Thermal transfers

Question 1

What are the three ways energy tries to travel from a high temperature to low temperature?

Answer 1

It is by conduction, convection and radiation.

Question 2

Explain what is Conduction

Answer 2

Conduction is when the particles in a solid vibrate and hit the particles next to them. Vibrations are bigger the hotter they are. They only happen in solids.

Question 3

Explain what is Convection

Answer 3

Convection is when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy.

Question 4

Explain what is Radiation (thermal)

Answer 4

Radiation is when heat is transferred from an object.

Question 5

Which surface absorbs and emits the most thermal radiation?

Answer 5

black/matte surfaces

Question 6

Which surface absorbs and emits the least thermal radiation?

Answer 6

white surfaces

Question 7

Finish the sentence: Different surfaces and colours absorb and emit ________ amounts of thermal radiation

Answer 7

different

Question 8

which surface reflects the most thermal energy?

Answer 8

shiny surfaces