Physics (Conservation of energy)

test year 9

What does the principle of energy tell us?

Energy cannot be created or destroyed and only transformed

What are the main types of wasted energy?

Thermal (heat), sound and light energy

What is the formula for kinetic energy ?

5.0KE = ½ mv squared ( kinetic energy = 0.5 x mass x velocity x velocity)

energy is measured

in Joules

Elastic energy

stretched e.g rubber bands

chemical energy

stored e.g fossil fuels

vibration energy

states of matter

gravity energy

height

kinetic energy

moving

thermal energy

heat

nuclear energy

radiation

electric and magnetic

light

energy pathways

electric pathway, mechanical pathways, heating by particle movement, heating by radiation - including radiation we can happen to be able to see.