Understanding Simple Machines

Which simple machine consists of a wheel and a bar that helps in moving objects?

• Screw

• Wheel and Axle

• Lever

• Pulley

What simple machine is a slanted surface that makes lifting heavy objects easier?

• Pulley

• Inclined Plane

• Wedge

• Screw

Which simple machine is a bar that pivots on a fixed point?

• Lever

• Wedge

• Pulley

• Wheel and Axle

What is a screw essentially made of?

• A wheel and axle

• Two wedges joined together

• An inclined plane wrapped around a pole

• A lever wrapped around a pole

Which of the following acts as both a wedge and a lever?

• Round door knob

• Scissors

• Elevator

• Bicycle handlebars