Core Questions Physics Energy
1.
2.
What is energy measured in?
Name 8 energy stores
3.
4.
5.
6.
7.
What is the energy store in an apple in a tree?
What is the energy store in a moving car?
What is the energy store in a lump of coal?
What is the energy store in a lit candle?
What store of energy is associated with the height
of an object above ground level?
What store of energy is associated with a stretched
spring?
What store of energy is associated with
movement?
What is the energy change when a ball is dropped?
What is the energy change when a car brakes?
What is the energy change when a catapult is
fired?
What is the energy change when water is boiled in
an electric kettle?
What is meant by conservation?
What is meant by the conservation of energy law?
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
What is meant by mass?
What is the unit of mass?
What is weight?
What is the unit of weight?
What does gravitational potential energy depend
on?
What does kinetic energy depend on?
What type of energy does an object have when it is
lifted?
What type of energy does an object have when it is
moving?
What is the energy transfer when an object falls?
What is the energy transfer when an object is
thrown up?
What is the scientific name for heat?
What does thermal energy depend on?
28. What are the three states of matter?
29. What is an area without particles called?
30. Which state of matter transfers thermal energy
quickest?
31. What is conduction?
32. What is convection?
33. What is radiation?
34. What does equilibrium mean?
35. What does thermal equilibrium mean?
36. What is a thermal conductor?
37. What is a thermal insulator?
Joules
Chemical, electrical, elastic, light, sound, kinetic,
gravitational potential, thermal
Gravitational potential
Kinetic
Chemical
Thermal and light
Gravitational potential
1
1
Elastic
1
Kinetic
1
Gravitational potential  kinetic
Kinetic  thermal + sound
Elastic  kinetic + thermal
1
1
1
Electrical  thermal + sound
1
Keeping the amount of something the same
Energy cannot be created or destroyed, only
transferred
Number of particles in an object
Kilograms
Force felt by an object due to a gravitational field.
Newtons
Mass of the object, height the object has been raised
and the gravitational field strength
Mass of the object and the speed it is travelling at
Gravitational potential energy
1
1
Kinetic energy
2
Gravitational potential  kinetic
Kinetic  gravitational potential
2
2
Thermal energy
Mass of the object, type of object, change in
temperature of the object
Solid, liquid, gas
A vacuum
Solid
3
3
Thermal energy transfer in a solid
Thermal energy transfer in a liquid and gas
Thermal energy transfer in a vacuum
The state of balance
When the temperature of objects are
constant/balanced
A material good at transferring thermal energy
A material bad at transferring thermal energy
3
3
3
3
3
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
38.
39.
40.
41.
42.
What is power?
What is the equation to find power?
What is the unit of power?
What is the unit of time?
What is the unit of energy that energy companies
use?
43. What is meant by a renewable energy source?
44. Give 4 examples of a renewable energy resource
45. Name 3 fossil fuels
46. What is meant by a non-renewable energy
resource?
47. Give 4 examples of non-renewable energy
resources
48. What is the energy transfer in a wind turbine?
49. What is the energy transfer in a geothermal power
station?
50. What is the energy transfer in a hydroelectric dam?
51. What is the energy transfer in a fossil fuel power
station?
52. What is an advantage of a wind turbine?
53. What is a disadvantage of a wind turbine?
54. What is meant by wasted energy?
55. What is meant by useful energy?
56. What is meant when something has a high
efficiency?
57. What is the equation for efficiency?
The rate of energy transfer
Power = energy ÷ time
Watts
Seconds
Kilowatt hours
4
4
4
4
4
A resource which will never run out
Wind, solar, tidal, wave, geothermal, biomass,
hydroelectric dam
Coal, oil, gas
A resource which will run out one day
5
5
Coal, oil, gas, nuclear
5
Kinetic  electrical + thermal
Thermal  kinetic  electrical + thermal
5
5
Gravitational potential  kinetic  electrical
Chemical  thermal  kinetic  electrical
5
5
Renewable, doesn’t produce greenhouse gases
Unreliable and unpredictable, loud, take up space
Energy which is not useful to the system
Energy which is useful to the system
Most of the energy is transferred into useful energy
5
5
6
6
6
Efficiency = (useful energy out ÷ total energy in) x
100
6
5
5