Conceptual physics chapter15,16,17 questions
62) When condensation occurs inside your bedroom window, the air outside is appreciably A) colder. B) warmer. C) both of these D) neither of these
A) colder.
81) The minimum amount of steam at 100°C needed to melt 1 gram of 0°C ice is A) 0.125 gram. B) 0.148 gram. C) 6.75 grams. D) 8 grams. E) none of the above
A) 0.125 gram.
73) Which will melt more ice when placed on its surface, a kilogram of wood or a kilogram of iron of the same high temperature? A) 1 kg of wood. B) 1 kg of iron. C) both the same D) neither of these
A) 1 kg of wood.
6) Which temperature scale has the smallest sized degrees? A) Fahrenheit B) Celsius C) Kelvin D) none of the above
A) Fahrenheit
2) The molecules in a room-temperature glass of water jostle around at A) a great variety of speeds. B) much the same rates of speed. C) a very small range of speeds.
A) a great variety of speeds.
2) A good heat conductor is A) a poor insulator. B) a good insulator. C) neither of these
A) a poor insulator.
16) Evaporation is a cooling process and condensation is A) a warming process. B) a cooling process also. C) neither of these
A) a warming process.
37) Objects that radiate relatively well A) absorb radiation relatively well. B) reflect radiation relatively well. C) both of these D) neither of these
A) absorb radiation relatively well.
47) When a solid melts, energy is A) absorbed by the solid. B) released by the solid. C) both of these D) neither of these
A) absorbed by the solid.
51) When vapor transforms to a plasma, energy must be A) absorbed by the vapor. B) released from the vapor. C) both of these D) neither of these
A) absorbed by the vapor.
35) The pupil of your eye is a net A) absorber of radiant energy. B) emitter of radiant energy. C) reflector of radiant energy. D) none of the above
A) absorber of radiant energy.
41) A liter of hot water will cool to room temperature faster in a A) black pot. B) silver pot. C) red pot. D) none of the above
A) black pot.
42) A liter of cold water will warm faster in sunlight in a A) black pot. B) silver pot. C) red pot. D) none of the above
A) black pot.
49) Both black and white road surfaces absorb sunlight. The warmer road surface at the end of a sunny day is the A) black surface. B) white surface. C) neither of these
A) black surface.
52) A red-hot piece of coal will cool quicker in a A) cold room. B) warm over. C) both the same.
A) cold room.
64) In a heat pump, warming is accomplished when A) condensation occurs in its coils. B) vaporization occurs in its coils. C) both of these D) neither of these
A) condensation occurs in its coils.
12) If air were a better conductor, at nighttime Earth would be A) considerably colder. B) considerably warmer. C) not appreciably different in temperature.
A) considerably colder.
24) A region of expanding air tends to A) cool. B) warm. C) both of the these D) neither of these
A) cool.
64) If the composition of the upper atmosphere were altered to permit a greater amount of terrestrial radiation to escape, Earth would be A) cooler. B) warmer. C) quite unaffected. D) none of the above
A) cooler.
62) Open spaces in ice crystals contribute to A) decreased density. B) increased density. C) neither of these
A) decreased density.
39) If a pizza radiates more energy than it absorbs, its temperature A) decreases. B) is unaffected. C) increases. D) none of the above
A) decreases.
34) Terrestrial radiation is A) emitted by Earth. B) emitted by the Sun. C) both of these D) neither of these
A) emitted by Earth.
6) The surface of hot water has a relatively high rate of A) evaporation. B) condensation. C) conductivity. D) convection.
A) evaporation.
30) If you release a single molecule in an evacuated region it will initially A) fall just as a baseball would. B) move in any direction. C) convect upward. D) be buoyed upward. E) none of the above
A) fall just as a baseball would.
46) A good absorber of radiation is a A) good emitter of radiation. B) poor emitter of radiation. C) good reflector. D) none of the above
A) good emitter of radiation.
22) Food in a pressure cooker is cooked faster due to A) higher temperature. B) greater rate of bubble formation in the water. C) energy transfer in the water. D) all of the above E) none of the above
A) higher temperature.
53) An apple pie will be a net emitter of energy when its temperature is A) higher than its surroundings. B) lower than its surroundings. C) none of these
A) higher than its surroundings.
28) In a mixture of hydrogen gas, oxygen gas, and nitrogen gas, the molecules with the greatest average speed are those of A) hydrogen. B) oxygen. C) nitrogen. D) all the same
A) hydrogen.
38) The temperature at which water freezes is the same as the temperature at which A) ice melts. B) water boils in a pressure cooker. C) both of these D) neither of these
A) ice melts.
71) If the temperature of a sample of water at 4°C is slightly lowered, its volume A) increases. B) decreases. C) remains the same.
A) increases.
38) When an object absorbs as much as it radiates A) it remains at about the same temperature. B) it is a net absorber. C) it is a net radiator. D) none of the above
A) it remains at about the same temperature.
