AQA PHYSICS PAPER I REVISION QUESTIONS &
ANSWERS (DERIVED FROM PAST EXAMS)
GO THROUGH ALL THE QUESTIONS
THOROUGHLY
, Energy is transferred between stores - (answer)Thermal, kinetic, gravitational potential, elastic potential,
chemical, magnetic, electrostatic, nuclear
Energy is transferred... - (answer)Mechanically (by a force doing work), electrically (work done by
moving charges), by heating or by radiation (like light or sound)
When a system changes, energy is transferred - (answer)It can be transferred into or away from the
system, between objects in the system or between different types of energy stores. Closed systems are
where neither matter nor energy can enter or leave. The net change in the total energy of a closed
system is always 0
kinetic energy - (answer)energy of motion - the greater an object's mass and the faster it is going, the
more energy there will be in its kinetic energy store. Ek (j) = 1/2m(kg)v(m/s) squared
Raised objects store energy in gravitational potential energy stores - (answer)lifting an object in a
gravitational field requires work, causing an energy transfer to the the GPE store of the object. Ep(j) =
m(kg)g(n/kg)h(m)
Falling objects transfer energy - (answer)Falling objects transfer energy from its GPE store to its kinetic
energy store. When there's no air resistance, energy lost from the GPE store = energy gained in the
kinetic energy store
Stretching transfers energy to elastic potential energy stores - (answer)As long as the limit of
proportionality has not been exceeded, Ee (j) = 1/2 k (N/m) e (m) squared
specific heat capacity - (answer)the energy required to raise the temperature of one gram of a
substance by one degree Celsius. 🔼E (j) = m(kg) c(j/kgdegree) 🔼theta (degrees Celsius)
Conservation of energy principle - (answer)Energy can be transferred but can never be created of
destroyed
Dissipated energy - (answer)energy used up in a system, typically lost due to work done by friction,
'wasted energy'
Phone energy - (answer)When you use the phone, energy is usefully transferred from the chemical
energy store of the battery in the phone, but some of this energy is dissipated to thermal energy
Closed system energy transfer - (answer)A cold spoon is dropped into hot soup in an insulated flask,
which is then sealed. Energy is transferred from the thermal energy store of the soup to the useless
thermal energy of the spoon
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.
ANSWERS (DERIVED FROM PAST EXAMS)
GO THROUGH ALL THE QUESTIONS
THOROUGHLY
, Energy is transferred between stores - (answer)Thermal, kinetic, gravitational potential, elastic potential,
chemical, magnetic, electrostatic, nuclear
Energy is transferred... - (answer)Mechanically (by a force doing work), electrically (work done by
moving charges), by heating or by radiation (like light or sound)
When a system changes, energy is transferred - (answer)It can be transferred into or away from the
system, between objects in the system or between different types of energy stores. Closed systems are
where neither matter nor energy can enter or leave. The net change in the total energy of a closed
system is always 0
kinetic energy - (answer)energy of motion - the greater an object's mass and the faster it is going, the
more energy there will be in its kinetic energy store. Ek (j) = 1/2m(kg)v(m/s) squared
Raised objects store energy in gravitational potential energy stores - (answer)lifting an object in a
gravitational field requires work, causing an energy transfer to the the GPE store of the object. Ep(j) =
m(kg)g(n/kg)h(m)
Falling objects transfer energy - (answer)Falling objects transfer energy from its GPE store to its kinetic
energy store. When there's no air resistance, energy lost from the GPE store = energy gained in the
kinetic energy store
Stretching transfers energy to elastic potential energy stores - (answer)As long as the limit of
proportionality has not been exceeded, Ee (j) = 1/2 k (N/m) e (m) squared
specific heat capacity - (answer)the energy required to raise the temperature of one gram of a
substance by one degree Celsius. 🔼E (j) = m(kg) c(j/kgdegree) 🔼theta (degrees Celsius)
Conservation of energy principle - (answer)Energy can be transferred but can never be created of
destroyed
Dissipated energy - (answer)energy used up in a system, typically lost due to work done by friction,
'wasted energy'
Phone energy - (answer)When you use the phone, energy is usefully transferred from the chemical
energy store of the battery in the phone, but some of this energy is dissipated to thermal energy
Closed system energy transfer - (answer)A cold spoon is dropped into hot soup in an insulated flask,
which is then sealed. Energy is transferred from the thermal energy store of the soup to the useless
thermal energy of the spoon
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.
