PHY 103 - Temperature and Heat

A temperature difference of 10 Celsius degrees is also equal to a temperature difference of 10 on the: a) Kelvin scale b) Fahrenheit scale c) both of these d) neither of these

a) Kelvin scale

The air in your room is composed of molecules that have: a) a wide variety of speeds b) no speeds worth mentioning c) nearly identical speeds

a) a wide variety of speeds

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

Compared to a giant iceberg, a hot cup of coffee has: a) higher temperature, but less internal energy b) more internal energy and higher temperature c) a greater specific heat and more internal energy d) none of the above

a) higher temperature, but less internal energy

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) iron b) aluminum c) need more information

a) iron

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

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) much energy, but at a low temperature c) little energy to you due to their low temperature d) none of the above

a) little energy to you in spite of their high temperature

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

A substance that heats up relatively quickly 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

If the specific heat of water were lower than it is, ponds in the cold winter would be: a) more likely to freeze b) neither more nor less likely to freeze c) less likely to freeze

a) more likely to freeze

Room temperature on the Kelvin scale is about: a) 200 K b) 300 K c) more than 400 K d) 400 K e) 100 K

b) 300 K

Which temperature scales have equal sized degrees? a) Fahrenheit and Celsius b) Celsius and Kelvin c) Fahrenheit and Kelvin d) none of the above

b) Celsius and Kelvin

Which temperature scale has the smallest sized degrees? a) Kelvin b) Fahrenheit c) Celsius d) none of the above

b) Fahrenheit

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

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) aluminum b) copper c) both the same

b) copper

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

A substance that heats up relatively slowly has a: a) low specific heat capacity b) high specific heat capacity c) either of these d) neither of these

b) high specific heat capacity

The moderate temperatures of islands throughout the world has much to do with water's: a) absorption of solar energy b) high specific heat capacity c) vast supply of internal energy d) high evaporation rate e) good conductivity

b) high specific heat capacity

One of water's interesting thermal properties is that when heated it takes a relatively: a) same amount of time to cool b) long time in changing temperature c) short time in changing temperature d) none of the above

b) long time in changing temperature

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) practically absent b) low c) high

b) low

If the specific heat capacity of water were lower than it is, a watermelon in a picnic cooler would cool in a: a) the same time anyway b) shorter time c) longer time

b) shorter time

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

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

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

Heat energy is measured in units of: a) calories b) joules c) both of these d) neither of these

c) both of these

In which is the temperature greater? a) boiling-hot tea in a fire-engine pail b) boiling-hot tea in a cup c) both the same

c) both the same

Which unit represents the most energy? a) Calorie b) joule c) calorie d) all the same

c) calorie

Temperature is most closely related to molecular: a) potential energy b) electrical energy c) kinetic energy d) mechanical energy in general

c) kinetic energy

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

If the specific heat capacity of water were lower than it is, a nice hot bath would be a: a) longer experience b) same regardless of water's specific heat capacity c) shorter experience

c) shorter experience

The specific heat capacity is highest for substances that absorb or release large quantities of heat for correspondingly: a) small or large changes in temperature b) large temperature changes c) small temperature changes d) none of the above

c) small temperature changes

When 10 grams of hot water cool by 1°C, the amount of heat given off is: a) 41.9 calories b) more than 41.9 joules c) 41.9 Calories d) 41.9 joules e) none of the above

d) 41.9 joules

The quantity of heat that a substance can transfer relates to its: a) change in its temperature b) mass c) specific heat capacity d) all of the above

d) all of the above

Which of the following normally warms up fastest when heat is applied? a) water b) glass c) wood d) iron e) all of the above

d) iron

The fact that a thermometer "takes its own temperature" illustrates: a) energy conservation b) the fact that molecules are constantly moving c) the difference between heat and internal energy d) thermal equilibrium

d) thermal equilibrium