4) Temperature is most closely related to molecular A) kinetic energy. B) potential energy. C) electrical energy. D) mechanical energy in general.
A) kinetic energy.
48) If a poor absorber of radiation were a good emitter, its temperature would be A) less than its surroundings. B) more than its surroundings. C) the same as its surroundings
A) less than its surroundings.
40) Foreign ions introduced to water A) lower the freezing point of water. B) raise the freezing point of water. C) do not affect water's freezing point.
A) lower the freezing point of water.
44) If bits of the coals do not stick to your feet while walking barefoot on red-hot coals, it would be best if your feet are A) wet. B) dry. C) warm. D) cold. E) very hot.
A) wet
43) When you walk barefoot on red-hot wooden coals it is best if A) no pieces of metal are among the coals. B) you walk slowly to demonstrate your courage. C) you impress your friends by carrying away bits of wood between your toes. D) all of the above E) none of the above
A) no pieces of metal are among the coals.
28) Increased air pressure on the surface of hot water tends to A) prevent boiling. B) promote boiling. C) both of these D) neither of these
A) prevent boiling.
11) When fast-moving water molecules collide they tend to A) rebound without sticking. B) stick. C) both of these D) neither of these
A) rebound without sticking.
49) When a gas is changed to a liquid, the gas A) releases energy. B) absorbs energy. C) both of these D) neither of these
A) releases energy.
56) When you're ready for the hottest sips of coffee, add cream A) right away. B) at any time. C) when you are ready to drink the coffee.
A) right away.
55) It is commonly thought that a can of beverage will cool faster in the coldest part of a refrigerator. Knowledge of Newton's law of cooling A) supports this common knowledge. B) contradicts this common knowledge. C) is unrelated to this common knowledge.
A) supports this common knowledge.
79) Which involves a larger number of calories? A) the condensation of 1 gram of steam at 100°C to water at 100°C B) the cooling of 1 gram of water at 100 degrees Celsius to 1 gram of ice at absolute zero C) both the same D) none of these
A) the condensation of 1 gram of steam at 100°C to water at 100°C
58) Waves emitted by the Sun and terrestrial wave emissions are A) the same except for their frequencies and wavelengths. B) entirely different kinds of waves. C) identical.
A) the same except for their frequencies and wavelengths.
5) A hot dog pants A) to enable evaporation in its mouth and bronchial tract. B) to provide more oxygen into its lungs. C) to impress dogs of the opposite sex. D) none of the above
A) to enable evaporation in its mouth and bronchial tract.
20) On a muggy day, water molecules in the air that strike our bodies A) transfer some of their kinetic energy to us. B) gain kinetic energy as they change phase. C) form an insulating layer on our bodies.
A) transfer some of their kinetic energy to us.
27) At the same temperature, which has greater average speed in the air? A) very light molecules B) heavier molecules C) both have equal average speeds.
A) very light molecules
61) When water vapor condenses on the inside of a window, the room becomes slightly A) warmer. B) cooler. C) both of these D) neither of these
A) warmer.
59) When ice crystals form in clouds, the surrounding air A) warms. B) cools. C) neither of these
A) warms.
42) To illustrate regelation with ice it is important that a A) wire is used. B) string is used. C) either of these D) none of the above
A) wire is used.
18) Soaring birds and glider pilots can remain aloft for hours without expending power, due to A) conduction. B) convection. C) radiation. D) all of the above
B) convection.
17) A boy scout will be burned more severely by A) 100 g of water at 100°C. B) 100 g of steam at 100°C. C) both about equally D) neither of these
B) 100 g of steam at 100°C.
75) Before ice can form on a lake, all the water in the lake must be cooled to A) zero°C. B) 4°C. C) -32°C. D) none of the above
B) 4°C.
19) Which unit represents the most energy? A) calorie B) Calorie C) joule D) all the same
B) Calorie
63) Long ago a runaway greenhouse effect transformed the planet A) Mercury. B) Venus. C) Mars. D) all of the above
B) Venus.
61) If there were no greenhouse effect, Earth's average temperature would likely be A) near absolute zero. B) a frigid -18°C. C) comfortably cooler. D) warmer than now.
B) a frigid -18°C.
29) Compared to sea level, water in an open pot in the mountains boils at A) a higher temperature. B) a lower temperature. C) the same temperature. D) none of the above
B) a lower temperature.
44) The temperature of outer space is A) zero. B) about 2.7 kelvin. C) meaningless. D) none of the above
B) about 2.7 kelvin.
46) When a solid is changed to a liquid, the solid A) releases energy. B) absorbs energy. C) both of these D) neither of these
B) absorbs energy.
19) We feel uncomfortably warm on a muggy day because water molecules are A) evaporating from our moist bodies. B) condensing on our bodies. C) evaporating and condensing on our bodies at the same rate. D) none of the above
B) condensing on our bodies.
