Energy and Efficiency

HideShow resource information
  • Created by: Heather
  • Created on: 25-05-14 15:27
Name all of the forms of energy?
Magnetic, Kinetic, Heat, light, gravitational potential, chemical, sound, electrical, elastic potential, nucleur
1 of 14
What is the desription of gravitational potential energy?
Energy stored by raised objects-The higher the object, the higher is gravitational potential energy
2 of 14
What is the description of chemical energy?
Stored energy in fuel, food and batteries
3 of 14
What is the description of sound energy
Energy released by vibrating objects
4 of 14
What is the description of electrical energy?
Energy in moving charges or static electric charges,
5 of 14
What is the energy transfer diagram for a car engine?
Chemical energy in the fuel->Kinetic energy + Heat energy +Sound energy
6 of 14
What is the energy transfer diagram for a light bulb?
Electrical energy-> Light + Heat energy
7 of 14
What is the law for energy?
It cannot be created or destroyed
8 of 14
What is the efficiency of a device?
The proportion of the energy supplues that is transferred in useful ways
9 of 14
What two things does the amount of electrical energy transfered depend on?
-The appliances power -The length of time it is switched on,
10 of 14
What does this equation mean? E=P x t
Energy transferred = power x time
11 of 14
What is the unit of power? There are two different units.
-kW or kilowatts -Watts, W
12 of 14
What is the unit of time? There are two different units.
Hours -Seconds
13 of 14
What is the unit for energy transferred? There are two different units.
Kilowatt-hours kWH -Joules, J
14 of 14

Other cards in this set

Card 2

Front

What is the desription of gravitational potential energy?

Back

Energy stored by raised objects-The higher the object, the higher is gravitational potential energy

Card 3

Front

What is the description of chemical energy?

Back

Preview of the front of card 3

Card 4

Front

What is the description of sound energy

Back

Preview of the front of card 4

Card 5

Front

What is the description of electrical energy?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Energy resources »