May Still Be Assessed (generating Electricity/ Static Electricity/ Radiation)

Question 1

What is a renewable energy resource?

Answer 1

A resource that can be replenished as it is used

Question 2

What is a finite resource?

Answer 2

One that is going to run out

Question 3

What is biofuel?

Answer 3

any fuel taken from living or recently living materials, such as animal waste

Question 4

What is geothermal energy?

Answer 4

energy released by radioactive substances deep within the Earth

Question 5

What is nuclear fuel?

Answer 5

substance used in nuclear reactors that releases energy due to nuclear fission

Question 6

What are some positive features of biofuels?

Answer 6

They are renewable and carbon neutral

Question 7

What are some positives of nuclear energy?

Answer 7

• it does not emit greenhouse gases

- it produces much more energy than fossil fuels

Question 8

What are some negatives of nuclear energy?

Answer 8

• it produces nuclear waste which needs to be stored for many years.
• An accident in a nuclear power plant can make the surrounding area unusable for many years.

Question 9

What are some positives of Wind Power?

Answer 9

It is carbon neutral, It is renewable

Question 10

What are some negatives of Wind Power?

Answer 10

• It is unreliable as wind speed can fluctuate

- They can make lots of noise

Question 11

What are some positives of Wave Power?

Answer 11

They are carbon neutral, they are renewable

Question 12

What are some negatives of Wave Power?

Answer 12

• They are an unreliable source of energy, they need lots of cables and buildings along the coast to connect to the electricity grid.
• They can affect habitats

Question 13

What are positives of solar cells/panels?

Answer 13

• They cost nothing to run

- They are carbon neutral,

Question 14

What are some negatives of solar cells/panels?

Answer 14

• They cost a lot to buy

- they are unreliable, only 10% of the energy they receive is converted into electricity

Question 15

What are some negatives of fossil fuels

Answer 15

• They release greenhouse gases

- They are not renewable.

Question 16

What are some positives of fossil fuels

Answer 16

• readily available

- cheap source of electricity

Question 17

What are Examples of Renewable resources?

Answer 17

• Sun
• Wind
• Water (Tidal, HEP)
• Geothermal

Question 18

What are Examples of finite resources?

Answer 18

• fossil fuels nuclear

Question 19

Describe the production of static electricity by rubbing surfaces

Answer 19

• When insulating materials rub against each other, they may become electrically charged.
• Electrons, which are negatively charged, may be ‘rubbed off’ one material and on to the other.
• The material that gains electrons becomes negatively charged.
• The material that loses electrons is left with a positive charge.

Question 20

What is an electric field

Answer 20

An electric field is a region where charges experience a force.

Question 21

What are the 3 times of radiation?

Answer 21

• Alpha radiation (α)
• Beta radiation (β)
• Gamma Radiation (γ)

Question 22

Summaries Alpha radiation (α)

Answer 22

• Known as Helium nuclei (4,2)
• Very Large
• Highly ionising
• Not highly penetrating
• Stopped by paper or skin

Question 23

Summaries Beta radiation (β)

Answer 23

• Known as an electron (0, -1)
• Medium Size
• Medium ionisation
• Medium penetration
• Stopped by Aluminium foil

Question 24

Summaries Gamma Radiation (γ)

Answer 24

• Part of the electromagnetic spectrum (it is a wave)
• Very Small
• not highly ionising
• Highly penetrating
• Stopped by thick lead

Question 25

What measures radiation?

Answer 25

Geiger-muller tube

Question 26

Unit for Radiation

Answer 26

becquerels (Bq)

Question 27

What is half-life?

Answer 27

Time it takes for half the radioactive atoms to decay

Question 28

Isotopes - half life???

Answer 28

Different isotopes will have different half lives