Science Review

This is a device that makes work easier. It includes the lever, pulley, wheel and axle, inclined plane, wedge and screw. What is it called?

• Simple Machine

• Simple Motor

• Simple Device

• Simple Gadget

This is defined as the force that is needed to make something happen.

• Steam

• Gas

• Heat

• Effort

Which of the following is an example of an inclined plane?

• Movers using a ramp to move heavy objects.

• A person taking the elevator.

• A child pulling a wagon.

• A man using an axe to chop wood.

Each battery has a negative and positive side.

• True

• False

Trees have more leaves and fruit during the winter.

• True

• False

A lever and an inclined plane are examples of simple machines.

• True

• False

Simple machines make our work harder.

• True

• False

Looking at a tree's rings can tell you how old it is.

• True

• False

A tree with a thick ring shows that it is healthy and has had a lot of water and food.

• True

• False

A tree is considered an adult when it starts producing leaves.

• True

• False