AQA GCSE COMBINED SCIENCE FINAL
PAPER 2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ Water power.
Answer: Lots of small wave-powered turbines around the coast. The
moving turbines are connected to a generator
◉ Water power advantages.
Answer: There is no pollution, no fuel costs and minimal running
costs. Can be useful on small islands
◉ Water power disadvantages.
Answer: It disturbs the seabed and the marine animals' haibitats.
Spoils the view, hazard to boats, fairly unreliable, initial costs are
high
◉ Tidal barrages.
Answer: Tidal barrages are big dams across river estuaries, with
turbines in them. As the tide comes in the estuary gets filled up. The
water is then allowed out through turbines at a controlled speed.
Tides are produced by the gravitational pull of the moon and sun
,◉ Tidal barrages advantages.
Answer: There is no pollution, pretty reliable as they always happen
twice a day, no fuel floats and minimal running costs
◉ Tidal barrages disadvantages.
Answer: It prevents free access for boats. Spoils the view, and alters
habitat, the height of the tide is variable, initial costs are moderately
high
◉ Bio-fuels.
Answer: These are renewable energy resources created from plant
products or animal dung. They can be solid, liquid, or gas and can be
burnt to produce electricity or run cars in a similar way to fossil
fuels
◉ Biofuel advantages.
Answer: They are fairly reliable as crops take a relatively short time
to grow and some crops can grow all year round.
◉ Biofuel disadvantages.
Answer: They can't respond to immediate energy demands - to
combat this, biofuels are continuously produces and stored. The cost
to refine them is very high. Sometimes large areas of forest have
been cleared for room to grow bio-fuels, resulting in species losing
,their natural habitats. The decay and burning of this vegetation
increases CO2 and Meghan emissions
◉ Non-renewable resources are reliable.
Answer: There is enough fossil and nuclear fuels to meet current
demand, and are extracted from the earth fast enough that power
plants always have fuel, meaning they can respond quickly to
demand. However, they are slowly running out. While the set up
costs of power plants is high, the running costs aren't expensive.
◉ nonrenewable resources create environmental problems.
Answer: Coal, oil, and gas release CO2 when burned which adds to
the greenhouse effect and contributes to global warming. Burning
coal and oil release sulfur dioxide, leading to acid rain. Power plants
spoil view. Oil spillage cause serious environmental problems,
affecting animals.
◉ Currently we still depend on fossil fuels.
Answer: In the 20th century, The electricity use of the uk massively
increased as the population grew. Since the start of the 21st century,
it is slowly decreasing as we get better at being more efficient and
careful. Most of our electricity is produced using fossil fuels. We are
trying to increase our use of renewable energy resources. This move
to renewable energy has been triggered by...
, ◉ People want to use more renewable energy resources.
Answer: We went to do less harm to the environment as we are
aware of the consequences. We are aware non renewables will one
day run out. Car companies have been affected by this change in
attitude. Electric cared and hybrids are already being sold and their
popularity is growing
◉ The use of renewables is limited by reliability, money, and politics.
Answer: Although scientists can advise, they don't have the power to
make people change their behaviour. Building renewable power
plants is expensive and so some energy providers are reluctant to do
this. They might not be reliable , meaning more research would have
to be done. Making personal changes can be expensive - hybrid cars
are expensive as are solar panels
◉ Charge flow =.
Answer: Current x time
◉ What is current.
Answer: The flow of electric charge (amps)
◉ What is resistance.
Answer: Any thing that slows the flow down
PAPER 2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS
◉ Water power.
Answer: Lots of small wave-powered turbines around the coast. The
moving turbines are connected to a generator
◉ Water power advantages.
Answer: There is no pollution, no fuel costs and minimal running
costs. Can be useful on small islands
◉ Water power disadvantages.
Answer: It disturbs the seabed and the marine animals' haibitats.
Spoils the view, hazard to boats, fairly unreliable, initial costs are
high
◉ Tidal barrages.
Answer: Tidal barrages are big dams across river estuaries, with
turbines in them. As the tide comes in the estuary gets filled up. The
water is then allowed out through turbines at a controlled speed.
Tides are produced by the gravitational pull of the moon and sun
,◉ Tidal barrages advantages.
Answer: There is no pollution, pretty reliable as they always happen
twice a day, no fuel floats and minimal running costs
◉ Tidal barrages disadvantages.
Answer: It prevents free access for boats. Spoils the view, and alters
habitat, the height of the tide is variable, initial costs are moderately
high
◉ Bio-fuels.
Answer: These are renewable energy resources created from plant
products or animal dung. They can be solid, liquid, or gas and can be
burnt to produce electricity or run cars in a similar way to fossil
fuels
◉ Biofuel advantages.
Answer: They are fairly reliable as crops take a relatively short time
to grow and some crops can grow all year round.
◉ Biofuel disadvantages.
Answer: They can't respond to immediate energy demands - to
combat this, biofuels are continuously produces and stored. The cost
to refine them is very high. Sometimes large areas of forest have
been cleared for room to grow bio-fuels, resulting in species losing
,their natural habitats. The decay and burning of this vegetation
increases CO2 and Meghan emissions
◉ Non-renewable resources are reliable.
Answer: There is enough fossil and nuclear fuels to meet current
demand, and are extracted from the earth fast enough that power
plants always have fuel, meaning they can respond quickly to
demand. However, they are slowly running out. While the set up
costs of power plants is high, the running costs aren't expensive.
◉ nonrenewable resources create environmental problems.
Answer: Coal, oil, and gas release CO2 when burned which adds to
the greenhouse effect and contributes to global warming. Burning
coal and oil release sulfur dioxide, leading to acid rain. Power plants
spoil view. Oil spillage cause serious environmental problems,
affecting animals.
◉ Currently we still depend on fossil fuels.
Answer: In the 20th century, The electricity use of the uk massively
increased as the population grew. Since the start of the 21st century,
it is slowly decreasing as we get better at being more efficient and
careful. Most of our electricity is produced using fossil fuels. We are
trying to increase our use of renewable energy resources. This move
to renewable energy has been triggered by...
, ◉ People want to use more renewable energy resources.
Answer: We went to do less harm to the environment as we are
aware of the consequences. We are aware non renewables will one
day run out. Car companies have been affected by this change in
attitude. Electric cared and hybrids are already being sold and their
popularity is growing
◉ The use of renewables is limited by reliability, money, and politics.
Answer: Although scientists can advise, they don't have the power to
make people change their behaviour. Building renewable power
plants is expensive and so some energy providers are reluctant to do
this. They might not be reliable , meaning more research would have
to be done. Making personal changes can be expensive - hybrid cars
are expensive as are solar panels
◉ Charge flow =.
Answer: Current x time
◉ What is current.
Answer: The flow of electric charge (amps)
◉ What is resistance.
Answer: Any thing that slows the flow down
