Simple Machines

What helps move a giant rock when it's too heavy?

• A big stick

• A simple machine

• A strong person

• A small cat

Why did people start using simple machines?

• To make tasks harder

• To use more energy

• To make tasks easier

• To play games

What do simple machines help us do?

• Make tasks longer

• Use more force

• Reduce the energy needed

• Make things heavier

Which of these is an example of a lever?

• A crowbar

• A screw

• A pulley

• A ramp

In a lever, what is the heavy object you want to move called?

• The effort

• The fulcrum

• The load

• The arm

Where is the fulcrum placed in a first-class lever?

• At the end of the lever

• Between the load and the effort

• On top of the load

• Far away from the load

What simple machine helps you pull water from a well?

• A lever

• A screw

• A pulley

• An inclined plane

What simple machine has spiral grooves and helps join things?

• A wedge

• A screw

• A pulley

• A lever

What is a sloping surface used to move heavy objects up or down called?

• A lever

• A pulley

• A wedge

• An inclined plane

Which of these tools is an example of a wedge?

• A bottle cap

• A well

• A knife

• A car wheel