Cap 10 machines

A ramp is a type of ______.

• is another kind of lever.

• is a flat surface that is higher at one end.

• is an example of a simple machine.

• is often used to make work easier

compound machine

• when you put two or more simple machines together.

• is a flat surface that is higher at one end.

• is an example of a simple machine.

• is often used to make work easier

Which is a true statement about work?

• work takes money

• work takes a long time

• work changes an object's size

• work changes an object's position

a lever moves back and forth on a(n) ______

• fulcrum

• straight bar

• axle

• ramp

What simple machine is shown in the diagram?

• wheel and axle

• screw

• inclined plane

• lever

Which simple machine lets a roller skate roll?

• a screw

• a pulley

• an inclined plane

• a wheel and axle

A pair of scissors is a compound machine. What two simple machines make up a pair of scissors

• wheel and axle, and lever

• lever and wedge

• lever and pulley

• pulley and wedge

When you use a force to change the motion of an object, you do ___

• compound machine

• work

• energy

• screw

The ability to do work is called______.

• compound machine

• work

• energy

• screw

The simple machine with a fulcrum, load, and force is a(n)_____.

• compound machine

• lever

• energy

• screw