60) Melting snow tends to A) warm the surrounding air. B) cool the surrounding air. C) neither of these
B) cool the surrounding air.
20) If a volume of air is warmed, it expands and tends to A) warm. B) cool. C) neither of these
B) cool.
8) A canteen that is wet on the outside results in water inside that is A) warmer. B) cooler. C) both of these D) neither of these
B) cooler.
15) When a geyser erupts, pressure at its bottom A) increases. B) decreases C) is unaffected D) all of the above E) none of the above
B) decreases.
45) To melt ice, add A) temperature. B) energy. C) force. D) time
B) energy.
37) The addition of salt to water affects its A) crystal composition. B) freezing point. C) viscosity. D) liquidity. E) none of the above
B) freezing point.
6) On a cold day your feet feel warmer on a rug than on a tile floor because a rug A) is usually warmer than tile. B) is a poorer conductor. C) for the same mass has more internal energy than tile. D) all of the above E) none of the above
B) is a poorer conductor.
77) Stored potatoes, beets, and rutabagas in an unheated well-insulated room can be protected from freezing by having in the room A) blocks of foam plastic. B) large tubs of water. C) an ample supply of fire wood. D) none of the above
B) large tubs of water.
45) When we enlarge a photograph of an iron ring, the image of the hole becomes A) smaller. B) larger. C) neither smaller nor larger
B) larger.
54) A blueberry pie will be a net absorber of energy when its temperature is A) higher than its surroundings. B) lower than its surroundings. C) none of these
B) lower than its surroundings.
36) An inventor discovers a harmless and tasteless salt, which when added to water changes its boiling point. The market value for this salt will be better if the salt A) lowers the boiling point of water. B) raises the boiling point of water. C) either raises or lowers the boiling point, as the food would be cooked either way. D) none of the above
B) raises the boiling point of water.
23) Molecules in a region of expanding air more often collide with neighboring molecules that are A) approaching. B) receding. C) nearly out of range.
B) receding.
35) Water in a car radiator sometimes boils explosively when the radiator cap is removed, which is due to sudden A) rapid evaporation. B) reduced pressure. C) excess condensation. D) excess vaporization.
B) reduced pressure.
48) When liquids change to a solids, they A) absorb energy. B) release energy. C) both of these D) neither of these
B) release energy.
52) When moth balls sublime to gas they A) absorb energy. B) release energy. C) both of these D) neither of these
B) release energy.
50) When a vapor condenses, energy is A) absorbed by the vapor. B) released from the vapor. C) both of these D) neither of these
B) released from the vapor.
27) For increased atmospheric pressure, the boiling point of water A) goes down. B) rises. C) remains at 100 degrees C
B) rises.
66) Looking forward, common consensus will likely agree that the wisest use of fossil fuels is to A) convert them to heat and smoke. B) save them for tomorrow's materials. C) extract and sell them as quickly as possible. D) all of the above
B) save them for tomorrow's materials.
33) The higher the temperature of an object, the A) longer the wavelengths it radiates. B) shorter the wavelengths it radiates. C) makes no difference in the wavelengths it radiates
B) shorter the wavelengths it radiates.
12) When slow-moving water molecules collide they tend to A) rebound without sticking. B) stick. C) both of these D) neither of these
B) stick.
32) Sun's radiant energy is composed of shorter wavelengths than Earth's due to Sun's greater A) size. B) surface temperature. C) both of these D) neither of these
B) surface temperature.
42) In terms of thermal expansion it is important that A) a key and its lock are made of similar or the same material. B) the fillings in your teeth expand at the same rate as teeth. C) iron rods and concrete in which they're embedded expand equally. D) all of the above E) none of the above
B) the fillings in your teeth expand at the same rate as teeth.
82) Rapid evaporation of hot water can lead to A) superheated steam. B) the formation of ice. C) both of these D) neither of these
B) the formation of ice.
33) A good cook knows that the temperature of violently boiling water is A) higher than that of simmering water. B) the same as that of simmering water. C) actually lower than 100°C. D) neither of the above
B) the same as that of simmering water.
39) The temperature at which a liquid freezes is A) affected by foreign ions. B) the same temperature at which its solid form melts. C) both of these D) neither of these
B) the same temperature at which its solid form melts.
63) In a heat pump, cooling is accomplished when A) condensation occurs in its coils. B) vaporization occurs in its coils. C) both of these D) neither of these
B) vaporization occurs in its coils.
56) When water freezes, the surrounding air is A) cooled. B) warmed. C) both of these D) neither of these
B) warmed.
57) During snow fall, the surrounding air is A) cooled. B) warmed. C) both of these D) neither of these
B) warmed.
58) When steam condenses, the surrounding air is A) cooled. B) warmed. C) both of these D) neither of these
B) warmed.
72) When water vapor changes phase to become water in a cloud, the surroundings become A) cooler. B) warmer. C) both of these D) neither of these
B) warmer.
