Understanding Forces and Simple Machines

What is a force?

• A type of food.

• A push or a pull.

• A color.

• A type of animal.

Which of these is an example of a pulling force?

• Kicking a ball.

• Opening a door.

• Lifting a backpack.

• A dog pulling on a leash.

What happens when you push a toy car?

• It gets colder.

• It moves.

• It changes color.

• It floats.

Which of these is a simple machine that helps you move things up or down?

• A mirror.

• A ramp (inclined plane).

• A book.

• A cloud.

A seesaw is an example of what kind of simple machine?

• A wheel and axle.

• A pulley.

• A lever.

• A screw.

What simple machine is used to hold things together, like a jar lid?

• A wedge.

• A screw.

• A pulley.

• A lever.

Wheels on a bicycle help us move by using what simple machine?

• A wedge.

• A screw.

• A wheel and axle.

• A lever.

A axe or knife are examples of what simple machine?

• A wedge

• a lever

• a screw

• a pulley.

What does friction do?

• Makes things move faster.

• Slows things down.

• Makes things float.

• Makes things disappear.

A flagpole often uses what simple machine to raise a flag?

• A wedge.

• A screw.

• A pulley.

• An inclined plane.