AQA GCSE PHYSICS ENERGY ACTUAL TEST
QUESTIONS AND ACCURATE ANSWERS
COMPLETE REVIEW SHEET
●● When energy is transferred to an object, where is it stored?
Answer: In one of the objects energy stores
●● What are the 8 energy stores?
Answer: Thermal
Chemical
Kinetic
Elastic Potential
Gravitational Potential
Nuclear
Magnetic
Electrostatic
●● What are the four ways energy can be transferred?
Answer: mechanically
electrically
by heating
,by radiation
●● What is a system?
Answer: An object or group of objects that you're interested in
●● What happens when a system changes?
Answer: Energy is transferred
●● How can a system change?
Answer: Energy can be transferred into or away from the system,
between different objects in a system or between different types of
energy stores within the system
●● What is a closed system?
Answer: A system where neither matter nor energy can enter or leave
●● What is the net change of total energy in a closed system?
Answer: Always zero
●● Describe the energy transfers in a kettle:
Answer: energy is transferred electrically to the thermal energy store of
the kettle's heating element, which transfers by heating to the water's
thermal energy store
, ●● What is another way of saying energy transferred?
Answer: work done
●● How can work be done?
Answer: when a current flows or by a force moving an object
●● Describe and explain the work done in a person throwing a ball:
Answer: initial force exerted by the person to throw the ball does work
energy is transferred from the chemical energy store of the person's arm
to the kinetic energy store of the ball and arm
●● Describe and explain the work done when dropping a ball from a
height:
Answer: ball accelerates due to gravitational force which does work
causes energy to be transferred from the ball's gravitational potential
energy store to the ball's kinetic energy store
●● Describe and explain the work done when braking in a car:
Answer: The friction between the car's brakes and tires does work as it
slows the car
QUESTIONS AND ACCURATE ANSWERS
COMPLETE REVIEW SHEET
●● When energy is transferred to an object, where is it stored?
Answer: In one of the objects energy stores
●● What are the 8 energy stores?
Answer: Thermal
Chemical
Kinetic
Elastic Potential
Gravitational Potential
Nuclear
Magnetic
Electrostatic
●● What are the four ways energy can be transferred?
Answer: mechanically
electrically
by heating
,by radiation
●● What is a system?
Answer: An object or group of objects that you're interested in
●● What happens when a system changes?
Answer: Energy is transferred
●● How can a system change?
Answer: Energy can be transferred into or away from the system,
between different objects in a system or between different types of
energy stores within the system
●● What is a closed system?
Answer: A system where neither matter nor energy can enter or leave
●● What is the net change of total energy in a closed system?
Answer: Always zero
●● Describe the energy transfers in a kettle:
Answer: energy is transferred electrically to the thermal energy store of
the kettle's heating element, which transfers by heating to the water's
thermal energy store
, ●● What is another way of saying energy transferred?
Answer: work done
●● How can work be done?
Answer: when a current flows or by a force moving an object
●● Describe and explain the work done in a person throwing a ball:
Answer: initial force exerted by the person to throw the ball does work
energy is transferred from the chemical energy store of the person's arm
to the kinetic energy store of the ball and arm
●● Describe and explain the work done when dropping a ball from a
height:
Answer: ball accelerates due to gravitational force which does work
causes energy to be transferred from the ball's gravitational potential
energy store to the ball's kinetic energy store
●● Describe and explain the work done when braking in a car:
Answer: The friction between the car's brakes and tires does work as it
slows the car
