What do you call an inclined plane that's wrapped around a post?

A SCREW!!!!!

 

 The most common place we've seen a screw is in a hardware store.

Look at this spiral staircase.

 

We know that stairs are inclined planes. 

So, when an inclined plane is wrapped around a post, it's a screw!

Did you know that the screw exists in many more places?

Here are some examples:

 Maybe it's on your jar of vegetables?

Look! A light bulb is a screw!

What about the drink you had at the basketball game? 

The top is a screw, too!

This is called an auger. 

It's a screw we use to drill into the ground.