Power from the Sun and the Earth Flashcards
1
Q
When are solar cells useful?
A
Remote places, Small devices (e.g watch)
2
Q
What is geothermal energy?
A
Energy released by radioactive susbstances deep within the Earth
3
Q
What are some negatives of solar cells / panels?
A
Lots of them are needed, They’re only about 10% effective, Needs to be a sunny day for them to be useful
