Thermal Energy

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 is the best? Options: The cold has been transferred from the soda to the counter, There is no heat energy left in the counter beneath the can, Some heat has been transferred from the counter to the soda, The heat beneath the can moves away into other parts of the countertop.

Back

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

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

Why don’t Amy's dolls warm up when wrapped in blankets? Options: a. The blankets she uses are probably poor insulators. b. The blankets she uses are probably poor conductors. c. The dolls are made of materials that don’t hold heat well. d. None of the above.

Back

None of the above.

Front

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

Back

The freezer air absorbs heat from the water.

Front

On a warm sunny day, you will feel cooler wearing light colored clothes because they

Back

reflect more radiation.

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 are upstairs rooms usually hotter than downstairs rooms on a sunny day?

Back

Warm air rises and cool air sinks.

Front

Which material will work best to keep a can of soda cold and why? Options: a. Aluminum foil, b. Paper towel, c. Wax paper, d. Wool sweater

Back

Wool sweater because wool traps air.

Front

Why might a metal coat hanger get too hot to hold when used in a campfire 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.