Simple Machines Wrap-up

The unit of measure for work is_____________.

• meters

• joules

• newtons

• millibars

Tags

NGSS.HS-PS3-2

A boy adds movable pulley to make a pulley system. What mechanical advantage does a movable pulley provide?

• it provides another wheel for the chain to sit on.

• it will change the direction faster than with 1 fixed pulley

• it will greatly reduce the force needed to lift the load

• it will cause the object to move in the same direction

Tags

NGSS.MS-PS3-2

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

_____________are made up of a grooved wheel with rope/chain running along the groove.

• ramp

• inclined plane

• pulley

• lever

Which model will require the least amount of force?

• pulley 1

• pulley 2

• pulley 3

• pulley 4

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A lever rotates on a fixed point called a _______________

• screw

• wheel

• ramp

• fulcrum

Simple machines can make work easier by reducing the input force needed to move an object. However, there is a trade off for decreased input. What is the trade off?

• The distance the object is moved is increased.

• The distance the object is moved is decreased.

• The amount of work is increased.

• The amount of work is decreased.

Which ramp will require the least amount of force?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

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.