Chapter 15 Physics
Translational motion is characterized by motion that carries a molecule from one place to another. the motion used in measuring temperature. both of these neither of these
both of these
Internal energy is greater in a cup of boiling-hot tea. fire-engine pail of boiling-hot tea. both the same
fire-engine pail of boiling hot tea
When you touch a hot potato with your finger, energy flows from your finger to the potato. from the potato to your finger. actually, both ways.
form the potato to your finger
The fact that gasoline overflows a full tank on a hot day is evidence that the tank contracts while gasoline expands with temperature. gasoline expands more with increasing temperature than its tank. both of these neither of these
gasoline expands more with increasing temperature than its tank
Which of the following expands more when the temperature is increased? Equal volumes of ice water. iron. wood. helium. all expand the same.
helium
A substance that heats up relatively slowly has a low specific heat capacity. high specific heat capacity. either of these neither of these
high specific heat capacity
Materials composed of molecules that absorb large amounts of energy in the form of internal vibrations and rotations have low specific heats. high specific heats. none of the above
high specific heats
Which of these expands when the temperature is lowered? iron helium ice water wood none of the above
icewater
If the temperature of a sample of water at 4°C is slightly lowered, its volume increases. remains the same. decreases.
increases
Pour two liters of water at 40°C into one liter of water at 20°C and the final temperature of the two becomes less than 30°C. at or about 30°C. more than 30°C.
more than 30C
When ice water at 0°C is heated thermal expansion occurs. thermal contraction occurs. both occur until 4°C is reached
both occur until 4C is reached
Ice crystals in nearly frozen liquid water make up a region of lower density. microscopic slush. both of these neither of these
both of these
If the specific heat of water were lower than it is, ponds in the cold of winter would be neither more nor less likely to freeze. less likely to freeze. more likely to freeze.
more likely to freeze
The amount of heat needed to raise the temperature of 1 gram of water by 1°C is 4.19 joules. 4.19 calories. 4.19 Calories. none of the above
4.19 joules
Before ice can form on a lake, all the water in the lake must be cooled to zero°C. -32°C. 4°C. none of the above
4C
Which unit represents the most energy? Calorie joule calorie all the same
Calories
Which temperature scales have equal sized degrees? Celsius and Kelvin Fahrenheit and Kelvin Fahrenheit and Celsius none of the above
Celsius and Kelvin
A temperature difference of 10 Celsius degrees is also equal to a temperature difference of 10 on the Kelvin scale. Fahrenheit scale. both of these neither of these
Kelvin scale
If you measure the width of an outdoor barn with a steel tape on a very cold day, your measured width will be a bit long. a bit short.
a bit long
The air in your room is composed of molecules that have nearly identical speeds. no speeds worth mentioning. a wide variety of speeds.
a wide variety of speeds
When water at 4°C is heated it expands. If it is instead cooled it will also expand. contracts. neither contracts nor expands.
also expands
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 aluminum. copper. both the same
copper
When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. The reason for this is iron expands more than copper. copper gets hotter before iron. iron gets hotter before copper. copper expands more than iron. none of the above
copper expands more than iron
As a piece of metal with a hole in it cools, the diameter of the hole remains the same. decreases. increases.
decreases
If the temperature of a sample of water at 0°C is slightly increased, its volume remains the same. increases. decreases.
decreases
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 aluminum. iron. need more information
iron
Which of the following normally warms up fastest when heat is applied? glass water iron wood all of the above
iron
ice has a lower density than water because ice molecules vibrate at lower rates than water molecules. molecules are more compact in the solid state. density decreases with decreasing temperature. is composed of open-structured crystals.
is composed of open structure crystals
When we enlarge a photograph of an iron ring, the image of the hole becomes smaller. larger. neither smaller nor larger.
larger
The white-hot sparks from a 4th-of-July-type sparkler that strike your skin transfer much energy, but at a low temperature. little energy to you due to their low temperature. little energy to you in spite of their high temperature. none of the above
little energy to you in spite of their high temperature
One of water's interesting thermal properties is that when heated it takes a relatively same amount of time to cool. long time in changing temperature. short time in changing temperature. none of the above
long time in changing temperature
Due to the presence of ice crystals in nearly frozen liquid water, the density of water is lower. higher. unaffected.
lower
If the specific heat capacity of water were lower than it is, a nice hot bath would be a longer experience. shorter experience. same regardless of water's specific heat capacity.
shorter experience
A substance with a high thermal inertia has a high energy content. heat conductivity. specific heat capacity. temperature, in many cases.
specific heat capacity
A closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in temperature. mass. both of these neither of these
temperature
A body of water will be deeper when its temperature rises. temperature drops. neither of these
temperature rises
Heat energy travels from an object with a high temperature to an object with a lower temperature. internal energy to an object with a lower internal energy. both of the above none of the above
temperature to an object with a lower temperature
The fact that a thermometer "takes its own temperature" illustrates the difference between heat and internal energy. thermal equilibrium. the fact that molecules are constantly moving. energy conservation.
thermal equilibrium
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 water the ice displaces. vast number of open spaces in all the hexagonal ice crystals. both of these neither of these
vast number of open spaces in all hexagonal ice crystals
During a very cold winter, water pipes sometimes burst due to water contracting when freezing. water expanding when freezing. thawing producing pressure on the pipes. the ground contracting when colder. none of the above
water expanding when freezing