Energy

Question 1

Magnetic

Answer 1

Energy stored when repelling poles have been pushed closer together or when attracting poles have been pulled further apart

Question 2

Examples of magnetic energy

Answer 2

Fridge magnets or compasses or maglev trains

Question 3

Internal (thermal)

Answer 3

The total kinetic and potential energy of the particles in an object in most cases vibrations

Question 4

Examples of internal (thermal) energy

Answer 4

Human bodies, hot coffees, stoves or hobs

Question 5

Chemical

Answer 5

Energy stored in chemical bonds

Question 6

Examples of chemical energy

Answer 6

Food or muscles or electrical cells

Question 7

Kinetic

Answer 7

Energy of a moving object

Question 8

Examples of kinetic energy

Answer 8

Runners or buses or comets

Question 9

Electrostatic

Answer 9

Energy stored from repelling charges have been moved closer together or when attracting charges have been pulled further apart

Question 10

Examples of electrostatic energy

Answer 10

Thunder clouds or Van De Groove generators

Question 11

Elastic potential

Answer 11

Energy stored when an object is stretched or squashed

Question 12

Examples of elastic potential energy

Answer 12

Drawn catapults compressed springs or inflated balloons

Question 13

Gravitational potential energy

Answer 13

Energy of an object at height

Question 14

Examples of gravitational potential energy

Answer 14

Aeroplanes or kites or mugs on the table

Question 15

Nuclear

Answer 15

Energy stored in the nucleus of an atom

Question 16

Examples of nuclear energy

Answer 16

Uranium, nuclear power or nuclear reactors

Question 17

Mechanical work transfer

Answer 17

Force moving an object through a distance

Question 18

Electrical work transfer

Answer 18

Charges moving due to a potential difference

Question 19

Heating transfer

Answer 19

Due to temperature difference caused electricity or by chemical reaction

Question 20

Radiation transfer

Answer 20

Energy transferred as a wave e.g. light and infrared - light radiation and infrared radiation are emitted from the Sun

Question 21

The two types of energy flow diagrams

Answer 21

Transfer diagrams and Sankey diagrams

Question 22

Dissipation

Answer 22

When energy is transferred to some of the energy is wasted into the surroundings, e.g. electrical cables warming up

Question 23

How is energy dissipated in a mechanical system

Answer 23

When two surfaces robbed together

Question 24

How can you reduce friction

Answer 24

By using a lubricant so less heat is wasted

Question 25

How can you prevent dissipation in electrical context?

Answer 25

Use LED bulbs instead of filament lamps

Question 26

What energy is dissipated for a radio or speaker?

Answer 26

The electrical work is transferred into useful soundwaves and infrared radiation dissipated

Question 27

What is the useful energy and dissipated energy in a tumble dryer?

Answer 27

Electrical work transfers into useful energy and energy is dissipated by soundwaves

Question 28

Kinetic energy calculation

Answer 28

0.5 x mass x speed(squared) or Ek m v(squared)

Question 29

What is energy measured in?

Answer 29

Joules,J

Question 30

What is mass measured in?

Answer 30

Kilogram,Kg

Question 31

What is speed measured in?

Answer 31

Metres per second, m/s

Question 32

What is the calculation for elastic potential energy?

Answer 32

0.5 x spring constant x extension squared or Ee= 0.5 k e squared

Question 33

What is spring constant measured in?

Answer 33

Newtons per metre, N/m

Question 34

What is extension measured in?

Answer 34

Metres,m

Question 35

What is the calculation for gravitational potential energy?

Answer 35

Mass x gravitational field strength x height or Ep= m g h

Question 36

What is gravitational field strength measured in?

Answer 36

Newtons per kilogram, N/Kg

Question 37

What is height measured in?

Answer 37

Metres,m