62) Which is the most abundant greenhouse gas in Earth's atmosphere? A) nitrogen. B) water vapor. C) carbon dioxide. D) none of the above
B) water vapor.
50) Both black and white road surfaces radiate energy. At midnight on a starry night the warmer road surface is the A) black surface. B) white surface. C) neither, as no noticeable difference.
B) white surface.
8) Room temperature on the Kelvin scale is about A) 100 K. B) 200 K. C) 300 K. D) 400 K. E) more than 400 K
C) 300 K.
17) The amount of heat needed to raise the temperature of 1 gram of water by 1°C is A) 4.19 calories. B) 4.19 Calories. C) 4.19 joules. D) none of the above
C) 4.19 joules.
78) The calories needed to change 10 grams of ice at 0°C to steam at 100°C is A) 6200. B) 6400. C) 7200. D) 8000.
C) 7200.
60) Glass in a florist's greenhouse acts as a one-way valve in that it A) lets light energy flow only in one direction. B) cuts off unwanted radiation. C) allows high-frequency waves in and blocks low-frequency waves exiting. D) is transparent only to lower-frequency waves.
C) allows high-frequency waves in and blocks low-frequency waves exiting.
29) If no molecular collisions occurred in a sample of gas, temperature of the gas would A) increase. B) decrease. C) be unaffected.
C) be unaffected.
5) Because of trapped air inside, snow is a A) good conductor. B) good insulator. C) both a good insulator and a poor conductor. D) none of the above
C) both a good insulator and a poor conductor.
61) When ice water at 0°C is heated A) thermal expansion occurs. B) thermal contraction occurs. C) both occur until 4°C is reached
C) both occur until 4°C is reached
10) The toy drinking bird nicely illustrates A) evaporation. B) condensation. C) both of these D) neither of these
C) both of these
16) Heat energy is measured in units of A) joules. B) calories. C) both of these D) neither of these
C) both of these
18) Steam burns are more damaging than burns caused by boiling water because steam A) has more energy per gram than boiling water. B) releases additional energy when it condenses. C) both of these D) neither of these
C) both of these
22) Blow on your hand with your mouth open. Then do the same with your lips puckered and you'll find A) a difference in temperatures. B) the breath from puckered lips is cooler. C) both of these D) neither of these
C) both of these
25) Steam that issues from a pressure cooker A) is invisible. B) cools as it expands. C) both of these D) neither of these
C) both of these
25) Water can be brought to a boil by A) applying heat. B) reducing air pressure on its surface. C) both of these D) neither of these
C) both of these
32) Water can be turned to ice by A) lowering the surrounding air pressure. B) extracting energy. C) both of these D) neither of these
C) both of these
36) The lower the temperature of an object, the A) lower the frequency of radiation it emits. B) longer the wavelengths it radiates. C) both of these D) neither of these
C) both of these
51) Newton's law of cooling applies to objects undergoing A) cooling. B) warming. C) both of these D) neither of these
C) both of these
53) You can add heat without raising temperature to A) ice. B) boiling water. C) both of these D) neither of these
C) both of these
7) What occurs in a pan of water placed outdoors on a warm day? A) evaporation B) condensation C) both of these D) neither of these
C) both of these
74) A heat pump can A) cool an environment. B) warm an environment. C) both of these D) neither of these
C) both of these
26) A parcel of warmed air rises due to A) random molecular motion. B) radiation. C) buoyancy. D) increased energy of its molecules
C) buoyancy.
30) A geyser such as Old Faithful in Yellowstone Park is similar to a A) vacuum bottle. B) canteen. C) coffee percolator. D) teakettle. E) vat of molten lead.
C) coffee percolator.
9) Double-pane windows contain nitrogen rather than air to prevent A) gas escape. B) thermal conduction. C) condensation. D) heat flow.
C) condensation.
4) When you blow over hot soup to cool it you are helping A) to slightly increase air pressure atop the soup surface. B) more energetic particles in the soup to escape. C) conduction, convection, and radiation. D) none of the above
C) conduction, convection, and radiation.
72) If you wish to expand the volume of a sample of water at 4°C A) raise its temperature a bit. B) lower its temperature a bit. C) either of these D) neither of these
C) either of these
1) Wrapping a hot potato in aluminum foil significantly reduces the rate at which it cools by A) conduction. B) condensation. C) evaporation. D) melting.
C) evaporation.
24) Compared with sea-level cooking, in cooking eggs by boiling in mountain regions you should boil the eggs A) with a hotter flame. B) for a shorter time. C) for a longer time. D) all of the above E) none of the above
C) for a longer time.
31) Hydrothermal vents deep beneath the ocean surface attain temperatures far above 100°C due to A) higher salt content. B) reduced salt content. C) greater pressure. D) all of the above E) none of the above
C) greater pressure.
