Simple Machines

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

work is...

• energy from the sun
• a type of machine
• a force that moves an object
• a force that pulls you toward the earh

Tags

NGSS.MS-PS2-4

Which of these is an example of a wedge?

• skateboard
• broom
• stairs
• butter knife

Which of these is not an example of an inclined plane?

• ladder
• stairs
• wall
• driveway

Which is an example of someone using a simple machine to do work?

• a boy runs across a football field
• a banker counts money
• a mother pushes a stroller up a ramp
• a girl eats a sandwich

The unit of measure for force is _____________

• meters

• joules

• miles per hour

• newtons

True or False. The formula for work is Work = Force x Distance (W= F x D).

• True

• False

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

What is the fixed point upon which a lever rotates?

• fulton
• fulcrum
• furmen
• falcon