Now,let's talk about wood. Wood is lighter than metal and glass. It is not as strong as metal. But it is much stronger than glass. We use wood to make lost of things. Things made from wood are usually light and hard and strong. Chairs and tables are made from wood. Pencils are made from wood. Now let's talk about cloth. Cloth is very light. It is much lighter than wood. And it is very soft. We use cloth to make lost of things. For example, it is used to make clothing. And it is used to make blankets. Last,let's talk about plastic. Plastic is also very light. But it is different from cloth. Sometimes it is soft. And sometimes it is hard it is hard. Plastic can be ueed to make thin plastic bags. These are light, soft, and strong. But plastic can also be used to make bicycle helmets. These are light,hard,and strong. A helmet and a bog seem different. But they are both made from plastic