Provide an example of how a screw is used in everyday applications.

A screw is a simple machine that converts rotational motion into linear motion, which allows it to hold objects together securely by creating a tight bond as it is driven into materials. The example of a bottle cap or a wood screw highlights the practical applications of screws in everyday items.

In the case of a bottle cap, the spiral ridges on the inside of the cap create tension when twisted onto the neck of a bottle, providing a secure seal that prevents liquids from spilling or leaking. Similarly, a wood screw features a helical thread that grips the wood once it is driven in, pulling materials tightly together and providing stability and strength to structures such as furniture or constructions.

This example effectively illustrates how screws are utilized in commonplace items to serve practical functions, emphasizing their significance in both everyday life and mechanical applications.