Thermal Energy Transfer Concepts

What is the direction of thermal energy flow?

• It does not flow

• From cold to hot regions

• From hot to cold regions

• In a circular motion

How does thermal conduction occur in solids?

• Through particle vibrations

• By changing the color of the solid

• By the bulk movement of matter

• Through the movement of particles

Why is thermal conduction less efficient in liquids and gases?

• Particles can move around each other

• Particles are very large

• Particles are in fixed positions

• Particles are tightly packed

What makes metals good conductors of thermal energy?

• They have a shiny surface

• They contain free electrons

• They are very heavy

• They are colorful

Which of the following is an example of a thermal insulator?

• Diamond

• Copper

• Metal

• Plastic