1
Q
explain what solar cells do
A
they convert solar energy directly into electrical energy
2
Q
what is hydroelectricity
A
it is a form of generating electricity when water falls from high places gravitational potential energy is converted to electrical energy
3
Q
what are wind turbine
A
long turbines with fans which generate electricity from the wind spinning the fan
4
Q
what is tidal power
A
generates electricity when turbines are moved by the current of the river
5
Q
what are bio-fuels
A
can be used the same way as fossil fuels. they are made from animal waste or from plants. they are carbon neutral because when they burn they produce the same amount of carbon dioxide as they took from the air
