I. Choose the letter of the correct answer.

1. Which of the following materials absorb water more than the others?
a. towel
b. rubber
c. plastic d. cotton

2. Which of these materials does not allow materials to pass through?
a. paper bag b. tissue paper c. plastic d.cloth

3. Classify the following materials according to their ability to absorb water.
1.paper,cotton, towel
II. towel, paper, cotton
III. cotton, towel, paper
IV. cotton, paper, towel
a. I b. II c. III d.IV

4. Which of the following materials is porous?
a. pencil b. tissue c. bath soap d. chalk

5. Why do some materials absorb water?
a. because some materials have tiny holes that let the water in.
b. some materials are soft that can easily get water in.
some materials are made of vinyl.
d. Some materials are expensive.

6. Which of the following materials have the ability to sink in water?
a. Metal spoon b. wood c. plastic sheet d. fwigs

7. Why do boats float in water?
a. boats are made of wood that make them float.
b. Man uses paddle to make the boat float
The sea breeze makes the boat float in water.
d. The boat is tied with plastic string that makes it float.

8. Using the data below, which group of materials can be used to prevent oneself from drowning?
1. materials that absorb water (cloth, rug, twine cloth, sponge, cotton roll)
II. materials that float (bamboo stem, log, plastic bottle with cover, piece of wood)
III. materials that sink (big stones, metal bar, hollow blocks)
a. I, II and III b. ll only c. I only d. I and III

9. Which of these materials will undergo decay ?
a. pechay
b. sponge
C. empty can d. plastic bag

10. Which of the following show proper waste disposal?
a. throwing garbage into the sea
b. putting all waste materials in one container
c. throwing left-over foods in the drainage canal
d. segregating waste into decaying and non-decaying

11. How should non-decaying wastes be disposed?
a. by composting b. by reusing c. by recycling d. b and o

12. Wastes that are not properly disposed may. ?
a. become breeding places of pests such as mosquitoes and flies
b. cause loss of humus soil
c. speed up the materials to decay
d. allow free flow of rain water run off​