Chapter 7 Science Test
Terms
undefined, object
copy deck
- A slanted surface used to raise an object
- an inclined plane
- A device that does work with only one movement
- simple machine
- a bar that is free to pivot about a fixed point
- a lever
- The rate at which work is done
- power
- The amount which a machine multiplies an effort force is called
- mechanical advantage
- An inclined plane with one or two sloping sides is called a
- wedge
- An incline plane wrapped around a cylinder post is a
- screw
- When two or more simple machines work together, this is a
- compound machine
- A joule is equal to....
- one newton times one meter
- A doorknob is an example of a simple machine known as a
- wheel and axle
- The pivot point of a lever is called the
- fulcrum
- The force you apply to a simple machine
- effort force
- The force you overcome when using a simple machine
- resistance force
- The ability of a machine to convert work input into work output
- efficiency