Science Reviewer (L1)

A device or tool that simplifies work.

• machine

• simple machine

• tools

• work

A machine cosisting of two or more simple machines is called a?

• compound machine

• complex machine

• two machines

Many machines such as cars, cranes, and clocks have complicated parts. These are called...

• Compound machine

• Tools

• Complex machine

• Complicated machine

The ... is the metric unit of work.

• meter

• newton-meter (N-m)

• newton

• liters

... is done equal to the amount of energy used when a force moves an object.

• Work

• output force

• force

• gravity

When doing work, the force used is called the ... force.

• water

• gravity

• input

• output

The force that a simple machine exerts in doing work on an object is called the ... force

• output

• electric

• input

• gravity

It is a straight bar that can turn or pivot on a fixed point or support called a fulcrum.

• lever

• load

• effort force

• pullley

It is the input force the user applies on the lever.

• applied force

• unefforted force

• Effort force

• load

It is the object on which the force is exerted

• applied force

• load

• exerted force