Simple Machines
Across
- 4. a sloping ramp up which heavy loads can be raised by ropes or chains
- 7. the branch of science concerned with the nature and properties of matter and energy.
- 8. the systematic study of the structure and behavior of the physical and natural world through observation, experimentation, and the testing of theories against the evidence obtained.
- 9. a rod or spindle (either fixed or passing through the center of a wheel or group of wheels.
Down
- 1. a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim.
- 2. Simple ________
- 3. a 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.
- 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.
- 6. a circular object that revolves on an axle and is fixed below a vehicle or other object to enable it to move easily over the ground.
- 8. ________ Machine