AQA-GCSE COMBINED SCIENCE: TRILOGY
8464/P/1F PHYSICS PAPER 1 LATEST 2025-2026
UPDATE QUESTIONS AND ANSWERS
Power - Answer-The rate at which work is done (watts). P(w) = E(j) /
t(s)
Powerful machine - Answer-One which transfers a lot of energy in a
short space of time
Conduction occurs mainly in solids - Answer-Conduction is the process
where vibrating particles transfer energy to neighbouring particles.
Long definition of conduction - Answer-Energy transferred to an object
by heating is transferred to the thermal store, which is shared across the
kinetic store of the particles. The particles' collisions cause energy to be
transferred between particles kinetic energy stores.
thermal conductivity - Answer-the Mrs sure of the rate at which thermal
energy can travel through a material
Convection occurs only in liquids and gases - Answer-Convection is
where energetic particles move away from hotter to cooler regions
, Convection longer definition - Answer-Unlike in solids, the particles in
liquids and gases are able to move. When you heat a region of a
gas/liquid, the particles move faster and the space between particles
increases. This causes the density of the region to decrease. Because
they can flow, the warmer and less dense region will rise above denser
cooler regions. If there is a constant heat source, a convection current
will be made
Radiators - convection currents - Answer-Energy is transferred from the
radiator to nearby air particles by conduction. The air by the radiator
becomes warmer and less dense. This warm air rises and is replaced by
cooler air. At the same time, the previously heated air transfers energy to
the surrounding and cools, becomes denser, and sinks. This cycle repeats
and causes a flow of air to circulate around the room
How to reduce unwanted energy transfers - Answer-Lubrication and
thermal insulation
Lubrication reduces frictional forces - Answer-When something moves,
there's at least one frictional force acting on it, causing some energy to
be dissipated. For objects that are rubbed together, lubricants reduce the
fiction between the object's surfaces when moved. Lubricants tend to be
liquids (like oil) to flow easily between objects and coat them
Insulation reduces the rate of energy transfer by heating - Answer-
Things to do to prevent energy loss through heating...
- have think walls made from low thermal conductivity material. This
makes the rate of energy transfer slower, so the building will cool more
slowly.
, - use thermal insulation
Thermal insulation examples - Answer-- cavity walls made of an inner
and outer wall with an air gap in between to reduce the amount of
energy transferred by conduction.
- loft insulation can reduce convection currents created in lofts
- double glazed windows have an air gap between two layers of glass to
prevent energy transfer by conduction
- draught excluders around doors and windows reduce energy transfers
by convection
Most energy transfers involve some waste energy - Answer-Efficiency
= useful output energy transfer / total input energy transfer OR
efficiency = useful power output / total power input
Non renewable energy resources will one day run out - Answer-Fossil
fuels and nuclear fuels. Fossil fuels are typically burnt to provide coal,
oil, and natural gas. They damage the environment but provide most of
our energy
Renewable energy resources will never run out - Answer-These are: the
sun, wind, water waves, hydro-electricity, bio-fuel, tides, geothermal.
Most of them do damage to the environment, but in less nasty ways than
non renewables. However, they don't provide much energy and some are
unreliable as they depend on the weather
8464/P/1F PHYSICS PAPER 1 LATEST 2025-2026
UPDATE QUESTIONS AND ANSWERS
Power - Answer-The rate at which work is done (watts). P(w) = E(j) /
t(s)
Powerful machine - Answer-One which transfers a lot of energy in a
short space of time
Conduction occurs mainly in solids - Answer-Conduction is the process
where vibrating particles transfer energy to neighbouring particles.
Long definition of conduction - Answer-Energy transferred to an object
by heating is transferred to the thermal store, which is shared across the
kinetic store of the particles. The particles' collisions cause energy to be
transferred between particles kinetic energy stores.
thermal conductivity - Answer-the Mrs sure of the rate at which thermal
energy can travel through a material
Convection occurs only in liquids and gases - Answer-Convection is
where energetic particles move away from hotter to cooler regions
, Convection longer definition - Answer-Unlike in solids, the particles in
liquids and gases are able to move. When you heat a region of a
gas/liquid, the particles move faster and the space between particles
increases. This causes the density of the region to decrease. Because
they can flow, the warmer and less dense region will rise above denser
cooler regions. If there is a constant heat source, a convection current
will be made
Radiators - convection currents - Answer-Energy is transferred from the
radiator to nearby air particles by conduction. The air by the radiator
becomes warmer and less dense. This warm air rises and is replaced by
cooler air. At the same time, the previously heated air transfers energy to
the surrounding and cools, becomes denser, and sinks. This cycle repeats
and causes a flow of air to circulate around the room
How to reduce unwanted energy transfers - Answer-Lubrication and
thermal insulation
Lubrication reduces frictional forces - Answer-When something moves,
there's at least one frictional force acting on it, causing some energy to
be dissipated. For objects that are rubbed together, lubricants reduce the
fiction between the object's surfaces when moved. Lubricants tend to be
liquids (like oil) to flow easily between objects and coat them
Insulation reduces the rate of energy transfer by heating - Answer-
Things to do to prevent energy loss through heating...
- have think walls made from low thermal conductivity material. This
makes the rate of energy transfer slower, so the building will cool more
slowly.
, - use thermal insulation
Thermal insulation examples - Answer-- cavity walls made of an inner
and outer wall with an air gap in between to reduce the amount of
energy transferred by conduction.
- loft insulation can reduce convection currents created in lofts
- double glazed windows have an air gap between two layers of glass to
prevent energy transfer by conduction
- draught excluders around doors and windows reduce energy transfers
by convection
Most energy transfers involve some waste energy - Answer-Efficiency
= useful output energy transfer / total input energy transfer OR
efficiency = useful power output / total power input
Non renewable energy resources will one day run out - Answer-Fossil
fuels and nuclear fuels. Fossil fuels are typically burnt to provide coal,
oil, and natural gas. They damage the environment but provide most of
our energy
Renewable energy resources will never run out - Answer-These are: the
sun, wind, water waves, hydro-electricity, bio-fuel, tides, geothermal.
Most of them do damage to the environment, but in less nasty ways than
non renewables. However, they don't provide much energy and some are
unreliable as they depend on the weather
