Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta

Aqa physics GCSE unit 1 unofficial marks scheme watch

    • Thread Starter
    Offline

    10
    ReputationRep:
    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
    Offline

    1
    ReputationRep:
    if this is right, I lost about 7 marks
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by journey122)
    if this is right, I lost about 7 marks
    That would still be an A* I'm guessing
    Offline

    5
    ReputationRep:
    (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?
    Offline

    5
    ReputationRep:
    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?
    Offline

    1
    ReputationRep:
    if this is right i got about 13 marks :/ im really counting on C2 to get me a passing grade
    Offline

    9
    ReputationRep:
    This is not the full paper is it?
    Offline

    4
    ReputationRep:
    (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?
    Offline

    18
    ReputationRep:
    (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?
    Offline

    3
    ReputationRep:
    how can i get all the equations wrong..
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: May 25, 2016
Poll
Do you like carrot cake?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.