Science IV Quarter 1 Review

Which of the following materials will float in water?

• key

• coin

• plastic toy boat

• stone

Why do boats float in water?

• Boats are made of wood that make them float

• Man uses paddle to make boat float

• The sea breeze makes the boat float in water

• The boat is tied with plastic string that makes it float

Which of the following show proper waste disposal?

• throwing garbage to the sea

• putting all waste materials in one container

• throwing left-over foods in the drainage canal

• segregating waste into decaying and non- decaying

Which of the following describes what happens to the white sugar when mixed with iodized salt?

• White sugar can be distinguished with the iodized salt when mixed.

• White sugar cannot be distinguished with the iodized salt when mixed.

• White sugar settles at the bottom of iodized salt.

• White sugar completely mixed with iodized salt.

What might happen when flour is mixed with cold water?

• The flour will dissolve completely in water.

• The flour will dissolve partially in water.

• The flour will not dissolve completely in water at all.

• The flour will not settle at the bottom of the water.

What do you call wastes such as dry leaves, used sheets of paper, leftover food, and animal wastes that easily rot?

What do you call wastes such as plastics, metals, and bottles that take a very long time to decay or decompose?

What do you call that process of turning biodegradable wastes into organic fertilizers?

Aljohn heated a chocolate bar to make a chocolate syrup. Which of the following describes what changes happened in the property of the chocolate bar when it is heated?

• The chocolate bar changed its size and shape.

• The chocolate bar changed its taste and odor.

• The chocolate bar changed its texture and odor.

• The chocolate bar changed its odor and texture.

What will you do to dissolve sugar faster in a cup?

• Use cold water.

• Use hot water.

• Add more water to the sugar.

• Add more sugar in the water.