Exam 9: Heat Transfer and Change of Phase

An object will normally be a net radiator of energy when its internal energy is

If air were a better conductor than it is, at nighttime the Earth would be

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

Hydrogen and oxygen molecules in a gas sample have the same temperature. This means the hydrogen molecules, on the average, have the same

Water will evaporate quicker if it

For increased atmospheric pressure, the boiling temperature of a liquid

When a solid is changed to a liquid state, the solid

Wrapping a hot potato in aluminum foil significantly reduces the rate at which it loses energy by

Substances absorb heat energy by the process of

A substance can be sprayed on crops to prevent frost formation under many conditions. If frost did not form on the fields and woods of an entire continent, cold nights would be

When liquids change to a solid state, they

Both black and white road surfaces absorb sunlight. At the end of a sunny day the warmer road surface will be

Near the top of a mountain, water in an open pot boils at

A Thermos bottle has double glass walls with silver coating on the glass surfaces that face one another. The silver coating reduces the energy that is transferred by

We feel uncomfortably warm on a muggy day because water molecules are

Suppose you are served coffee at a restaurant before you are ready to drink it. In order for it to be the hottest when you are ready for it, you should add cream

Ice is put in a cooler to cool the contents. To speed up the cooling process, the ice can be

Your feet feel warmer on a rug than on your tile floor because your rug

Which could burn a boy scout the most?

If you double the pressure of an ideal gas while keeping the temperature constant, the average kinetic energy of the molecules