3.1.2 Energy generation and usage Flashcards
(4 cards)
1
Q
kinetic pumped storage systems
A
when demand is low, excess energy is used to pump water back into the reservoir for hydroelectric power.
2
Q
alkaline batteries
A
power output gradually decreases as chemical reactants are used up
3
Q
rechargeable batteries
A
constant output until battery goes flat.
Charging from mains electricity reverses chemical reaction inside
4
Q
fracking
A
high pressure pumped into ground so rocks release gas and oil
