energy

Question 1

What is energy

Answer 1

Energy is the ability to do work

Question 2

Unit of energy

Answer 2

Joules

Question 3

Kenetic energy

Answer 3

The energy an object has because it is moving

Question 4

Light energy

Answer 4

Given off by anything that glows

Question 5

Sound energy

Answer 5

Vibrations cause by air particles moving

Question 6

Electrical energy

Answer 6

Produced by electrons flowing
*cables are a dead give away

Question 7

Nuclear energy

Answer 7

Released when nuclei split up join together

Question 8

Fusion

Answer 8

Joining nuclei (sun)

Question 9

Fission

Answer 9

Splitting nuclei (power stations)

Question 10

Chemical energy and where to find

Answer 10

Stored energy that is not released until a chemical reaction occurs
Fuel. Batteries. Food.

Question 11

Elastic or strain potential energy

Answer 11

The energy an object has because it has been stretched or compressed

Question 12

Heat energy

Answer 12

Given off by anything above absolute zero (-273*c)

Question 13

Magnetic energy

Answer 13

When there is a magnetic force between two objects

Question 14

How to remember energy names

Answer 14

Most
Kids
Hate
Learning
G
C
S
E
Energy
Names

Question 15

Principle of conservation of energy

Answer 15

Energy cannot be created or destroyed, only changed from one form to another

Question 16

where does almost every energy come from

Answer 16

the sun

Question 17

what energy does not come from the sun

Answer 17

nuclear fuel eg. uranium, tidal and geothermal energy

Question 18

in energy transfer idagrams what line is the useful energy and what part is the non-useful energy

Answer 18

useful energy-straight bit
waste energy- curved bit

Question 19

definition of renewable energy

Answer 19

energy that is collected from resources that will never run out

Question 20

definition of non-renewable energy

Answer 20

an evergy that has a finite supply and will run out

Question 21

why are fossil fuels non-renewable

Answer 21

because they cannot be replaced in a human lifetime

Question 22

energy source of fossil fuels

Answer 22

coal
oil
gas

Question 23

how does of fossil fuels generate electricity

Answer 23

burning them makes stem.
the steam spins turbines which are attached to generators

Question 24

energy transfer diagrams for of fossil fuels

Answer 24

chemical
|
heat
|
kinetic
|
electrical

Question 25

what are the advantages of of fossil fuels

Answer 25

constant energy

Question 26

limitations of of fossil fuels

Answer 26

- non-renewable - will run out - produces carbon dioxide - produces sulphur dioxide

Question 27

how does nuclear fuel produce electricity

Answer 27

fission in fuel rods heats them up steam is produced like a normal power station after that

Question 28

what are the advantages of nuclear fuel

Answer 28

- constant energy - no carbon dioxide produced

Question 29

what are the limitations of nuclear fuel

Answer 29

- non-renewable - uranium will run out

Question 30

how does solar power make electricity

Answer 30

photovoltaic cells convert sunlight directly to electricity

Question 31

nuclear fuel energy transfer diagrams

Answer 31

nuclear | heat | kinetic | electrical

Question 32

solar power energy transfer diagram

Answer 32

light | electrical

Question 33

what are the advantages of solar power

Answer 33

no carbon dioxide produced

Question 34

what are the limitation of solar power

Answer 34

can only happen during the day

Question 35

how does hydroelectric energy produce electricity

Answer 35

- dam holds back vast amounts of water - water is allowed out through turbines - which spins a generator

Question 36

hydroelectric energy transfer diagrams

Answer 36

gpe | kinetic | electrical

Question 37

what are the advantages of hydroelectric

Answer 37

- no carbon dioxide produced - renewable energy - creates lots of energy

Question 38

limitations of hydroelectric

Answer 38

- possible flooding - drought - displaces animals and animals

Question 39

what are the advantages of biomass

Answer 39

loop

Question 40

energy transfer of biomass

Answer 40

chemical | heat | kinetic | electrical

Question 41

energy transfer for geothermal

Answer 41

heat | kinetic | electrical

Question 42

advantages of geothermal

Answer 42

no carbon dioxide produced

Question 43

limitations of geothermal

Answer 43

hot rock not always near enough to surface

Question 44

advantages of wind energy

Answer 44

no carbon dioxide

Question 45

limitations of wind energy

Answer 45

no wind no energy

Question 46

advantages of wave energy

Answer 46

no carbon dioxide and its renewable

Question 47

limitations of wave energy

Answer 47

no waves=no energy

Question 48

advantages of tidal energy

Answer 48

tides come 2x a day at predictable times no carbon dioxide

Question 49

limitations of tidal energy

Answer 49

tide heights depends on the time of year

Question 50

what causes acid rain

Answer 50

sulphur dioxide

Question 51

definition of acid rain

Answer 51

rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. the main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contains sulphur and nitrogen oxides which combine atmosphere water to form acids.

Question 52

what causes global warming

Answer 52

carbon dioxide

Question 53

what is work

Answer 53

a force that causes movement

Question 54

when does work happen

Answer 54

happens when energy is changed from one form to another

Question 55

equation for work

Answer 55

. /__w__\ /_F_|_D_\

Question 56

what is power

Answer 56

the rate at which work is done

Question 57

what is work measured in

Answer 57

joules

Question 58

what is power measured in

Answer 58

WATTS

Question 59

equations for power

Answer 59

. /__w__\ /_P_|_t_\

Question 60

gravitational potential energy equation

Answer 60

Ep = m × g × h

Question 61

kinetic energy equation

Answer 61

K.E. = 1/2 x m x v2

Question 62

Efficiency =

Answer 62

Efficiency = useful power out ÷ total power in

Question 63

why can efficiency never be more than 1

Answer 63

principle of conservation