AQA GCSE PHYSICS PAPER 1 TEST PAPER FULL SOLUTION QUESTIONS AND CORRECT ANSWERS GRADED A+

AQA GCSE PHYSICS PAPER 1 TEST PAPER
FULL SOLUTION QUESTIONS AND
CORRECT ANSWERS GRADED A+

●● Name the seven energy stores
Answer: Kinetic, (internal) Thermal, Chemical, Gravitational Potential,
Elastic Potential, Electrostatic and Magnetic [MICKEE G - to remember
them]


●● What is a closed system?
Answer: Systems were neither matter nor energy can enter or leave. The
net change in the total energy of a closed system is always zero.


●● What does 'doing work' result in?
Answer: A transfer of energy


●● What is the unit of energy?
Answer: Joule


●● List the four ways energy can be transferred between stores?
Answer: By mechanical work, by electrical work, by heating, by
radiation

,●● What is the conservation of energy principle?
Answer: Energy can be transferred usefully, stored or dissipated, but can
never be created or destroyed


●● What is energy dissipation?
Answer: When energy is not transferred usefully but is wasted (often as
thermal energy)


●● What is the equation linking kinetic energy, mass and velocity
Answer: 0.5 x mass x (velocity squared)


●● What are the units for velocity?
Answer: Meters per second (m/s)


●● What are the units for mass?
Answer: Kilograms (kg)


●● What is the equation linking elastic potential energy, the spring
constant and extension?
Answer: 0.5 x spring constant x (extension squared)


●● What are the units for the spring constant?
Answer: Newtons per metre (N/m)

,●● What are the units for extension?
Answer: Metres (m)


●● What is the equation linking gravitational potential energy, mass,
gravity and height?
Answer: Mass x gravitational field strength x height [Ep=mgh]


●● What are the units for gravitational field strength?
Answer: Newtons per kg (N/kg)


●● What are the units for height?
Answer: Meters (m)


●● What is conduction?
Answer: The process by which vibrating particles transfer energy to
neighbouring particles


●● What is thermal conductivity?
Answer: Are measure of how quickly energy is transferred through a
material by conduction


●● What is convection?

, Answer: Were energetic particles move away from a hotter to cooler
regions


●● What does the symbol ∆ mean?
Answer: Change


●● What is specific heat capacity of a substance?
Answer: The amount of energy required to raise the temperature of 1 kg
of the substance by 1° Celsius


●● What are the units for specific heat capacity?
Answer: Joules per kilogram per ° C (Jk/kg/°C)


●● What is power?
Answer: The rate at which energy is transferred or the rate at which
work is done if


●● What is the unit of power?
Answer: Watts (W)


●● What is the equation linking power, energy and time?
Answer: Power = energy transferred/time [P=E/t]