1. To know how heat moves by convection.
Why do all houses have these now?
How could you improve the energy efficiency rating of a house?

2. To know how heat moves by convection.
Type of insulation
Possible saving per year
Cavity-wall
£411
Low-energy lighting
£11
Hot water cylinder thermostat
£102
Band A condensing boiler
£323
Double glazed windows
£30
Solar photovoltaic panels
£49
OVERALL EFFECT
£926

3. To know how heat moves by convection.
Success criteria-
State ways to improve the efficiency of a house.
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.
Creative thinkers

4. To know how heat moves by convection.

5. To know how heat moves by convection.
Demo- Smoke chimney.
What do you notice?
Why?
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.

6. To know how heat moves by convection.
Watch the demo. What happens? Why?
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.

7. To know how heat moves by convection.
Watch the demo. What happens? Why?
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.

8. To know how heat moves by convection.
This cycle is called a convection current.
On mini whiteboards-
Can you explain how the convection current moves using the idea of density?
H E A T

9. To know how heat moves by convection.
The particles spread out and become less dense.
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.

10. To know how heat moves by convection.
Hot
Cold
Watch the demo.
What happens?
Why?
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.

11. To know how heat moves by convection.
Information race- WJEC Pg
If draught excluders are barriers, what do they stop entering?
What is a fluid?
What makes the Earth’s plates move?
What are Hadley cells?
What happens to the warm air from a radiator?
Why does the cold air sink?

12. To know how heat moves by convection.
PAIRED talking
Watch animation.
What does it show?
Use key words- fluid, hot, cold, atoms, more dense, less dense, rises, falls

13. To know how heat moves by convection.
Success criteria-
State ways to improve the efficiency of a house.
Identify fluids and how they move.
Describe why fluids rise.
Describe why convection currents happen in different situations.
Creative thinkers

14. To know how heat moves by convection.
On your own-
How do convection currents work in a room?
6 marks
Success criteria-

15. To know how heat moves by convection.
Where is the freezer compartment put in a fridge?
Freezer compartment
It is warmer at the bottom, so this warmer air rises and a convection current is set up.
It is put at the top, because cool air sinks, so it cools the food on the way down.

16. To know how heat moves by convection.