AQA GCSE TRIPLE PHYSICS EXAM QUESTIONS AND ANSWERS ALREADY GRADED A+
P1 1) Give 5 ways energy can be stored? - answer Chemical energy, kinetic energy, gravitational potential energy, elastic potential energy and thermal energy,
P1 2) What is chemical energy stores? - answer Energy transferred...
AQA GCSE TRIPLE PHYSICS EXAM
QUESTIONS AND ANSWERS ALREADY
GRADED A+
P1 1) Give 5 ways energy can be stored? - answer Chemical energy, kinetic energy, gravitational
potential energy, elastic potential energy and thermal energy,
P1 2) What is chemical energy stores? - answer Energy transferred during chemical reactions.
Stores include fuels, foods or chemicals found in batteries.
P1 3) What is kinetic energy stores? - answer Energy stored in an object because it is moving
P1 4) What is gravitational potential energy? - answer Energy stored in an object because of its
position above the ground.
P1 5) What is elastic potential energy? - answer Energy stored in a springy object when you
stretch or squash it.
P1 6) What is thermal energy? - answer A store of energy a substance has because of its
temperature
P1 7) What are the energy changes in a torch lamp? - answer Chemical energy in battery à
electric current in wires à energy transferred to surrounding (light and thermal)
P1 8) How can you represent energy changes? - answer Flow diagram
P1 9) What are the energy transfers in an object as it falls? - answer Gravitational potential
energy store à kinetic energy store à energy transfer to the surroundings (thermal energy and
sound waves)
,P1 10) What is a system? - answer An object or group of objects
P1 11) What is a closed system? - answer A system in which no energy transfers take place our
of or into the energy stores of the system.
P1 12) What is the principle of conservation of energy? - answer Energy cannot be destroyed or
created.
P1 13) What is energy measured in? - answer Joules (J)
P1 14) What is work done? - answer Work is done on an object when a force makes the object
move. Energy transferred = work done
P1 15) What is work done measured in? - answer Joules (J)
P1 16) How do you work out work done? - answer Work done, W (J) = force applied, F (N) x
distance moved along the line of the force, s (m)
P1 17) What happens to work done to overcome friction? - answer Mainly transferred to
thermal energy stores of the objects that rub together and to the surroundings.
P1 18) A builder pushed a wheelbarrow a distance of 5m across flat ground with a force of 50N.
How much work was done by the builder? - answer 250J
P1 19) What happens to the gravitational potential energy stores when an object moves up? -
answer It increases
P1 20) What happens to the gravitational potential energy stores when an object moves down?
- answer It decreases
, P1 21) How do we calculate change in object's gravitational potential energy store with weight?
- answer Change in object's gravitational potential (J) = weight (N) x change of height (m)
P1 22) How do we calculate change in object's gravitational potential energy store with mass? -
answer Change of gravitational potential (J) = mass, m (kg) x gravitational field strength, g (N/Kg)
x change of height (m)
P1 23) Why is it easier to lift objects on the moon? - answer Gravitational field strength of moon
about a sixth of gravitational field strength on earth.
P1 24) A student of weight 300N climbs on a platform that is 1/2m higher than the floor.
Calculate the increase in her gravitational potential energy store? - answer 360J
P1 25) A 2kg object is raised through a heigh of 0.4m. Calculate the increase in the gravitational
potential energy store of the object. The gravitational field strength of the Earth at its surface is
9.8N/kg. - answer 7.8J
P1 26) What does the amount of energy in a kinetic energy store depend on? - answer Its mass
and speed
P1 27) How do we work out kinetic energy? - answer Kinetic energy (J) =1/2 x mass (kg) x speed²
P1 28) How do you calculate the amount of energy in an elastic potential energy store? - answer
Elastic potential energy (J) = ½ x spring constant (N/m) x extension²
P1 29) Calculate the kinetic energy stored in a vehicle of mass 500kg moving at a speed of
12m/s - answer 36000J
P1 30) What is useful energy? - answer Energy transferred to where it is wanted in the way it is
wanted
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