Forces
Something that changes an object's motion or rest
Force
Energy in motion
Kinetic energy
Energy transfer
A force of two objects rubbing together
Friction
Stored energy, what an object could do
Potential energy
Energy you see from the sun, a lamp, or a flame
Light energy
A force that pulls objects down toward Earth
Gravity
Feeling a surface that has become warm
Heat energy
Energy you feel from an engine or a light bulb
Heat energy
When two or more objects hit each other
Collision
Energy produced by vibrations that you hear
Sound energy
Energy heard from a radio
Sound energy