Chapter 2.4 (Simple machines)

Question 1

Simple machines make moving objects a lot easier, with less effort.

True or False

Answer 1

True

Question 2

Is the simplest machine of all. It is a long, straight or folded bar that can life a load on one of its end while applying a little physical force or effort on the other end.

Answer 2

Lever

Question 3

Is any surface, flat or jagged, that is sloping at an angle.

Answer 3

Inclined plane

Question 4

Is another kind of simple machine used to push things apart

Answer 4

Wedge

Question 5

Is a simple machine that consists of a wheel with a rod through its center called the axle.

Answer 5

wheel and axle

Question 6

Is a special variation of an inclined plane. It is used to move a load up and down, or is used to press two objects together or to pull them away.

Answer 6

Screw

Question 7

Is a wheel and axle with a rope or chain attached. It can move objects up and makes work easier.

Answer 7

Pulley