Did you know that plastic will melt when it is heated to a very high temperature? Once it has been melted, it can be turned into a different shape. Discover more interesting facts about this material in Plastic.
Did you know that metal is found inside rocks? After it is separated from a rock, it can be made into many different things. Discover more interesting facts about this material.
Did you know that glass is made from sand? The sand is heated to a high temperature to turn it into a liquid. Discover more interesting facts about this material.
Explains what wool is and how it is made, looks at the processes of shearing, cleaning, and making wool yarn, and discusses special uses of wool and recycling.
Explains what wood is and where it comes from, looks at the processes of cutting down trees and sawing the wood into boards, examines the use of wood in building, making paper, and other purposes, and discusses recycling.
"Did you know that water covers about 70 percent of Earth’s surface? All living things need it to live. Discover more interesting facts about this material.
Did you know that rocks are sorted into three main groups? These groups are called igneous, sedimentary, and metamorphic. Discover more interesting facts about this material.
Explains what plastic is and what it is made of, looks at the processes of molding, casting, extruding, and laminating plastic, and discusses special uses of plastic, and recycling.
Explains what glass is and how it is made, looks at the processes of blowing, casting, and pressing glass, and discusses glass fiber, special uses of glass, and recycling.
