GCSE PHYSICS (AQA) QUESTIONS AND ANSWERS
P1 - answer
energy - answer The ability to do work
energy store - answer a form of energy
kinetic energy - answer energy which a body possesses by virtue of being in motion
gravitational potential energy - answer energy an object possesses be...
GCSE PHYSICS (AQA) QUESTIONS AND
ANSWERS
P1 - answer
energy - answer The ability to do work
energy store - answer a form of energy
kinetic energy - answer energy which a body possesses by virtue of being in motion
gravitational potential energy - answer energy an object possesses because of its position in a
gravitational field
thermal energy - answer the internal energy present in a system due to its temperature
elastic potential energy - answer the energy stored in elastic materials as the result of their
stretching or compressing
emit - answer to give off or send out
absorb - answer to take in
conservation of energy - answer The principle that energy cannot be created or destroyed
closed system - answer A system in which energy, but not matter, is exchanged with its
surroundings.
,pendulum - answer A hanging mass that swings back and forth when pulled to one side and let
go.
work - answer (joules, J) Force x Distance, the exertion of force overcoming resistance or
producing molecular change
joules - answer the SI unit of work or energy, equal to the work done by a force of one newton
when its point of application moves one metre in the direction of action of the force
force - answer (newtons, N) A push or a pull
Newtons - answer the SI unit of force. It is equal to the force that would give a mass of one
kilogram an acceleration of one metre per second per second
kilograms - answer the SI unit of mass, equivalent to the international standard kept at Sèvres
near Paris
mass - answer (kilograms, kg) the quantity of matter which a body contains
weight - answer (newtons, N) the force exerted on the mass of a body by a gravitational field.
metres - answer (m) a measure of distance or displacement.
time - answer (seconds, s) the indefinite continued progress of existence and events that occur
in apparently irreversible succession from the past through the present to the future.
unit - answer standards for measurement of physical quantities that need clear definitions to be
useful
, precision - answer refers to the closeness of two or more measurements to each other
accuracy - answer the degree of closeness of measurements of a quantity to that quantity's true
value.
friction - answer the resistance that one surface or object encounters when moving over
another.
gravitational field strength - answer (g) The force per unit mass experienced by a mass placed in
a gravitational field.
speed - answer (meters/second, m/s) The distance an object travels per unit of time, Distance /
Time
spring constant - answer (k) a parameter that is a measure of a spring's resistance to being
compressed or stretched
useful energy - answer Energy converted by a device into the form(s) the device was designed
for.
wasted energy - answer Energy converted by a device into the form(s) the device was NOT
designed for.
dissipate - answer to spread out and become less concentrated
efficiency - answer The percentage of the input work that is converted to output work. = useful
output energy supplied by device (J) / total input energy of the device (J) x 100
order of magnitude - answer estimate of quantity to the nearest power of ten
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