Properties of Materials (Science Grade Four)

What do you mean by float on the water?

• To stay on top of the water

• To stay in between the water

• To stay at the bottom of the water

• To stop

What do you mean by to sink?

• To dance

• To stay at the bottom

• To stay up in the air

• To shine

Which of the following materials will float?

• coin

• metal spoon

• stone

• empty plastic bottle

Which of the following materials will sink?

• plastic ball

• empty plastic bottle

• metal spoon

• rubber duck toy

Porous materials are materials _________________________.

• having small holes that allow air or liquid to pass through

• having no hole and do not allow air or liquid to pass through

• having no air

• all of the above

Which of the following materials has the ability to absorb water?

• cotton

• plastic cover

• rubber ball

• metal spoon

_____________ is an example of material that does not absorb water.

• sponge

• rubber ball

• face towel

• rug

Which of the following group of materials will undergo decay?

• fish bone, kangkong stem,banana peeling

• empty bottle, broken glasses, broken basin

• can of sardines, soda cans, empty bottle of catsup

• none of these choice

A glass of water spilled on the table. You want to dry the table at once. What are you going to use?

• cotton

• rug made of cotton cloth

• plastic cover

• tissue paper

Why do some materials absorb water?

• Because some materials are soft that can easily get water in.

• Because some materials have tiny holes let the water in.

• Because some materials are made of plastics.

• Because some materials are expensive.