14) The pressure at the bottom of a geyser is A) less than nearer the top. B) the same as nearer the top C) greater than nearer the top. D) all of the above E) none of the above
C) greater than nearer the top.
43) A bridge is more likely to be ice covered than the roadway on a cold day because A) a bridge is more conducting than ground. B) a bridge is more commonly wet than ground. C) heat upwelling from the ground below is absent on a bridge. D) none of the above
C) heat upwelling from the ground below is absent on a bridge.
40) If a pizza absorbs more energy than it emits, its temperature A) decreases. B) is unaffected. C) increases. D) none of the above
C) increases.
71) To turn 1 gram of boiling water to steam requires A) almost as much energy as changing 1 gram of 0°C water to the boiling point. B) as much as increasing 1 kilogram of 95°C water to the boiling point. C) more energy than needed to turn 1 gram of absolute-zero ice to the boiling point. D) none of the above
C) more energy than needed to turn 1 gram of absolute-zero ice to the boiling point.
41) Dean teaches that the phenomenon of regelation is due to the A) freezing point of water. B) melting point of ice. C) open-structured nature of ice crystals. D) high specific heat of water.
C) open-structured nature of ice crystals.
47) A good reflector of radiation is a A) good absorber of radiation. B) good emitter of radiation. C) poor absorber of radiation. D) none of the above
C) poor absorber of radiation.
31) The form of heat transfer that doesn't depend on a medium is A) conduction. B) convection. C) radiation. D) all of the above
C) radiation.
45) A photovoltaic cell receives energy input by A) conduction. B) convection. C) radiation. D) all of the above
C) radiation.
59) The planet Earth loses heat primarily by A) conduction. B) convection. C) radiation. D) all of the above
C) radiation.
26) When heat is added to boiling water, its temperature A) increases. B) decreases. C) remains unchanged. D) none of the above
C) remains unchanged.
25) A substance with a high thermal inertia has a high A) temperature, in many cases. B) heat conductivity. C) specific heat capacity. D) energy content.
C) specific heat capacity.
75) Firefighters find that the temperature of burning material is best lowered when water is A) used in small amounts. B) pointed away from the flames. C) sprayed as a fine mist. D) salted.
C) sprayed as a fine mist.
55) The most responsible factor for whether a substance takes the phase of solid, liquid, gas, or plasma is its A) composition. B) atomic shell configuration. C) temperature. D) none of the above
C) temperature.
3) The reason that evaporation is a cooling process is A) radiation of heat during the process. B) due to conduction and convection. C) the more energetic molecules escape the liquid. D) all of the above E) none of the above
C) the more energetic molecules escape the liquid.
76) Stored potatoes, beets, and rutabagas freeze at temperatures below zero degrees Celsius (rather than at exactly zero) because A) they are good radiators of energy. B) they are good absorbers of radiant energy. C) the water in them contains dissolved salts and sugars. D) they are relatively dense. E) all of the above
C) the water in them contains dissolved salts and sugars.
65) A refrigerator A) produces cold. B) causes internal energy to disappear. C) transfers internal energy from inside to outside. D) transfers heat into cold. E) none of the above
C) transfers internal energy from inside to outside.
66) The cooling effect inside a refrigerator is produced by A) an electric motor that converts electrical energy to internal energy. B) compressing the refrigeration gas. C) vaporizing the refrigeration liquid. D) proper insulation. E) exchanging warmer air with colder air.
C) vaporizing the refrigeration liquid.
54) As a block of ice at 0°C melts, the block absorbs energy A) and decreases in temperature. B) and increases in temperature. C) without a temperature change. D) all of the above E) none of the above
C) without a temperature change.
80) The mass of ice that can be melted by 1 gram of 100°C steam is (Hint: Don't forget about hot water remaining from condensed steam.)
D) 8 grams
10) Wood is a poor conductor A) when it is cold. B) at common room temperature. C) when it is hot. D) all of the above E) none of the above
D) all of the above
11) A bare roof on a warmly heated home on a snowy day indicates A) an unwanted flow of heat B) poor insulation. C) fairly good conductivity. D) all of the above
D) all of the above
20) White-hot sparks from a 4th-of-July-type sparkler that strike your skin have relatively A) high temperatures. B) few molecules per spark. C) low transfer of energy. D) all of the above E) none of the above
D) all of the above
57) Which body glows with electromagnetic waves? A) the Sun B) the Earth C) you and your classmates D) all of the above
D) all of the above
13) The main difference between a fog and a cloud is A) water vapor content. B) density of vapor. C) seeding. D) altitude. E) temperature.
D) altitude.
67) Ice is put in a cooler to cool the contents. To speed up the cooling process, the ice can be A) wrapped in newspaper. B) drained of water periodically. C) kept away from the food. D) broken into smaller pieces. E) none of the above
D) broken into smaller pieces.
