Alternative Energy Flashcards
1
Q
Parts of generators/electric motors
A
- Spinning magnet
- 2 coils
- Alternating voltage
- Harder to turn when there is a large load
2
Q
How do cars waste energy
A
Drag, engine, breaking
3
Q
Hybrids - full power
A
Gas engine and electric motor drain battery
4
Q
Hybrids - breaking
A
Motor/generator acts as a generator, slows car, charges batteries
5
Q
Hybrids - highway driving
A
Gas engine pushes car and charges batteries
6
Q
Hydrogen fuel cells
A
Behaves like a battery –> recharged by adding hydrogen
7
Q
Photovoltaic cell
A
Solar cell, makes electricity using sun light, photons seperate charge, electric field pushes them, end with electrons has higher energy
8
Q
Quantum mechanics
A
Electrons and photos behave as particles and waves, electrons have discrete energies, different electrons have different energy levels
