SP3. ENERGY Flashcards
(7 cards)
1
Q
what is the equation for gravitational potential energy?
A
mass x gravitational field strength x height
2
Q
what is the equation for kinetic energy?
A
KE = 1/2mv2
1/2 x mass x speed 2
3
Q
what is the conservation of energy?
A
The conservation of energy is a fundamental law of physics stating that energy cannot be created or destroyed; it can only be transferred or transformed from one form to another.
4
Q
what is the equation for efficiency?
A
useful energy/ total energy
5
Q
how can you reduce waste?
A
- lubricate systems to decrease friction
- insulate systems to trap heat
6
Q
list some sources of energy:
A
- fossil
- nuclear
- bio-fuel
- solar
- wind
- tidal
- hydroelectricity
7
Q
A
