NAME:_____________________________________________________________________________________________________Mastery test in Science IVChoose the correct answer. Encircle the letter of the correct answer.

1. Which of the following materials float in water?a. Big stoneb. metal spoonc. empty plastic bottled. crystal glass

2. Using the data below, which group of materials can be used to prevent oneself from drowning?AB CMaterials that absorb waterMaterials that floatMaterials that sink

ClothSpongeRugCotton rollTwine clothBamboo stemLogPlastic bottle with coverPiece of woodBig stonesMetal barHollow blocks

a. A, B and Cb. Bc. Ad. C

3. Your mother asked you to give her medicine for fever. What are you going to do first?a. b. Read the label of the medicine.c. Get a glass of water and the medicine.d. Get the medicine and give it right away to your mothere. Taste the medicine before giving it to your mother.

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

5. If you are going to dispose waste materials commonly found at home, what are you going to do with decaying materials?a. b. Make a compostc. Throw them in the riverd. Mix them with the non-decaying

e. Keep them in the cabinet and use them again.

6. A glass of water spilled on the table. You want to dry the table at once. What are you going to use?a. Cottonb. Rug made of clothc. Tissue paperd. Handkerchief

7. If you are exposed to garbage, what illness would you probably get?a. Heart failureb. Asthmac. Goiterd. Nose bleed A BC

Empty can and empty bottle of softdrinks, milk, cereal drink, sardines, corned beef, meat loafBottle of mineral water, glass, empty container of catsup, toyo/vinegar, broken pail, basinFish bone, chicken feathers, kangkong stem, potato peeling, left-over meat

8. Which group of materials will undergo decay?a. A and Bb. C and Ac. Ad. B9. Which group of materials is recyclables?a. A and Bb. B and Cc. A and Cd. C10. Which group of materials can be turned into fertilizer?a. A and Cb. B and Cc. Bd. A11. Which of the following show proper waste disposal?a. b. Throwing garbage to the seac. Putting all waste materials in one containerd. Throwing leftover foods in drainage canale. Segregating waste into decaying and non-decaying

12. You are going to buy can juice in the store for your visitors snack. The following can juices were displayed in the store with its expiration date. Which of them are you going to buy?a. b. Pineapple juice best before January 2014c. Orange juice best before March 2014d. Mango juice best before July 2014e. Apple juice best before 2015

13. Why it is important to read the label of any product?a. b. To know the price of the productc. To get the number of pieces sold in the marketd. To know who buy producte. To use product correctly.

14. Why do some materials absorb water?a. b. Because some materials have tiny holes that let the water in.c. Some materials are soft that can easily get water ind. Some materials are made of vinyle. Some materials are expensive15. 16. Which of the following materials have the ability to sink in water?a. Metal spoonb. Woodc. Plastic sheetd. Twigs17. How should non-decaying wastes be disposed?a. By compostingb. Reusingc. By recyclingd. both B and C18. Wastes that are not properly disposed may _______.a. b. Become breeding places of pests such as mosquitoes and fliesc. Cause loss of humus soild. Speed up the materials to decaye. Allow free flow of rain water run off

19. Waste should be segregated into _____ groups.a. Decaying and non-decayingb. Bluish and yellowishc. Small and bigd. Hard and soft20. What safety precaution do you need to observe in disposing waste materials?a. Use gloves or adequate equipment in handling waste materials to prevent puncture by sharp items.b. Taste and touch waste materials before disposing them.c. Keep the waste materials in your kitchend. Expose yourself to the waste materials.21. What should people do with the garbage to prevent oneself from getting sick?a. Dispose waste materials properlyb. Take medicinec. Throw the waste materials anywhere in your surroundingsd. Drink untreated water.II. Choose the letter of the meaning of the illness e can get if we could not properly disposed.our waste materials.A. B21. malaria and dengue A. it is a water borne disease, drink or polluted water causes it 22. thypiod B. it is a disease that can cause severe diarrhea 23 dysentery C. eating of polluted food24.allergy D. disease cause by specific type of mosquitoes25. diarrhea E. a skin problems cause by polluted air.

III. SOLID MATERIALS IDENTIFY THE MATERIALS IF THEY ARE MELT, STRETCH, CRUMP, BEND OR EVEN CUTT. 26. candle ________________ 27. paper ________________ 28. rubber band ________________ 29. iron and wire ________________ 30. clothings ________________