Simple Machines

Work is done when .....

• a force is exerted on an object.

• an object exerts force onto another object.

• a force is exerted on an object causing the object to move.

• an object does not move.

Tags

NGSS.HS-PS2-1

An ax head is a simple machine called a wedge. How can you make the cutting edge more efficient?

• make it longer

• make it shorter

• make sharper

• make it more rounded

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-4

How can you make an inclined plane more efficient?

• cover it with a rough material

• make it face the opposite direction

• increase the height

• increase the length

Tags

NGSS.MS-ETS1-1

Which ramp will require the least amount of force?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

_____________ are a sloping surface.

• pulleys

• inclined planes

• levers

• wheel and axles

Tags

NGSS.MS-PS2-2

A lever rotates on a fixed point called a _______________

• screw

• wheel

• ramp

• fulcrum

wheelbarrows, fishing rods and baseball bats are all examples of ________________

• inclined planes

• wedges

• levers

• compound machines

If you needed to use a lever to move a heavy object, where is the best place to place the load?

• next to where the force is applied

• directly under the fulcrum

• opposite end of the fulcrum

• near the fulcrum.

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

Which of these is an example of a wedge?

• skateboard
• broom
• stairs
• butter knife