Chapter 1 Vocabulary: Force, Motion, and Energy
Across
- 5. The rod that passes through a wheel at its center and helps steer it.
- 6. A force created when two substances rub against each other (and produces heat).
- 7. A simple machine used to push things apart, wide at one end and pointed at the other to help cut or split objects.
- 9. Forces between objects can cause a _______ in motion.
- 11. A force that pulls objects toward Earth.
- 12. A machine with only one or no moving parts. There are six kinds.
- 13. A push or a pull applied to an object, which will move the object if strong enough.
- 14. A simple machine used to move or turn things.
Down
- 1. A simple machine used to help lift heavy weights and other objects.
- 2. A simple machine used to move objects to a higher or lower place, such as a ramp.
- 3. A simple machine that uses a rope and a wheel with a grooved rim to lift and lower items.
- 4. Different forces ___ act on an object at the same time.
- 8. A scientist who invents and builds things to make life easier.
- 9. A machine created by combining two or more simple machines.
- 10. A spot on which a lever turns or pivots. The stiff bar of a lever rests on this.
- 12. A simple machine used to hold things together, usually in the shape of a cylinder or cone.