70) To turn 50 grams of boiling water to steam requires A) 50 calories. B) 500 calories C) 540 calories. D) more than 540 calories. E) none of the above
D) more than 540 calories.
23) In mountain regions, food cooked in boiling water cooks slower than when cooked at sea level. If the temperature beneath the pot of boiling water is increased, the food will cook A) faster. B) slower still. C) both of these D) neither of these
D) neither of these
69) To melt 50 grams of 0-degree-Celsius ice requires A) 25 calories. B) 50 calories. C) 80 calories. D) none of the above
D) none of the above
34) In one word, how can water in the power plant of a nuclear submarine far exceed 100°C? A) conductivity B) evaporation C) condensation D) pressure E) vaporization
D) pressure
21) Morning dew on the grass is a result of A) evaporation of water. B) the open-structured form of water crystals. C) air pressure on water vapor. D) slow-moving water molecules sticking to one another.
D) slow-moving water molecules sticking to one another.
68) To increase the temperature of 50 grams of water by 2 Celsius degrees requires A) 0.04 calorie. B) 2 calories. C) 4.19 calories. D) 25 calories. E) 100 calories
E) 100 calories
65) Every equation in physics reminds us of a lesson: we can never change only one thing. When we change the composition of the atmosphere we likely also change A) its transparency. B) its reflectivity. C) its average temperature. D) Earth's climate. E) all of the above
E) all of the above
3) Which of these are good conductors? A) feathers. B) wood. C) snow. D) all the above E) none of the above
E) none of the above
58) If you measure the distance between two telephone poles with a steel tape on a very hot day, your measured distance will be A) a bit short. B) a bit long. C) the same as on an average-temperature day
A) a bit short
14) If you were caught in freezing weather with only a candle for heat, you would be warmer in A) an igloo. B) a tent. C) a wooden house. D) a car.
A) an igloo.
35) Aluminum has a specific heat capacity more than twice that of copper. Place equal masses of aluminum and copper wire in a flame and the one to undergo the fastest increase in temperature will be A) copper. B) aluminum. C) both the same
A) copper.
74) Consider some water at 6°C. For a slight increase its temperature the water will A) expand. B) contract. C) remain the same.
A) expand.
12) When you touch a cold piece of ice with your finger, energy flows A) from your finger to the ice. B) from the ice to your finger C) actually, both ways
A) from your finger to the ice
51) The fact that gasoline overflows a full tank on a hot day is evidence that A) gasoline expands more with increasing temperature than its tank. B) the tank contracts while gasoline expands with temperature. C) both of these D) neither of these
A) gasoline expands more with increasing temperature than its tank.
33) A substance that heats up relatively slowly has a A) high specific heat capacity. B) low specific heat capacity. C) either of these D) neither of these
A) high specific heat capacity.
21) When a volume of air is compressed, air temperature A) increases. B) decreases. C) neither of these
A) increases.
56) If glass expanded more than mercury, then the column of mercury in a mercury thermometer would fall when the temperature A) increases. B) decreases. C) neither of these
A) increases.
70) If the temperature of a sample of water at 4°C is slightly increased, its volume A) increases. B) decreases. C) remains the same.
A) increases.
24) Place a 1-kilogram block of iron at 40°C into 1 kilogram of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
A) less than 30°C.
21) The white-hot sparks from a 4th-of-July-type sparkler that strike your skin transfer A) little energy to you in spite of their high temperature. B) little energy to you due to their low temperature. C) much energy, but at a low temperature. D) none of the above
A) little energy to you in spite of their high temperature.
37) One of water's interesting thermal properties is that when heated it takes a relatively A) long time in changing temperature. B) short time in changing temperature. C) same amount of time to cool. D) none of the above
A) long time in changing temperature.
32) A substance that cools down faster than others has a A) low specific heat capacity. B) high specific heat capacity. C) either of these D) neither of these
A) low specific heat capacity.
36) The fact that desert sand is very hot in the day and very cold at night is evidence that the specific heat capacity of sand is relatively A) low. B) high. C) practically absent.
A) low.
63) Due to the presence of ice crystals in nearly frozen liquid water, the density of water is A) lower. B) unaffected. C) higher.
A) lower.
64) Microscopic slush in ice water tends to make water density A) lower. B) higher. C) sustain at one value
A) lower.
41) If the specific heat of water were lower than it is, ponds in the cold of winter would be A) more likely to freeze. B) less likely to freeze. C) neither more nor less likely to freeze.
A) more likely to freeze.
39) If the specific heat capacity of water were lower than it is, a nice hot bath would be a A) shorter experience. B) longer experience. C) same regardless of water's specific heat capacity
A) shorter experience.
40) If the specific heat capacity of water were lower than it is, a watermelon in a picnic cooler would cool in a A) shorter time. B) longer time. C) the same time anyway.
A) shorter time.
28) The specific heat capacity is highest for substances that absorb or release large quantities of heat for correspondingly A) small temperature changes. B) large temperature changes. C) small or large changes in temperature. D) none of the above
A) small temperature changes.
