Compound Machine Activity

Compound machines consist of two or more simple machines combined together to make work easier and increase the mechanical advantage. What two simple machines are used in a pair of scissors?

• Lever and a wheel/ axle

• Screw and a wedge

• Wedge and a lever

• Pulley and a lever

Answer explanation

Tags

NGSS.MS-PS2-1

Compound machines consist of two or more simple machines combined together to make work easier and increase the mechanical advantage. What two simple machines are used in a corkscrew?

• Pulley and a wedge

• Wedge and a screw

• Lever and an inclined plane

• Screw and a lever

Answer explanation

Compound machines consist of two or more simple machines combined together to make work easier and increase the mechanical advantage. What three simple machines are used in a can opener?

• Wedge , wheel/ axle, and inclined plane.

• Wedge, lever, and wheel/ axle.

• Inclined plane, screw, and wheel/ axle.

• Pulley, wheel/axle, and wedge.

Answer explanation

Tags

NGSS.MS-ETS1-3

Compound machines consist of two or more simple machines combined together to make work easier and increase the mechanical advantage. What three simple machines are used in a bicycle?

• Wheel/ axle, pulley, and a lever.

• Inclined plane, pulley, and wheel/ axle.

• Wedge, lever, and screw.

• Screw, lever, and Inclined plane.

Answer explanation

Which two simple machines are combined in a wheelbarrow?

• Lever and wheel/axle

• Pulley and inclined plane

• Screw and wedge

• Lever and pulley

What is the primary function of a compound machine?

• To increase speed

• To decrease force

• To make work easier

• To increase distance

Tags

NGSS.MS-PS2-1

In a compound machine, if the mechanical advantage is greater than 1, what does it indicate?

• The machine increases speed

• The machine decreases speed

• The machine multiplies force

• The machine reduces force

Tags

NGSS.MS-PS2-2

Which of the following is an example of a compound machine?

• Bicycle

• Inclined plane

• Screw

• Pulley

How does a compound machine differ from a simple machine?

• It has more moving parts

• It requires more energy

• It combines multiple simple machines

• It is less efficient

What is the role of friction in the operation of compound machines?

• It increases efficiency

• It decreases efficiency

• It has no effect

• It only affects simple machines