unit 3 topic 6

Question 1

Radiation

Answer 1

this is a form of energy transfer

Question 2

thermal conduction

Answer 2

is the process of transferring thermal energy through direct collisions between particles

Question 3

What does EMR stand for?

Answer 3

electromagnetic radiation

Question 4

What three characteristics do radiant energies have?

Answer 4

• They behave like waves.
• They can be absorbed and reflected by objects.
• They travel across empty space at the same very high speed:
300 000 km/s.

Question 5

List five features of all energy transfer systems.

Answer 5

Energy Source
Transformations
Waste Heat
Control Systems

Question 6

Give an example of a heat insulator.

Answer 6

Wood is an example of a heat conductor

Question 7

Thermal

conduction

Answer 7

The energy generated by the movement or vibration of particles

Question 8

convection

Answer 8

the warm fluid,

itself, moves from place to place, carrying the thermal energy with it.

Question 9

Thermal energy can be transferred in

Answer 9

a third way by fluids: materials

that can be poured or that flow from place to place.