energy

Question 1

name the 10 types of energy

Answer 1

light
kinetic energy
chemical energy
nuclear energy
gravitational potential energy
magnetic
sound
heat energy
electrical energy
strain potential energy

Question 2

What the law of conservation of energy

Answer 2

Energy can’t be created or destroyed only changed from one from to another.

Question 3

What is energy measured in

Answer 3

Joules (J)

Question 4

How mush joules of energy is needed to lift and apple vertically 1m

Answer 4

1 joules

Question 5

What is work done

Answer 5

Work is done when energy is changed from one form to another

Question 6

equation for work done

Answer 6

W.D = F x D

Question 7

what is Force measured in

Answer 7

Newtons (N)

Question 8

what is distance measured in

Answer 8

Meter (M)

Question 9

equation of gravitational potential energy

Answer 9

PE=m g h

Question 9

equation of kinetic energy

Answer 9

K.E. = 1/2 m v2

Question 10

what is mass measured in

Answer 10

kg

Question 11

what is velocity measured in

Answer 11

m/s

Question 12

what is hight measured in

Answer 12

m

Question 13

what is acceleration due to gravity measured in

Answer 13

m/s2 or N/m2

Question 14

equation for power

Answer 14

P = W.D/T or P = FxD/T

Question 15

what is power

Answer 15

Power is the rate at which work is being done
OR
The rate at which ever energy is being transferred from one form to another Units for Power

Question 16

what is power measured in

Answer 16

Watts or Joules/second

Question 17

equation for efficiency

Answer 17

efficiency = useful output energy/total input energy

Question 18

What renewable energy

Answer 18

An energy resource which will never run out and is replaced by nature is less than a human life time.

Question 19

What non-renewable energy

Answer 19

An energy resource that has a finite supply and it will run out some time.

Question 20

Name 7 renewable energy

Answer 20

solar
bio mass
geothermal
tidal
hydro electrical
waves
wind

Question 21

name 4 non-renewable energy

Answer 21

coal
natural gas
nuclear
oil

Question 22

Advantage of solar

Answer 22

renewable energy
no fuel cost
no greenhouse gas

Question 23

Disadvantage of solar

Answer 23

expensive
don’t work at night

Question 24

Advantage of biomass

Answer 24

renewable only if crops are planted

Question 25

Disadvantage of solar

Answer 25

release of carbon dioxide

Question 26

Advantage of geothermal

Answer 26

renewable
no greenhouse gas
cheep once built

Question 27

Disadvantage of geothermal

Answer 27

few area suitable
expensive to build

Question 28

Advantage of tidal

Answer 28

running costs are low
no waste
no greenhouse gas
cheep once built

Question 29

Disadvantage of tidal

Answer 29

tidal always work
expensive
only work in certain areas

Question 30

Advantage of hydroelectrical

Answer 30

low running cost
no greenhouse gas produced
it can respond to demand

Question 31

Disadvantage of hydroelectrical

Answer 31

expensive to build
need mountains
environmental impact

Question 32

Disadvantage of wind

Answer 32

no wind no power
not reliable
windmill looks ugly

Question 33

Advantage of wind

Answer 33

low running cost
no greenhouse gas

Question 34

Advantage of coal (fossil fuel)

Answer 34

Ready-made fuel. It is relatively cheap to mine and to convert into energy. Coal supplies will last longer than oil or gas,

Question 35

Disadvantage of coal (fossil fuel)

Answer 35

When burned coal gives off atmospheric pollutants, including greenhouse gases,

Question 36

Disadvantage of oil (fossil fuel)

Answer 36

When burned, it gives off atmospheric pollutants, Including greenhouse gases. Only a limited supply

Question 36

Advantage of oil (fossil fuel)

Answer 36

Oil is a ready-made fuel. Relatively cheap to extract and to convert into energy.

Question 37

Advantage of natural gas (fossil fuel)

Answer 37

Gas is a ready- made fuel. It is a relatively cheap form of energy. It’s a slightly cleaner fuel than coal and oil.

Question 38

Disadvantage of natural gas (fossil fuel)

Answer 38

When burned, it gives off atmospheric pollutants, including greenhouse gases. Only limited supply of gas.

Question 39

Advantage of nuclear (fossil fuel)

Answer 39

A small amount of radioactive material produces a lot of energy. Raw materials are relatively cheap and can last quite a long time. It doesn’t give off atmospheric pollutants.

Question 40

Disadvantage of nuclear (fossil fuel)

Answer 40

Nuclear reactors are expensive to run. Nuclear waste is highly toxic, and needs to be safely stored for hundreds or thousands of years (storage is extremely expensive). Leakage of nuclear materials can have a devastating impact on people and the environment. The worst nuclear reactor accident was at Chernobyl, Ukraine in 1986.