Grade 406

What are man-made materials?

• Materials found in nature

• Materials made by animals

• Materials made by man

• Materials made by plants

Which of the following is a man-made material?

• Wood

• Cotton

• Plastic

• Wool

Nylon is an example of:

• A natural material

• A living thing

• A man-made material

• A fruit

A waterproof material will:

• Soak water

• Let water pass through

• Float on water

• Not let water pass through

Which of these materials is not waterproof?

• Plastic

• Glass

• Cotton

• Metal

What does it mean if a material floats?

• It shines

• It bends

• It stays on water

• It sinks

A strong material:

• Can be broken easily

• Bends easily

• Holds heavy things

• Absorbs water

A flexible material can:

• Break easily

• Stretch or bend

• Stay stiff

• Rust

How do we test the strength of a material?

• Drop it

• Stretch it

• Try to tear or break it

• Heat it

To test if a material floats or sinks, we should:

• Burn it

• Scratch it

• Put it in a tub of water

• Drop it on the floor