Read and understand the questions. Encircle the letter of the correct answer.

1.A ___ is a mechanical device that charges the direction or magnitude of a force.
a.simple machine b.machines c.both a and b

2.It is used lift or lower heavy objects.
a.pulley b.inchined plane c.wedge

3.Made up of a straight rigid objects like a board or a bar which pivots on a fulerum.
a.wedge b.lever c.pulley

4.A simple machine used for raising, holding or splitting objects apart is ___.
a.screw b.wheel and axle c.wedge

5.A spiral wrapped around a center post, that when it is turned, it can lift objects or hold two objects together.
a.screw b.lever c.wheel and axle​