Simple Machines
Across
- 1. a short, slender, sharp-pointed metal pin with a raised helical thread running around it and a slotted head, used to join things together by being rotated so that it pierces wood or other material and is held tightly in place.
- 5. a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.
- 7. piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
- 10. sloping ramp up which heavy loads can be raised by ropes or chains.
Down
- 2. a simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.
- 3. (of a person) move forward on the hands and knees or by dragging the body close to the ground.
- 4. the rate at which someone or something is able to move or operate.
- 6. a vigorous or determined attempt.
- 8. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.
- 9. move slowly and carefully in order to avoid being heard or noticed.