- Lubricant: A substance that allows two surfaces to slide easily over one another.
- Machine: Something that does work for us by using forces.
- Mass: The measure of how much matter is in an object.
- Motion: Movement.
- Potential energy: Energy that is stored in an object when you prepare it to move and leave it to rest in this position.
- Pulley: A simple machine that makes it easier to lift an object. It is made from a wheel that something like rope is wrapped around.
- Speed: How fast an object covers a distance.
- Weight: The force of gravity on an object pulling it towards the Earth.
- Windmill: A tower with large blades, which are pushed by the wind converting the movement of wind into energy to be used to do work.
Parent Tip: Review the logic above to help your child master the concept of force and motion dictionary.
