HW-15

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 these

B. 4°C.

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.

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.

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 these

A. little energy to you in spite of their high temperature.

Due to the presence of ice crystals in nearly frozen liquid water, the density of water is A. lower. B. higher. C. unaffected.

A. lower.

A substance with a high thermal inertia has a high A. specific heat capacity. B. energy content. C. temperature, in many cases. D. heat conductivity.

A. specific heat capacity.

A body of water will be deeper when its A. temperature rises. B. temperature drops. C. neither of these

A. temperature rises.

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 these

B. 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. aluminum. B. iron. C. need more information

B. iron.

The moderate temperatures of islands throughout the world has much to do with water's A. good conductivity. B. high evaporation rate. C. vast supply of internal energy. D. high specific heat capacity. E. absorption of solar energy.

D. high specific heat capacity.