Across
- 5. Force - force applied to operate a machine.
- 7. - force that opposes motion.
- 9. - device that helps us do work.
- 11. machines - system in which simple machines all work together; parts of a complex machine that have just one function are called subsystems and often contain a simple machine.
- 15. - special type of linkage for transferring the energy from the engine to the wheels in large vehicles such as cars and trucks.
- 18. - measure of the amount of force applied to a given area; as an equation p=F/A, where p is pressure, F is force and A is area; measured in pascals (Pa).
- 20. - simple machine that consists of a cylinder with a groove cut in a spiral on the outside.
- 22. and Axle - simple machine made up of two wheels of different diameters that turn together; a longer motion on the wheel produces a shorter but more powerful motion at the axle.
- 23. - belt or chain to transfer energy from an energy source to an object (like a bicycle chain)
- 24. Pulley - fastened to one spot and does not move. It does not offer an increase in force. Movable Pulley - a movable pulley moves along a rope or wire. If the rope is anchored pulling on the rope will provide a gain in force. (x2)
Down
- 1. Force - force a machine applies to an object.
- 2. - pair of wheels the teeth interlink; when they rotate together; one gearwheel transfers turning motion and force to the other.
- 3. - measurement of how well a machine or device uses energy; can be calculated by dividing mechanical advantage by speed ratio or by dividing work output by work input.
- 4. - the amount of space between two things.
- 6. Advantage - amount by which a machine can multiply a force; calculated by dividing the output force by the input force.
- 8. - The international system of units that measures force. It is named after Isaac Newton for his work on Mechanics.
- 10. - (of a machine) smaller group of parts within a complex machine that performs a specific function.
- 11. Pulley - also known as a block and tackle, is a combination of fixed and movable pulleys. This pulley changes directions as well as increases force.
- 12. - used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.
- 13. machine - tool or device made up of one basic machine.
- 14. Ratio - measure of how the speed of the object is affected by a machine; calculated by dividing the input by the output distance.
- 16. - simple machine made up of wire, rope, or cable moving on a grooved wheel; may be made up of one or many wheels; can be fixed in place or moveable.
- 17. - simple machine that looks like an inclined plane, but is forced into an object.
- 19. - (in context of machine) a group of parts that work together to perform a general function, forming a complex machine.
- 21. - done when a force acts on an object to make the object move; calculated by multiplying force times distance.