Topic - Heat

Question 1

When electricity flows in a wire, what happens?

Answer 1

Heat is lost

Question 2

How can we reduce the amount of heat that is lost in electricity?

Answer 2

By raising the voltage which then lowers the current

Question 3

In a house, how does heat move?

Answer 3

From regions of high temperature to regions of lower temperature

Question 4

Why is it essential to reduce these losses?

Answer 4

Save Money, Save Energy Resources, Reduce Pollution, Reduce Global Warming

Question 5

What are the three ways that Heat can move?

Answer 5

Conduction, Convection and Radiation

Question 6

What happens in Conduction?

Answer 6

They are solids so they vibrate as they are heated

Question 7

What happens in Convention?

Answer 7

The particles, which are solids and liquids, cool down ans sink. The hot particles then rise

Question 8

So then what happens in Radiation?

Answer 8

Hot objects radiate heat energy

Question 9

What type of waves are in Radiation?

Answer 9

Infra Red

Question 10

How is heat lost in a home?

Answer 10

10% lost through unecessary droughts, 
35% lost through external walls
25% lost through roof
15% heat lost through doors and windows 
10% lost through exposed floors