science

What is work?

• The use of a force to move an object across a distance.

• Solving a math problem.

• A simple machine.

• When you don't move an object.

Read and choose the correct simple machine.

Is made of a round object, a wheel, attached to a post, called an axle.

• Wheel and axle

• Wedge

• Lever

• Inclined plane

Read and choose the correct simple machine.

Is a simple machine made from two slanted sides that end in a sharp edge.

• Wheel and axle

• Wedge

• Lever

• Inclined plane

Read and choose the correct simple machine.

Is a stiff bar that rests on a support.

• Wheel and axle

• Wedge

• Lever

• Inclined plane

Read and choose the correct simple machine.

... or a ramp, is a slanted surface.

• Wheel and axle

• Wedge

• Lever

• Inclined plane

Read and choose the correct simple machine.

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.

• pulley

• screw

• Lever

• Inclined plane

Read and choose the correct simple machine.

Is an inclined plane wrapped around a center post.

• pulley

• screw

• Lever

• Inclined plane

What is the design process?

• Is a step-by-step method used to solve a problem.

• A force to move an object.

• A solution is an answer to a problem.

• An engineer is any person who designs new technology.

Which is the first step in the design process?

• Identify the problem

• Do research

• Develop possible solutions

• Choose one solution

What is an engineer?

• A person who designs new technologies.

• A simple machine.

• A wheel and axle.

• The use of a force to move an object.