Physics P3

Question 1

What are three problems associated eith burning fossil fuels ?

Answer 1

1. Carbon emissions
2. Health risks
3. Global warming

Question 2

What are the waste products of burning fossil fuels ?

Answer 2

Carbon monoxide and carbon dioxide .

Question 3

What are the waste products of using nuclear fuel ?

Answer 3

Uranium mill tailings and reactor fuel

Question 4

What are two advantages of using renewable energy resources ?

Answer 4

. They don’t produce any carbon emissions
. Jobs and economic benefits

Question 5

What are two advantages of using renewable energy resources ?

Answer 5

. They cost a lot to maintain
. Could effect wildlife

Question 6

What dows sulfur dioxide cause to the enviorment?

Answer 6

Can cause deforestation .

Question 7

What does carbon dioxide do to the enviroment ?

Answer 7

Causes the atmosphere to become warmer .

Question 8

What are two ways carbon dioxide emissions can be reduced from fossil fuel power stations

Answer 8

Carbon capture and storage .

Question 9

What are the disadvantages of using solar power ?

Answer 9

Requires sunny weather to workand its not always sunny .

Question 10

What are the disadvantages of using wind turbines ?

Answer 10

They can effect birds that fly in the sky .

Question 11

What are the disadvantages of tidal barrages ?

Answer 11

Could effect sealife .

Question 12

What are the disadvantages of using hydroelectric power ?

Answer 12

Expensive .

Question 13

Is this statement true or false .
Nuclear power causes radiation to be leaked in to the enviroment ?

Answer 13

True

Question 14

What is the order of power stations start up times ?

Answer 14

Coal , oil , nuclear and nuclear gas .

Question 15

What is one advantage of a nuclear power station ?

Answer 15

Doesn’t produce carbon emissions .

Question 16

What are five examples of 6 renewable energy sources ?

Answer 16

Wind , solar , hydroelctric , tidal , wave and gas .

Question 17

What are four examples of non - renewable energy sources ?

Answer 17

Geothermal , coal , biofuels and oil .

Question 18

What are two ways we use electricity ?

Answer 18

Lighting and heating

Question 19

What does carbon neutral mean ?

Answer 19

It means having a balance between emitting carbon and absorbing carbon from the atmosphere .

Question 20

What fuels are considered carbon neutral ?

Answer 20

Biofuels , a fuel made from plants .

Question 21

What are the four stages involved in generating electrcity in a fossil fuel power station ?

Answer 21

1. Coal arrives at the power station and is placed on the furnace to burn .
2. Coal is burnt which then heats up and it converted into steam which then powers the turbines .
3. A transformer converts the heat energy into electrical energy.
4. Electricity then is spread out to our homes .

Question 22

What are 4 examples of renewable energy thay uses wind and water ?

Answer 22

Wind turbines , wave power , hydroelectric and tidal .

Question 23

What is one advantage of using renewable energy sources ?

Answer 23

Producing less pollution

Question 24

What is one disadvantage using renewable energy sources ?

Answer 24

High maintenance

Question 25

Describe how wind turbines work .

Answer 25

Wind turbines use the kinetic energy of the wond to generate enough power to turn its turbine . Turbines will turn and turn generating electrical energy in a generator behind a turbine which then sends the energy to a transformer which then sends it to our homes .

Question 26

Describe how a hydroelectric system works .

Answer 26

A hydroelectric system uses water from high up in valleys behind a dam . At this point we call this potential energy . When water is then released from the dam it causes a big rush from potential to kinetic energy . Down at the bottom of this dam are turbines whish are turned by the current flow of water , this will then cause a generator to change the energy from kinetic to electrical energy .

Question 27

What is one renewable energy source sutable to be placed on a roof of a house ?

Answer 27

Solar panels

Question 28

What is one renewable energy source suitable to be placed on a river vallley ?

Answer 28

Hydroelectric

Question 29

What is a solar cell ?

Answer 29

A solar cell is a device like a solar panel that directly converts light into electricity .

Question 30

How does a solar panel work ?

Answer 30

The sun is captured by a solar panel that is made up of silicon , a conductor of electricity . After the sun hits layers of silicon inside the solar panel an electric charge builds up creating a flow of electricity .

Question 31

What is a solar tower ?

Answer 31

A solar tower is a tower that is set right in the middle of a large amount of mirrors that reflect sunlight onto the top of the tower . This converts its heat energy from the sun to electrical energy .

Question 32

How does a geothermal power station work ?

Answer 32

The gap between the tectonic plates is called the fault line and this gap sometimes lets magma squeeze through . The magma then heats up big pools of water which creates steam , the steam is then drawn to the power plant. The kinetic energy from the steam turns the turbines and a generator converts the k energy to electrical energy .