P3 - Energy Flashcards
1
Q
what types of energy are there?
A
solar, wind and nuclear
2
Q
what is renewable energy?
A
energy which can be generated from a source which won’t run out.
3
Q
how do wind turbines generate energy?
A
they convert the kinetic energy of moving air into electricity. the wind turns the blades, which turn a generator.
4
Q
advantages of wind turbines?
A
cheap to run, no pollution and renewable.
5
Q
disadvantages of wind turbines?
A
noise pollution, need high winds for it to be successful, expensive to set up, difficulty to find suitable places to place them.
6
Q
what can you capture the suns energy with?
A
photocells
7
Q
what are curved mirrors useful for?
A
converting energy from the sun
8
Q
how do curved mirrors work?
A
they focus the suns light and heat.
9
Q
what are photocells usually made of?
A
silicon
