You need to know how simple machines such as level inclined planes, screws, wheels and axles, and wedges are found in common tools.
WHAT I KNOW: Write TRUE if the statement is correct or FALSE if it is incorrect.
1. A simple machine allows us to apply a smaller force over a larger distance to move an object.
2. A wheel and axle move objects to a greater distance by increasing the force applied.
3. A wedge is a simple machine that consists of two inclined planes, giving it a thin edge and a thick end.
4. A lever can be designed to reduce the amount of force required to lift a weight.
5. Pulleys can change the amount and direction of the force applied (effort force).
6. To reduce the amount of force required to move an object, an inclined plane is used.
7. A screw has a circular disk or frame turning on a central axis.
8. In all levers, the fulcrum is placed only in one location along the bar.
9. Wedges are used to cut or split objects apart.
10. The simple machines are lever, screw, pulley, and wedge only.