Aqa physics GCSE unit 1 unofficial marks scheme Watch

ah_x
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Questions & answers: 1. Frequency (1)

2. Reflected sound wave = Echoes

3. Spread out, same as (2)

b) vibrations are parallel to the direction of energy transfer (2)

4. Expensive as National Grid is a long distance away from rural areas (1)

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 (6)

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings(2)

b) properties of microwaves and infra-red radiation (2): can diffract, can refract, travel same speed in vacuum, both transverse waves, can be reflected

calculation questions, 340 m/s for first one (2) then Specific heat capacity 78 degrees(3) , then 6.4 watts(2) then 0.07 degrees/s (2) efficiency question was 0.48 W (2)


6. Fins increase surface area and black matt are good absorbers of heat (2)

7. Cosmic microwave background radiation (1)

b) provides evidence for the big bang theory (1)


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) (2)


11. Why France will still use nuclear power (2) : 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 (2): raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. Factors that affect rate of energy transfer of mug (2): room temperature, surface area.

b) Particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles. (2)


c) how is a convection current formed in the mug(4): liquid at the bottom is heated and particles gain kinetic energy and move away from each other, this makes the liquid less dense , causing it to rise and displace the denser colder air at the top , the denser particles then fall and is heated again.


14) Control variable for the investigation measuring rate of evaporation (1): same beaker or same type of beaker, same position in the room. Same thermometer.
Source- http://gcseanswers.co.uk/physics
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journey122
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if this is right, I lost about 7 marks
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ah_x
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(Original post by journey122)
if this is right, I lost about 7 marks
That would still be an A* I'm guessing
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TrumpIsFancy
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(Original post by ah_x)
Questions & answers: 1. Frequency (1)

2. Reflected sound wave = Echoes

3. Spread out, same as (2)

b) vibrations are parallel to the direction of energy transfer (2)

4. Expensive as National Grid is a long distance away from rural areas (1)

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 (6)

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings(2)

b) properties of microwaves and infra-red radiation (2): can diffract, can refract, travel same speed in vacuum, both transverse waves, can be reflected

calculation questions, 340 m/s for first one (2) then Specific heat capacity 78 degrees(3) , then 6.4 watts(2) then 0.07 degrees/s (2) efficiency question was 0.48 W (2)


6. Fins increase surface area and black matt are good absorbers of heat (2)

7. Cosmic microwave background radiation (1)

b) provides evidence for the big bang theory (1)


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) (2)


11. Why France will still use nuclear power (2) : 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 (2): raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. Factors that affect rate of energy transfer of mug (2): room temperature, surface area.

b) Particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles. (2)


c) how is a convection current formed in the mug(4): liquid at the bottom is heated and particles gain kinetic energy and move away from each other, this makes the liquid less dense , causing it to rise and displace the denser colder air at the top , the denser particles then fall and is heated again.


14) Control variable for the investigation measuring rate of evaporation (1): same beaker or same type of beaker, same position in the room. Same thermometer.
Source- http://gcseanswers.co.uk/physics
For a similarity between all liquids and the rate of temperature decreasing, I wrote that all liquids' temperatures decreased at a rate of at least 0.01 C/s over the 200 seconds. (I did the calculation and that was the lowest speed out of all the liquids)And for that second part, I wrote that reducing the liquid didn't evaporate as fast because of it's boiling point. And after that I wrote that if the volume of liquid is less the rate of evaporation would be faste.Are those correct?
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TrumpIsFancy
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For a similarity between all liquids and the rate of temperature decreasing, I wrote that all liquids' temperatures decreased at a rate of at least 0.01 C/s over the 200 seconds. (I did the calculation and that was the lowest speed out of all the liquids)And for that second part, I wrote that reducing the liquid didn't evaporate as fast because of it's boiling point. And after that I wrote that if the volume of liquid is less the rate of evaporation would be faste.Are those correct?
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Aliyah92
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if this is right i got about 13 marks :/ im really counting on C2 to get me a passing grade
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ibte10
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This is not the full paper is it?
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username2437011
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(Original post by ah_x)
Questions & answers: 1. Frequency (1)

2. Reflected sound wave = Echoes

3. Spread out, same as (2)

b) vibrations are parallel to the direction of energy transfer (2)

4. Expensive as National Grid is a long distance away from rural areas (1)

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 (6)

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings(2)

b) properties of microwaves and infra-red radiation (2): can diffract, can refract, travel same speed in vacuum, both transverse waves, can be reflected

calculation questions, 340 m/s for first one (2) then Specific heat capacity 78 degrees(3) , then 6.4 watts(2) then 0.07 degrees/s (2) efficiency question was 0.48 W (2)


6. Fins increase surface area and black matt are good absorbers of heat (2)

7. Cosmic microwave background radiation (1)

b) provides evidence for the big bang theory (1)


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) (2)


11. Why France will still use nuclear power (2) : 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 (2): raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. Factors that affect rate of energy transfer of mug (2): room temperature, surface area.

b) Particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles. (2)


c) how is a convection current formed in the mug(4): liquid at the bottom is heated and particles gain kinetic energy and move away from each other, this makes the liquid less dense , causing it to rise and displace the denser colder air at the top , the denser particles then fall and is heated again.


14) Control variable for the investigation measuring rate of evaporation (1): same beaker or same type of beaker, same position in the room. Same thermometer.
Source- http://gcseanswers.co.uk/physics
Are you sure this is the whole paper?
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sunshine774
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(Original post by ah_x)
Questions & answers: 1. Frequency (1)

2. Reflected sound wave = Echoes

3. Spread out, same as (2)

b) vibrations are parallel to the direction of energy transfer (2)

4. Expensive as National Grid is a long distance away from rural areas (1)

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 (6)

5. inefficient as less or little energy used to heat food as heat is lost as infrared radiation to the surroundings(2)

b) properties of microwaves and infra-red radiation (2): can diffract, can refract, travel same speed in vacuum, both transverse waves, can be reflected

calculation questions, 340 m/s for first one (2) then Specific heat capacity 78 degrees(3) , then 6.4 watts(2) then 0.07 degrees/s (2) efficiency question was 0.48 W (2)


6. Fins increase surface area and black matt are good absorbers of heat (2)

7. Cosmic microwave background radiation (1)

b) provides evidence for the big bang theory (1)


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) (2)


11. Why France will still use nuclear power (2) : 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 (2): raw materials are non- renewable, high decommissioning costs, produces radioactive waste.

13. Factors that affect rate of energy transfer of mug (2): room temperature, surface area.

b) Particles gain kinetic energy and collide more frequently, passing on their extra kinetic energy to other particles. (2)


c) how is a convection current formed in the mug(4): liquid at the bottom is heated and particles gain kinetic energy and move away from each other, this makes the liquid less dense , causing it to rise and displace the denser colder air at the top , the denser particles then fall and is heated again.


14) Control variable for the investigation measuring rate of evaporation (1): same beaker or same type of beaker, same position in the room. Same thermometer.
Source- http://gcseanswers.co.uk/physics
HI for properties of infrared waves and microwaves I wrote they have a long wavelength and low frequency. Would this be correct?
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mariyahx
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how can i get all the equations wrong..
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