66) Ice tends to form first at the A) surface of bodies of water. B) bottom of bodies of water. C) either depending on water depth.
A) surface of bodies of water.
59) A body of water will be deeper when its A) temperature rises. B) temperature drops. C) neither of these
A) temperature rises.
9) The fact that a thermometer "takes its own temperature" illustrates A) thermal equilibrium. B) energy conservation. C) the difference between heat and internal energy. D) the fact that molecules are constantly moving.
A) thermal equilibrium.
The kind of molecular motion that mostly relates to the temperature of a substance is A) translational motion. B) rotational motion. C) vibrational motion. D) all about equally
A) translational motion.
78) The temperature at the bottom of Lake Tahoe, high in the Sierra Nevada Mountains in California, at this moment is A) below 4°C. B) 4°C. C) above 4°C. D) uncertain.
B) 4°C.
7) A temperature difference of 10 Celsius degrees is also equal to a temperature difference of 10 on the A) Fahrenheit scale. B) Kelvin scale. C) both of these D) neither of these
B) Kelvin scale.
57) If you measure the width of an outdoor barn with a steel tape on a very cold day, your measured width will be A) a bit short. B) a bit long. C) the same as on an average-temperature day.
B) a bit long
The air in your room is composed of molecules that have A) nearly identical speeds. B) a wide variety of speeds. C) no speeds worth mentioning.
B) a wide variety of speeds.
73) When water at 4°C is heated it expands. If it is instead cooled it will A) contracts. B) also expand. C) neither contracts nor expands
B) also expand.
22) Pour a liter of water at 40°C into a liter of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
B) at or about 30°C.
48) Consider a metal ring with a gap cut in it. When the ring is heated, the gap A) becomes narrower. B) becomes wider. C) retains its size.
B) becomes wider.
15) In terms of transferring heat, red-hot wooden coals A) conduct quite well. B) conduct poorly. C) radiate poorly. D) convect poorly.
B) conduct poorly.
19) You can safely hold your fingers on both sides of a candle flame due mainly to A) conduction. B) convection. C) radiation. D) none of the above
B) convection.
47) As a piece of metal with a hole in it cools, the diameter of the hole A) increases. B) decreases. C) remains the same.
B) decreases.
69) If the temperature of a sample of water at 0°C is slightly increased, its volume A) increases. B) decreases. C) remains the same.
B) decreases.
76) When the temperature of a solid block of ice is lowered, its volume A) increases. B) decreases. C) stays the same
B) decreases.
50) It is important that the two metals that compose a bimetallic strip have A) different conductivities. B) different rates of expansion. C) equal thicknesses. D) all of the above E) none of the above
B) different rates of expansion.
44) When most substances are heated, molecules inside move faster and take up more space, resulting in thermal A) bending. B) expansion. C) contraction. D) heat
B) expansion.
11) Internal energy is greater in a A) cup of boiling-hot tea. B) fire-engine pail of boiling-hot tea. C) both the same
B) fire-engine pail of boiling-hot tea.
13) When you touch a hot potato with your finger, energy flows A) from your finger to the potato. B) from the potato to your finger. C) actually, both ways.
B) from the potato to your finger.
27) Materials composed of molecules that absorb large amounts of energy in the form of internal vibrations and rotations have A) low specific heats. B) high specific heats. C) none of the above
B) high specific heats.
14) Compared to a giant iceberg, a hot cup of coffee has A) more internal energy and higher temperature. B) higher temperature, but less internal energy. C) a greater specific heat and more internal energy. D) none of the above
B) higher temperature, but less internal energy.
31) Which of the following normally warms up fastest when heat is applied? A) water B) iron C) glass D) wood E) all of the above
B) iron
29) Aluminum has a higher specific heat capacity than iron. This means that for equal masses of aluminum and iron, the metal that heats more quickly when the same amount of heat is applied is A) aluminum. B) iron. C) need more information
B) iron.
46) When an iron ring is heated, the hole becomes A) smaller. B) larger. C) neither smaller nor larger. D) either smaller or larger, depending on the ring thickness
B) larger.
1) Metals are good conductors of both heat and electricity due to A) similar thermal and electrical conductive properties. B) looseness of outer electrons in metal atoms. C) relatively high densities of metals. D) high elasticity of metals. E) both transferring energy easily.
B) looseness of outer electrons in metal atoms.
16) The reason you can walk barefoot on red-hot coals of wood without burning your feet mainly involves A) low temperature of the coals. B) low conductivity of the coals. C) mind over matter techniques.
B) low conductivity of the coals.
34) A substance that heats up relatively quickly has a A) high specific heat capacity. B) low specific heat capacity. C) either of these D) neither of these
B) low specific heat capacity.
8) In practice, a good insulator A) stops heat flow. B) slows heat flow. C) speeds negative heat flow. D) all of the above
B) slows heat flow.
