Network
Materials:
1. Our world is made up of many different materials.
2. Metals come from rocks.
3. Wood comes from trees.
4. Plastics and glass are made in factories.
5. Ceramics are made of mud and clay.
6. Most fabrics are made of parts of plants or animals.
7. Tissues are made of a special absorbent paper.
Characteristics:
1. Some materials, such as metal, feel cold when you touch them because they draw the heat from your hand. They are said to be good thermal conductors.
