Energy Resources And Transfer

Question 1

Types of energy

Answer 1

Kinetic
Thermal
Chemical
Gravitational potential
Electrostatic
Magnetic
Nuclear

Question 2

Kinetic

Answer 2

Anything moving has energy in its kinetic energy store

Question 3

Thermal

Answer 3

Any object

The hotter it is the more energy it has in this store

Question 4

Chemical

Answer 4

Anything that can release energy in a chemical reaction

Ie food and fuel

Question 5

Gravitational potential

Answer 5

Anything stretched like springs and rubber bands

Question 6

Electrostatic

Answer 6

Two charges that attract or repel each other

Question 7

Magnetic

Answer 7

Two magnets that attract or repel each other

Question 8

Nuclear

Answer 8

Atomic nuclei release energy from this store in nuclear reactions

Question 9

4 ways transfer between stores

Answer 9

Mechanically
Electrically
By heating
By radiation

Question 10

Mechanically

Answer 10

An object moving due to a force acting on it eg pushing
Pulling
Stretching
Squashing

Question 11

Electrically

Answer 11

A charge moving through a potential difference
Eg
Charges moving round a circuit

Question 12

By heating

Answer 12

Energy transferred from a hotter object to a colder object

Heating a pan of water on a hob

Question 13

By radiation

Answer 13

Energy transferred by electromagnetic waves
Like light
Eg
Energy from the sun reaching earth as light

Question 14

Principle of conservation of energy

Answer 14

Energy can be stored, transferred between stores, or dissipated
But can never be created or destroyed
The total energy of a closed system has no net change

Question 15

Wasted energy

Answer 15

Most energy transfers involve some losses often by heating

Question 16

Principle (wasted energy)

Answer 16

Energy is only useful when it is transferred from one store to a useful store

Question 17

Wasted energy diagram

Answer 17

Question 18

Formula

Efficiency of an energy transfer

Answer 18

Question 19

Describing energy transfer (examples)

Answer 19

Question 20

Sankey diagrams

Answer 20

Question 21

3 Ways energy transfer by heating can happen

Answer 21

Radiation
Conduction
Convection

Question 22

Thermal radiation

Answer 22

Transfer of energy by heating by infrared electromagnetic waves

Question 23

Conduction and convection

Answer 23

Are energy transfers that involve the transfer of energy by particles

Question 24

Conduction

Answer 24

Main form of energy transfer by heating in solids

Question 25

Convection

Answer 25

Main form of energy transfer by heating in liquid and gases

Question 26

Emission of thermal radiation

Answer 26

Occurs in solids liquids and gases Any object can both absorb and emit thermal radiation Whether or not conduction or convection are also taking place

Question 27

The bigger the temperature difference the ….

Answer 27

Faster energy is transferred between the thermal energy stores of a body and its surroundings

Question 28

Thermal radiation involves

Answer 28

Question 29

Conduction

Answer 29

Question 30

Thermal conduction

Answer 30

Process where vibrating particles transfer energy from their kinetic energy store to the kinetic energy stored of neighbouring particles

Question 31

Experiment to demonstrate conduction

Answer 31

Question 32

Convection

Answer 32

The occurs when the more energetic particles move from a hotter region to a cooler region and transfer energy as they do

Question 33

Immersion heater example

Answer 33

Question 34

Energy transfers by heating

Answer 34

Question 35

How to investigate emission of IR radiation

Answer 35

Question 36

Work done

Answer 36

Energy transferred

Question 37

Principle work done

Answer 37

When a force moves an object through a distance Work is done On the object and Energy is transferred

Question 38

Formula work done

Answer 38

Work done = force x distance moved

Question 39

Power

Answer 39

Rate of doing work Ie How much per second

Question 40

Power definition

Answer 40

Power is the rate at which energy is transferred

Question 41

Power Work done Time taken Calculation

Answer 41

Question 42

Energy in kinetic energy store calculation

Answer 42

Question 43

Energy in gravitational potential energy store calculation

Answer 43

Question 44

Energy lost from GPE store equation

Answer 44

Question 45

Non renewable energy resources

Answer 45

Question 46

Advantages Disadvantages Fossil fuels

Answer 46

Question 47

Explain nuclear reactor + diagram

Answer 47

Question 48

Geothermal power | What is is / describe

Answer 48

Question 49

Wind farms facts

Answer 49

Question 50

Wave power facts

Answer 50

Question 51

How solar cells work

Answer 51

Question 52

Tidal barrages | Explanation

Answer 52

Question 53

Hydroelectricity

Answer 53

Question 54

How generating electricity using water

Answer 54

Question 55

How to find density

Answer 55

Question 56

Pressure calculation

Answer 56

Question 57

Pressure difference calculation

Answer 57