Simple Machines

The unit of measure for force is _____________

• meters

• joules

• miles per hour

• newtons

Force is measured with a _________________

• barometer

• hygrometer

• spring scale

• meter stick

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

A boy uses this simple machine to lift a load. How does this machine help the boy to do work?

• by changing the direction

• by reducing total work

• by decreasing distance

• by reducing effort force

Tags

NGSS.MS-ETS1-1

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

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

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

• ramp

• inclined plane

• pulley

• lever

What simple machine has a wheel with a groove on it that keeps a rope in place?

• pulley
• lever
  lever
• screw
  wedge
• wedge
  screw