Year8-Energy Recources

Question 1

When were coal oil and gas formed?

Answer 1

Millions of years ago and that is why they are called fossil fuels.

Question 2

What is an energy resource?

Answer 2

A chemical that has energy

Question 3

What are non-renewable recourses?

Answer 3

Recourses that you can use again but you can’t get when they run out.

Question 4

How are non-renewable recourses formed?

Answer 4

Trees and sea creatures compress over millions of years

Question 5

What do power stations produce?

Answer 5

Thermal power stations burn coal, oil and gas which make petrol, plastics etc… (energy)

Question 6

How does a thermal power station work?

Answer 6

A fuel burns steam which moves a turbine which makes steam condense and goes in a cycle.

Question 7

Why are fossil fuels bad?

Answer 7

Because it starts global warming from greenhouse gases.

Question 8

What is an alternative to using fossil fuels?

Answer 8

Renewable recources.

Question 9

How can you determine wether a recourse is renewable?

Answer 9

If you can replace it in your lifetime, then it is renewable.

Question 10

Give examples of renewable recources

Answer 10

Wind energy, tidal energy, wave energy, biomass, solar energy, hydroelectric and geothermal.

Question 11

Give some advantages of wave energy

Answer 11

No harmful byproducts, very powerful and produces 2640 TW compared to other sources.

Question 12

Give a definition of wave energy

Answer 12

Using power from the waves and converting it into energy when brought back to land

Question 13

Give some disadvantages of wave energy

Answer 13

The location for strong winds is required. Only towns nearby will benefit from it. Areas far from sea have to have an alternative

Question 14

Give a definition of wind power

Answer 14

Wind power is produces by a turbine from kinetic energy which can convert itself into electricity.

Question 15

Give some advantages of wind power.

Answer 15

It prevents pollution by using wind. It is easy to convert it into electricity. Wind everyday provides a good source of energy. It’s beneficial for everyone.

Question 16

Give disadvantages of wind power.

Answer 16

In the making, it produces green house gases. Needs transport which can lead to traffic. Need the right location for more electricity.

Question 17

What is nuclear energy?

Answer 17

It is the energy that holds together the nuclei of atoms.

Question 18

Give some advantages of nuclear energy.

Answer 18

Easy to pay off when built. Low pollution rates. We have enough uranium for 70 to 80 years.

Question 19

Give some disadvantages.

Answer 19

Has 3 waste streams. Radioactive material could be released into the environment if damaged. People could make there own nuclear energy for criminal uses.

Question 20

What is tidal energy?

Answer 20

It is the energy obtained by the ocean

Question 21

Give advantages of tidal energy

Answer 21

No manual work required so fully automatic. Doesn’t use any natural resources.

Question 22

Disadvantages of tidal energy.

Answer 22

Slow process between different tines of tides. (Low to high). Could disrupt shipping routes when made and could kill an animal. Really expensive and hard to fix.

Question 23

What is biomass?

Answer 23

Burning plants but releases carbon dioxide but can be regrown.

Question 24

Advantages of biomass.

Answer 24

Takes i carbon dioxide by plants. Called carbon neutral because when burnt, the co2 goes to another plant. Very cheap to use as it is 1/3 the price of coal. Reduces landfill.

Question 25

Disadvantages of biomass

Answer 25

Hold a lot of bacteria and bot 100% clean. Complex and expensive . Causes deforestation.

Question 26

What is geothermal energy?

Answer 26

Hot water from the earth turns a turbine and which generates electricity and cold water that got compressed from steam is injected back to re-use.

Question 27

Advantages of geothermal

Answer 27

No fuel costs. Good for house uses. Available anywhere.

Question 28

Disadvantages of geothermal.

Answer 28

Unattainable. Greenhouse gases can ruse to the surface. Heating and cooling systems take a long time.

Question 29

What is hydroelectric energy?

Answer 29

Water turns a turbine which converts into electricity.

Question 30

Give advantages of hydroelectric.

Answer 30

Fuelled by water. Relied on the sun every day. Generate power quite fast.

Question 31

Disadvantages of hydroelectrics

Answer 31

Expensive to perform. Needs a lot of water . Changes the environment in which the dam is built in.

Question 32

What is solar energy?

Answer 32

Uses the suns rays and converts to electricty.

Question 33

Give some disadvantages of solar energy.

Answer 33

The sun comes out everyday. Government supports it. Don’t produce any noise meaning you could put it on your house.

Question 34

Solar energy disadvantages.

Answer 34

Needs clear weather. Solar panels are very expensive. Storing the energy is also expensive.