Renewable Enegergy

Question 1

How do fossil fuel power stations work

Answer 1

Furnace burns it
Heat goes to boiler
Water turns to steam
Spins turbine
Generator
Electricity

Question 2

National grid

Answer 2

Network of cables go into transformers

Transformers used to change currants to save more energy (less collisions so less heat released)

Question 3

How do transformers work

Answer 3

Number of coils on one side: number of coils on other side
Ratio

Higher coils, higher voltage

Question 4

What is 1 watt equal to

Answer 4

One joule per second

Question 5

How is the cost of an appliance worked out

Answer 5

Power x time x cost of 1 unit of electricity = cost of using appliance

Question 6

What colour absorbs energy the best and what colour is opposite

Answer 6

Black, also a good emitter, loses heat fast as well

White does the opposite

Question 7

If water release 6jouels a second, how can u heat and cool it

Answer 7

I put more than 6 joules a second and to cool it put in less than 6 joules a second

Question 8

Efficiently equation

Answer 8

Useful energy divided by energy in

Leave as a decimal or %