2021 Simple machines

Simple machines transfer ___________ from one object to another by the action of a force.

• a load

• energy

• speed

• an effort

Levers and other simple machines allow people to use a small amount of energy to create a large amount of energy. True or False.

• True

• False

Simple machines can be force multipliers or _________ multipliers.

• load

• speed

• energy

Which two of the following simple machines are inclined planes?

• Ramps

• Gears

• Wedges

• Pulleys

A circular doorknob is an example of a

• wheel and axle

• gear

• pulley

• Wedge

Which body parts provide the effort when bones act as levers?

• joints

• muscles

• bones

• nerves

Which of the following best describes a lever?

• A simple machine

• A complex machine

• A force of attraction

• A machine that relies on electricity

When you bend your forearm upwards to lift a bucket of water, it acts as a lever.​​ Where is the fulcrum?

• The elbow

• the muscle

• The tip of your shoulder

• Your hand

When you bend your forearm upwards to lift a bucket of water, it acts as a lever.​​ The _____________ provides the effort.

• The elbow

• the muscle

• The tip of your shoulder

• Your hand

When you bend your forearm upwards to lift a bucket of water, it acts as a lever.​​ The weight of the bucket of water is the load. True or false?

• True

• False