Conduction Convection Radiation

Question 1

Where does heat energy ten to flow away from?

Answer 1

from hotter objects to cooler surrounding

Question 2

What 3 ways is heat transferred?

Answer 2

Radiation
Conduction
Convection

Question 3

What is heat radiation?

Answer 3

the transfer of heat energy by Infrared radiation

Question 4

Which 2 ways involve the transfer of energy by particles?

Answer 4

Conduction

Convection

Question 5

What is the main form of heat transfer in solids?

Answer 5

Conduction

Question 6

What is the main form of heat transfer in liquids and gases?

Answer 6

Convection

Question 7

Infrared radiation can be emitted by___ ___ ___

Answer 7

Solids
Liquids
Gases

Question 8

An object can both ___ and ___ infrared radiation

Answer 8

Absorb

Emit

Question 9

The bigger the temperature difference between a body and its surroundings the ___

Answer 9

Faster energy is transferred by heating

Question 10

When you heat a substance you give particles more___

Answer 10

Kinetic energy

Question 11

What is conduction of heat energy?

Answer 11

Vibrating particles pass energy to others transferring heat

Question 12

Why do metals conduct so well?

Answer 12

Free electrons

Question 13

What is convection?

Answer 13

Energetic particles move from the hotter regions to the cooler ones and take their heat energy with them

Question 14

What are convection currents?

Answer 14

Changes in density

Question 15

Steps in a convection current?

Answer 15

Particles spread and water/air expands
hot water/air rises because less dense
fast particles collide with slow transferring heat
cool water/air falls because now more dense