Thermal Energy and Particle Motion Flashcard

Front

What is the process called when heat is transferred directly through a material?

Back

Conduction

Front

Which of the following is an example of a wave being absorbed by a material?

• Light passing through a window
• Sound echoing off a wall
• Sunlight warming a black t-shirt

Back

Sunlight warming a black t-shirt

Front

What happens to the particles of a substance when thermal energy is removed?

Back

They move slower

Front

Motion of particles in a solid:

Back

They vibrate in place

Front

A hot metal spoon is placed in a cup of cold water. What type of heat transfer occurs?

Back

Conduction

Front

Which material would best transmit sound waves? Options: Air, Water, Steel

Back

Steel

Front

What happens to the temperature of a substance when its particles move faster?

Back

The temperature increases

Front

Which of the following is an example of convection?

Heat from a lamp warming a room

,

Boiling water circulating in a pot

,

A metal rod heating up from one end to the other

Back

Boiling water circulating in a pot

Front

How does the density of a substance change when it is heated?

Back

It becomes less dense

Front

How do waves behave when they hit a smooth surface?

Back

They are reflected