Thermal Energy

A jacket is an example of a conductor.

• True

• False

Solid particles remain completely still.

• True

• False

Conduction, convection, and radiation are three ways for heat energy to transfer from one substance to another.

• True

• False

Solid, liquid, and gas particles move differently.

• True

• False

What is the most likely meaning of the word fixed in the following sentence? The particles in a solid are pushing and pulling, or vibrating, even though they cannot move from their fixed position.

• repaired

• firm and not readily movable

• flexible

• improved

What would be the antonym for the word vacated in the following sentence? When the warm air rises, the cooler air flows in to fill the vacated space.

• occupied

• emptied

• traveled

• deserted

Which gas particles have a greater density?

• hot

• warm

• cool

Pretend you are packing for a camping trip. The weather is predicted to be cold. What type of insulators or conductors should you pack?

• cooler, sleeping bag, shovel, and gloves

• jacket, spoons, hot chocolate, and thermos

• jacket, gloves, sleeping bag, and skillet

• potholder, gloves, jacket, cooler

Lighting a wick of a candle causes the wax to melt slowly. Which choice best describes how the particles in the wax change as it begins to melt?

• speeding up and moving freely

• moving faster and flowing

• fixed and vibrating

• pushing and pulling