Energy Flashcards
What happens when energy is transferred to an object
The energy is stored in one of the objects energy stores
Name 4 ways of energy transferring
Mechanically (a force doing work)
Electrically (work done by moving charges)
Heating (light or sound)
Radiation ‘’
Name 8 energy stores
Thermal Kinetic Gravitational potential Elastic potential Chemical Magnetic Electrostatic Nuclear
What is a system
An object or a group of objects
What happens when a system changes
Energy is transferred
What is another way of saying energy is transferred
Work done
Describe energy transfer when a system is changed in a kettle
Heating
Work is done to the water from the kettle by heating, into the waters thermal energy store
Describe energy transfer when a system is changed when a ball is thrown upwards
Energy transfer from chemical energy store of the arm to the kinetic energy store of the ball
Describe energy transfer when a system is changed when a ball is dropped
Accelerated by gravity, the force does work
It causes work to be done from the gravitational potential energy store to its kinetic energy store
Describe energy transfer when a system is changed when a car slows down
Work done by forces
From wheels kinetic energy store to the thermal energy store of the surroundings
Describe energy transfer when a system is changed when a car collides with a stationary object
Energy transfer from cars kinetic energy to other energy stores, eg: elastic potential and thermal energy stores of the object