15) Heat energy travels from an object with a high A) internal energy to an object with a lower internal energy. B) temperature to an object with a lower temperature. C) both of the above D) none of the above
B) temperature to an object with a lower temperature.
43) A closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in A) mass. B) temperature. C) both of these D) neither of these
B) temperature.
30) Tomatoes have a higher specific heat capacity than dough. This means that when you bite into a hot pizza A) the dough feels hotter than the tomato sauce. B) the tomato sauce feels hotter than the dough. C) since sauce and dough are at the same temperature, neither feels hotter.
B) the tomato sauce feels hotter than the dough.
79) When ice floats in water, a small part of it extends above the surface. Interestingly, the volume of ice that extends above the surface is equal to the volume of the A) water the ice displaces. B) vast number of open spaces in all the hexagonal ice crystals. C) both of these D) neither of these
B) vast number of open spaces in all the hexagonal ice crystals.
77) During a very cold winter, water pipes sometimes burst due to A) the ground contracting when colder. B) water expanding when freezing. C) water contracting when freezing. D) thawing producing pressure on the pipes. E) none of the above
B) water expanding when freezing.
9) When you touch a nail stuck in ice, energy flows from A) the ice to your hand. B) your hand to the ice. C) both of these D) neither of these
B) your hand to the ice.
7) A block of wood and a block of copper will feel neither hot nor cold to the touch when they each have A) equal temperatures. B) your temperature. C) equal conductivities. D) none of the above
B) your temperature.
18) When 10 grams of hot water cool by 1°C, the amount of heat given off is A) 41.9 calories. B) 41.9 Calories. C) 41.9 joules. D) more than 41.9 joules. E) none of the above
C) 41.9 joules.
5) Which temperature scales have equal sized degrees? A) Fahrenheit and Celsius B) Fahrenheit and Kelvin C) Celsius and Kelvin D) none of the above
C) Celsius and Kelvin
60) Which of these is correct? A) a piece of solid iron floats in molten iron. B) a piece of solid aluminum floats in molten aluminum. C) a piece of ice floats in water. D) all the above E) none of the above
C) a piece of ice floats in water.
3) Translational motion is characterized by A) motion that carries a molecule from one place to another. B) the motion used in measuring temperature. C) both of these D) neither of these
C) both of these
67) Ice crystals in nearly frozen liquid water make up a A) microscopic slush. B) region of lower density. C) both of these D) neither of these
C) both of these
68) When ice crystals collapse at the surface of ice, the result is a A) thin film of water. B) slippery surface. C) both of these. D) none of the above
C) both of these.
10) In which is the temperature greater? A) boiling-hot tea in a cup B) boiling-hot tea in a fire-engine pail C) both the same
C) both the same
49) When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is A) iron gets hotter before copper. B) copper gets hotter before iron. C) copper expands more than iron. D) iron expands more than copper. E) none of the above
C) copper expands more than iron.
52) In most cases, which expands more for comparable changes in temperature? A) solids. B) liquids. C) gases. D) all expand about equally.
C) gases.
38) The moderate temperatures of islands throughout the world has much to do with water's A) good conductivity. B) vast supply of internal energy. C) high specific heat capacity. D) high evaporation rate. E) absorption of solar energy.
C) high specific heat capacity.
55) Which of these expands when the temperature is lowered? A) iron B) wood C) ice water D) helium E) none of the above
C) ice water
65) Ice has a lower density than water because ice A) molecules are more compact in the solid state. B) molecules vibrate at lower rates than water molecules. C) is composed of open-structured crystals. D) density decreases with decreasing temperature
C) is composed of open-structured crystals.
23) Pour two liters of water at 40°C into one liter of water at 20°C and the final temperature of the two becomes A) less than 30°C. B) at or about 30°C. C) more than 30°C.
C) more than 30°C.
26) The quantity of heat that a substance can transfer relates to its A) mass B) specific heat capacity C) change in its temperature. D) all of the above
D) all of the above
4) Which of these are good insulators? A) feathers. B) wood. C) snow. D) all the above E) none of the above
D) all the above
17) Energy transfer by convection is primarily restricted to A) solids. B) liquids. C) gases. D) fluids. E) none of the above
D) fluids.
53) Which of the following expands more when the temperature is increased? Equal volumes of A) iron. B) wood. C) ice water. D) helium. E) all expand the same.
D) helium.
54) Which of the following contracts most when the temperature is decreased? Equal volumes of A) iron. B) wood. C) water. D) helium. E) all contract the same.
D) helium.
13) A water-filled paper cup held in a flame will not catch fire. This is because A) the inside of the paper is wet. B) water is an excellent conductor of heat. C) paper is a poor conductor of heat. D) the paper cup cannot become appreciably hotter than the water it contains.
D) the paper cup cannot become appreciably hotter than the water it contains.