Science 4 Review

A _______ is used to lift and move things. When you push down on one end, the other end lifts up.

• pulley

• lever

• wheel and axle

• wedge

A _____ is a simple machine made from two slanted sides that end in a sharp edge.

• inclined plane

• pulley

• wedge

• lever

A _______ is made of a round object attached to a post.

• lever

• wheel and axle

• inclined plane

• wedge

An _____ , or a ramp, is a slanted surface. It connects a lower level to a higher level.

• inclined plane

• pulley

• wheel and axle

• screw

A _____ can make work easier in two ways. It can decrease the amount of force needed to move an object. It can also change the direction that the force is applied.

• design process

• wedge

• pulley

• cactus

An ______ is any person who designs new technologies.

• fire fighter

• doctor

• teacher

• engineer

The _______ is a step-by-step process used to solve a problem.

• roots

• design process

• nutrients

• simple machine

A ______ is any material needed by living

things for energy, growth, and repair.

• engineer

• nutrient

• prototype

• research

_____ keep the plant stable in the ground.

• Roots

• Leaves

• Stems

__________ means the use of force to move an object across a distance.

• simple machine

• lever

• work

• complex machine