P2 - Using the suns energy

Question 1

Where is some of the suns energy stored?

Answer 1

Fossil Fuels

Question 2

what do photocells generate?

Answer 2

Direct current (DC)

Question 3

what is direct current?

Answer 3

it means it just flows in the same direction instead of AC switching directions

Question 4

what a photocells usually made of?

Answer 4

silicon

Question 5

what happens when the sunlight falls on the photocell?

Answer 5

the silicon absorb some of the energy, knocking loose some electrons, they then flow around a circuit which is electricity

Question 6

Advantages of a photocell…

Answer 6

they are sturdy, low maintenance, last a long time, no fuel or power cables, its renewable

Question 7

Disadvantages of a photo cell…

Answer 7

no sunlight no power, not good when the weathers bad

Question 8

what can one curved mirror power? what can lots of curved mirrors power?

Answer 8

solar oven and generate steam to create electricity

Question 9

Ads of curved mirror…

Answer 9

track the suns light energy and if they are pointed directly to the sun they can collect the maximum amount of heat