A see-saw is this.

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Your car runs on this

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

A knife is a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

An elevator uses

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Stairs are an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

A hammer used to pull nails is a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Your teeth are an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

A bottle cap is an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Scissors use a combination of which two simple machines?

1. Screw
2. Wheel and Axle
3. Wedge
4. Lever
5. Incline Plane
6. Pulley

An ax is an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Your arm is an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

Bike pedal are an example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley

A nut and bolt set uses the example of a

1.   ?    Screw
2.   ?    Wheel and Axle
3.   ?    Wedge
4.   ?    Lever
5.   ?    Incline Plane
6.   ?    Pulley