Applied Semester 1 Review

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

A doorknob is an example of a _______.

• wheel and axle

• inclined plane

• pulley

• wedge

An example of a lever is a ________.

• doorstop

• drill

• staircase

• hammer

The fixed point around which a lever rotates is know as the

• wheel.

• fulcrum.

• input force.

• output force.

A simple machine that splits an object apart is a _______.

• inclined plane

• fulcrum

• wedge

• lever

A ramp is an example of a(n) _______.

• inclined plane

• fulcrum

• force

• lever

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

A doorknob is a simple machine made up of 2 circular objects of different sizes. When turning a doorknob, what type of simple machine is being used?

• inclined plane

• wheel and axle

• wedge

• pulley

Which of the following is NOT an example of the simple machine know as a screw?

• the lid of a jar

• a bolt

• a drill bit

• a crowbar

Workers push a heavy box up an inclined plane and onto a moving truck. Which best explains why these workers use an inclined plane?

• It makes their work easier because it requires less effort.

• It decreases the amount of work they have to do.

• It increases the amount of friction necessary to do the task.

• It makes the box weigh less.