2016 AQA Physics Unit 1 - Unofficial Mark scheme

Soo confused. Was it 340m/s for the speed of sound???


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I think it was average P = E/t = 46,200kWh/2h = 23,100W

1. Frequency

2. Echoes

3. spread out, same as

b) vibrations are parallel to the direction of energy transfer

4. Expensive as National Grid is a long distance away from rural areas

4b) ADVANTAGES
constant supply, little variation in output
£30k cheaper than wind turbine
renewable resource
doesn't produce as much noise as wind
No CO2

DISADVANTAGES
could ruin ecosystem by preventing free movement of fish
May need maintenance unlike wind
Lower power output - 8W compared to 10W

Wind - ADVANTAGES
higher average output
Needs little maintenance
renewable resource
Easily expanded
No CO2

DISADVANTAGES
Eyesore
noise pollution
Wind speeds vary, meaning there could be times of under- or oversupply
Costs 50k, 30k more than HEP

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings

calculation questions, 340 m/s for first one, then 78 degrees , then 6.4 watts then 0.07 degrees/s efficiency question was 0.48 W


6. Fins increase surface area and black matt a are good absorbers of heat

7. cosmic microwave background radiation

b) provides evidence for the big bang theory


10. They keep costs as low as possible as efficiency does not increase as much but the cost goes up rapidly , ( give example and data figures to secure the marks)


11. why france will still use nuclear power , cost of electricity is cheaper(1) and produces much more electricity(1) , produces no greenhouse gases like co2(1)

12. Disadvantages of nuclear power stations: raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

1. Frequency

2. Echoes

3. spread out, same as

b) vibrations are parallel to the direction of energy transfer

4. Expensive as National Grid is a long distance away from rural areas

4b) ADVANTAGES
constant supply, little variation in output
£30k cheaper than wind turbine
renewable resource
doesn't produce as much noise as wind
No CO2

DISADVANTAGES
could ruin ecosystem by preventing free movement of fish
May need maintenance unlike wind
Lower power output - 8W compared to 10W

Wind - ADVANTAGES
higher average output
Needs little maintenance
renewable resource
Easily expanded
No CO2

DISADVANTAGES
Eyesore
noise pollution
Wind speeds vary, meaning there could be times of under- or oversupply
Costs 50k, 30k more than HEP

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings

calculation questions, 340 m/s for first one, then 78 degrees , then 6.4 watts then 0.07 degrees/s efficiency question was 0.48 W


6. Fins increase surface area and black matt a are good absorbers of heat

7. cosmic microwave background radiation

b) provides evidence for the big bang theory


10. They keep costs as low as possible as efficiency does not increase as much but the cost goes up rapidly , ( give example and data figures to secure the marks)


11. why france will still use nuclear power , cost of electricity is cheaper(1) and produces much more electricity(1) , produces no greenhouse gases like co2(1)

12. Disadvantages of nuclear power stations: raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. factors that affect rate of energy transfer of mug: room temperature, surface area .

b) particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles .

1. Frequency

2. Echoes

3. spread out, same as

b) vibrations are parallel to the direction of energy transfer

4. Expensive as National Grid is a long distance away from rural areas

4b) ADVANTAGES
constant supply, little variation in output
£30k cheaper than wind turbine
renewable resource
doesn't produce as much noise as wind
No CO2

DISADVANTAGES
could ruin ecosystem by preventing free movement of fish
May need maintenance unlike wind
Lower power output - 8W compared to 10W

Wind - ADVANTAGES
higher average output
Needs little maintenance
renewable resource
Easily expanded
No CO2

DISADVANTAGES
Eyesore
noise pollution
Wind speeds vary, meaning there could be times of under- or oversupply
Costs 50k, 30k more than HEP

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings

calculation questions, 340 m/s for first one, then 78 degrees , then 6.4 watts then 0.07 degrees/s efficiency question was 0.48 W


6. Fins increase surface area and black matt a are good absorbers of heat

7. cosmic microwave background radiation

b) provides evidence for the big bang theory


10. They keep costs as low as possible as efficiency does not increase as much but the cost goes up rapidly , ( give example and data figures to secure the marks)


11. why france will still use nuclear power , cost of electricity is cheaper(1) and produces much more electricity(1) , produces no greenhouse gases like co2(1)

12. Disadvantages of nuclear power stations: raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. factors that affect rate of energy transfer of mug: room temperature, surface area .

b) particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles .

I added it to the 100 to get 122

If I said Cosmic Background Radiation would I still get the mark?

If I said Cosmic Background Radiation would I still get the mark?

They both travel at the speed of light
They both can travel through a vacuum

12. Can you say an explosion at a nuclear power plant is very dangerous?

i've put they can be refracted and reflected.. would that count?

i've put they can be refracted and reflected.. would that count?

If I said Cosmic Background Radiation would I still get the mark?