Rand 4th simple mach
| Description: | 4th grade Harcourt Science Unit F Ch 3 Simple Machines |
| Category: | Physical Science |
| Created by: | crandolph on 2007-03-20 |
| Word | Definition |
| effort force | force you put into a simple machine |
| wedge | two inclined planes placed back-to-back |
| simple machines | basic machines that make up other machines |
| work | result of a force moving an object through a distance |
| inclined plane | flat surface that has one end higher than the other |
| fulcrum | fixed point of a lever |
| pulley | rope or chain and the wheel it fits around |
| screw | inclined plane wrapped around a pole |
| lever | bar that turns around a fixed point |
| efficiency | how well a machine changes effort into work |
| wheel and axle | large wheel attached to a smaller wheel or rod |
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