8Y+Jacob

__**Key word definitions:**__ **Wheel/Axle:** A wheel and axle is a machine that has a rope that unwinds onto an axle to spin a wheel. **Inclined Plane:** A ramp that is on a slope. **Wedge:** A piece of wood that can be put through two pieces to create a gap for other things to be put through or to stop it from moving. **Screw:** A piece of metal that is thin and can be used to hold things in place. **Lever:** A bar with a pivot point to help the user apply more force then they need to give out. **Pulley:** A rope tied around a circle that can be pulled on to pick things up on the other side of the rope. **Gears:** A gear connects with other gears to add more force which then makes something change. **Energy:** The strength required to sustain a certain type of pressure. **Force:** How much pressure is applied to make something happen. **Mass:** The mass is the quantity of an object and the space it takes. **Weight:** The amount of force required to do a certain thing.