A screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread. A screw thread is the essential feature of the screw as a simple machine and also as a fastener.
Quick Answer. Tin is an element that is made up of the mineral cassiterite and mined from the crust of the earth. The combination of cassiterite and carbon in a high heat setting forms the type of tin that is used in modern applications. Continue Reading.
Renewable refers to things like wind or sunshine, which keep on coming even if we use them to produce energy. Other things are classed as renewable if we can grow them as fast â¦ as we use them. Like vegetables. Other things get used up and don't renew, like rain-forests and minerals. So tin is non-renewable. It's a metal. When we use it all up, there's none left. Tin is like gasoline. Once you burn it you can not renew it.