What is a raw material?

• A type of manufactured good

• A substance extracted directly from nature

• A synthetic material

• A product made by humans

Which of the following is an example of a raw material of animal origin?

• Cotton

• Marble

• Wool

• Wood

What type of process is melting a metal?

• Chemical process

• Physical process

• Manufacturing process

• Natural process

Which material is derived from tree trunks?

• Steel

• Wood

• Cotton

• Marble

What is the main use of plastics?

• Furniture

• Textiles

• Construction materials

• Tubing and packaging

Which of the following is a characteristic of thermal insulators?

• They conduct electricity

• They do not conduct electricity

• They are very heavy

• They are always transparent

What is the property of a material that allows it to recover its original shape after being stretched?

• Malleability

• Plasticity

• Ductility

• Elasticity

Which of the following materials is opaque?

• Tissue paper

• Glass

• Wood

• Plastic

What happens to materials when the temperature increases?

• They become transparent

• They become heavier

• They expand

• They dissolve

Which of the following is a non-renewable raw material?

• Coal

• Wool

• Wood

• Cotton