1ST SUMMATIVE ASSESSMENT IN SCIENCE 4

Which of the following is porous?

• sponge

• spoon

• spatula

Which of the following is nonporous?

• cotton

• plate

• rug

Which of the following shows being biodegradable of a material?

• My sister recycles the candy wrappers.

• My father uses old tires to to make slippers.

• My mother makes the food scraps as fertilizer.

Which of the following shows being nonbiodegradable of a material?

• My father made a door decoration out of used plastic spoons.

• My brother keeps the egg shells and puts them to our plants.

• My younger sister eats fruits and bread.

The following show the ways of preventing harmful effects of decaying materials except:

• Do not eat leftover food showing signs of spoilage.

• Disregard to check the expiry date of the food you buy.

• Dispose your garbage properly.

The following do not show the ways of preventing harmful effects of decaying materials except:

• Keep leftover food exposed to the sun.

• Always cover your garbage bins

• Dispose your garbage improperly.

Which of the following indicates that substances with this characteristic are poisonous to people and other organisms?

• Toxic

• Flammable

• Corrosive

Which of the following indicates that substances with this characteristic may destroy the tissues of the living ones and some equipment?

• Explosive

• Corrosive

• Flammable

This word means sorting out the materials into biodegradable or nonbiodegradable for disposal.

• Recycling

• Segregating

• Decaying

Which of the following abilities shows that it allows a material to be hammered into thin sheets?

• ductility

• elasticity

• malleability