1.
An inclined plane spreads the amount of work needed to move an
object over a larger distance so that less force is needed at any particular
moment.
2.
A wedge is two inclined planes attached to each other. Wedges
make work easier by splitting something when force is applied.
3. A screw is an inclined
plane rolled up. It concentrates the force applied on an object to a smaller
area. It pushes a concentrated amount of force away from the user.
4. A lever allows a weight to
be moved a short distance with a concentrated amount of force.
5. A wheel and axle reduces
the amount of friction an object creates during its motion.
6. A pulley changes the direction
of the force applied and makes work easier.
7. Gears are wheels with
teeth. The teeth of one gear turn another gear. Gears are used to increase or
decrease speed and power.
Answers
