Form Core Wheels A LITTLE HELP, I DON'T UNDERSTAND AT ALL! ): PLEASEE (MAYBE SOMEONE WHO ALREADY DID THIS ASSIGNMENT)?

A LITTLE HELP, I DON'T UNDERSTAND AT ALL! ): PLEASEE (MAYBE SOMEONE WHO ALREADY DID THIS ASSIGNMENT)? - form core wheels

For questions 1-5, identify the simple machine that makes each item.
1. A door on a hinge (1 point)
Wedge
Screw
Sunrise
2. A fork (1 point)
Wedge
Screw
Sunrise
3. Roller skates (1 point)
Wheel and axle
Pulley System
Wedge
4. An elevator in a tall building (1 point)
Wheel and axle
Pulley System
Wedge
5. Screwdrivers (1 point)
Wheel and axle
Pulley System
Wedge
6. If two or more of these simple machines linked so that a heavy burden has been lifted with less force. The compensation is the need for the end of the rope to travel a greater distance from the load. (1 point)
Pulley System
Wedge
Screw
7. Nearly all cutting machines use this simple machine. (1 point)
Pulley system, and Screw
Wedge and Lever
Wedge, Screw
8. This machine is a single rigid, that revolves around a pivot point. The downward movement at one end of the shaft results in the upward movement at the other end. (1 point)
Wheel and axle
Pulley System
Sunrise
9. This simple machine is a central core of a thread or groove wrapped it in a helix to form. As you turn the machine to convert a rotary motion into a movement forward or backward. (1 point)
Wedge
Screw
Sunrise