Heat Transfer

Front

After cooking an egg in boiling water, you cool the egg by putting it into a bowl of cold water. Which of the following explains the egg's cooling process?

Back

Energy is transferred from the egg to the water.

Front

Why do we wear sweaters in cold weather?

Back

To reduce heat loss.

Front

You pick up a can of soda off of the countertop. The countertop underneath the can feels colder than the rest of the counter. Which explanation do you think is the best?

Back

Some heat has been transferred from the counter to the soda.

Front

If you put a metal spoon and a wooden spoon into a pot of boiling water, one will become too hot to touch. Why?

Back

Metals conduct heat better than wood.

Front

Why might a metal coat hanger get too hot when held in a camp fire to roast a marshmallow?

Back

Metal atoms vibrate with more energy when they get hot, and they collide with atoms near them, which makes the neighboring atoms vibrate, too.

Front

An aluminum plate and a plastic plate have been in the freezer all night long. When you remove them the next morning, what can be said about their temperatures?

Back

the plates have the same temperature.

Front

When placed in direct sunlight, which object will absorb the most radiation? A black sweater, A white sweater, A snowball, Aluminum foil

Back

A black sweater

Front

As water in a freezer turns into ice, what happens to the heat?

Back

the freezer air absorbs heat from the water.

Front

In how many ways does heat move around the universe?

Back

Three

Front

Hot air moving up is an example of

Back

Convection