y.2 n.3 humanly-made

Steel is made from 2 natural materials:

• Iron and wood

• Iron and carbon.

• nylon and carbon.

• concrete and glass.

Steel is a humanly-constructed

• True

• False

Plastic is a humanly-constructed

• True

• False

Is leather a natural material?

• True

• False

Is coal human-made?

• True

• False

Is glass a natural material?

• True

• False

Polyester ,Rubber ,Concrete, Plastic
All of these materials are ..................

• natural materials

• Humanly-Constructed Materials

Cotton ,Iron ,Chalk ,Gold ,Sand
All of these materials are ..................

• natural materials

• Humanly-Constructed Materials

Plastics are all around us.

Some uses are plastic bottles, toys, stationery and technology casing.

• True

• False

There are many types of plastic.

• True

• False