Simple Machines

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

Tags

NGSS.MS-PS2-2

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.

Tags

NGSS.MS-ETS1-1

A doorknob is an example of a _______.

• wheel and axle

• inclined plane

• pulley

• wedge

Which type simple machine would the base of a light bulb be?

• screw
• wedge
• wheel and axle
• pulley

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

The bow or front of a boat splits the water as the boat moves. What kind of simple machine would the bow of the boat be?

• wedge

• screw

• ramp

• lever

Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?

• Wedge

• Lever

• Pulley

• Inclined Plane

A tool with only a few parts that helps you do work is called a

• simple machine

• complex machine

• axle

• fulcrum