Energy & Simple Machines Review

What simple machine has a fulcrum and can be used to lift a weight?

• Pulley
• lever
• screw
• wedge

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

• pulley
• lever
  lever
• screw
  wedge
• wedge
  screw

Which simple machine can a heavy object be rolled or pushed up?

• wheel and axle

• inclined plane

• wedge

• screw

What type of simple machine are these people using to move the wheel chair into the school bus?

• lever
• wedge
• inclined plane
• pulley

Tags

NGSS.MS-PS2-2

What is the fixed point where a lever turns or pivots?

• load
• work
• fulcrum
• screw

work is...

• energy from the sun

• boring

• a force applied to an object to move the object a distance

• something that pulls you toward the earth

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

• ladder
• stairs
• wall
• driveway

Which of the following is NOT one of the things a machine can do?

• Changes the amount of force required.

• Changes the distance over which the force is exerted.

• Changes the direction of the force.

• Changes the amount of work done.

Tags

NGSS.HS-PS3-3

How can simple machines make work easier?

• by decreasing the force needed to complete the task

• by increasing the friction between the machine and the object

• by adding more work on the object than originally applied

• by removing the force of gravity on the object

Which simple machine would be the MOST efficient for lifting an object 30 meters off the ground?

• pulley

• screw

• wedge

• lever

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3