Simple & Compound Machines Test

How many simple machines are there ?

• three

• five

• seven

• six

What is a machine ?

• electrical gadgets with a motor

• complex gadgets

• any device that let's you do work in an easier or better way

Machines make easier by changing what three things ?

• force, work and load

• amount of force, distance over which you exert force ,and direction in which you exert force

• force, work done ,and lifting

Tags

NGSS.MS-ETS1-1

What are the six simple machines ?

• lever, screw , wedge ,pulley ,wheel and axle ,and inclined plane

• level ,pulley ,screw, hammer ,wedge and wheel

• pulley ,wheel ,screw ,inclined plane ,wheel ,and axle

What are compound machines made of ?

• two machines

• combinations of two or more simple machines

What machine is a seat belt an example of ?

• pulley

• level

• inclined plane

• wheel and axle

How many classes of levers are there ?

• three

• five

• seven

• nine

Scissors are an example of which class of lever ?

• first

• second

• third

What class of levers is baseball bats

• third

• second

• first

What machine is an zipper an example of ?

• wedge

• pulley

• wheel and axle