Across
- 4. Different forces ___ act on an object at the same time.
- 7. A machine created by combining two or more simple machines.
- 8. A force that works against the motion of an object causing the object to slow down and/or stop.
- 9. A flat surface that is raised so one end is higher than the other.
- 11. A simple machine used to help lift heavy weights and other objects.
- 12. An inclined plane wrapped around a cylinder or cone.
- 15. A wheel that has a rope wrapped around it and is used to lift heavy objects.
Down
- 1. A machine that changes the direction or size of a force.
- 2. A pulling force that pulls objects toward Earth.
- 3. A scientist who invents and builds things to make life easier.
- 4. Forces between objects can cause a _______ in motion.
- 5. Pushes or pulls that can cause objects to move, stop moving, change speed, or change direction.
- 6. The rod attached to a wheel.
- 10. A stiff bar that moves about a fixed point.
- 13. Wide at one end and pointed at the other, helps cut or split other objects.
- 14. The fixed point of a lever.