Science and Health: Chapter 4 - Test (1-10)

Directions: Read each question carefully. Then pick out the letter of the correct answer and write it on your paper.

1. What is the continuous and circular flow of chemicals or materials between organism and their environment to maintain balance in nature?a. Geophysical cycleb. Biogeochemical cyclec. Geochemical cycle]d. Food cyclee.

2.A coral reef, a forest and pond systems are examples of _______________.f. ecological nicheg. populationh. food chain]i. Ecosystemj.

3. Which of the following government program is way of coping excessive population growth? a. Reforestation Program b. Infrastructure Program c. Family Planning Program 4. Educational Program

4. Which of the following is a solution? a. cup of coffee with milk b. salt and sand c. sugar d. gravel and sand

5. A book on the table possesses __________ energy/ a. kinetic b. potential c. mechanical d. electrical

6. When you whirl a cup of water in a net in a circular direction perpendicular to the ground, the water remained in the cup even at the top of the circle when the mouth was pointed downwards. What was the force that kept the water in the cup?a. The centrifugal force created was so great that the downward pull of gravity was overcome.b. The centripetal force created was so great that the downward pull of gravity was overcome.c. \the centrifugal force created was so great that the upward push of the gravity overcome.d. None of the above

7. Gasoline is burned to run a motorcycle. The energy conversion is from ________ energy to ___________ energy to ____________ energy.
a. heat;mechanical;chemicalb. heat;chemical;mechanicalc. chemical;mechanical;heatd. chemical;heat;mechanicale.

8. When you broil meat, the heat is transferred by means of radiation. When you fry, the heat travels from the stove to the frying pan by ______________. a. convection b. conduction c. radiation d. none of the above

9. The high temperature of the earth’s interior is evident because of the heat_________. a. felt during the day b. coming from volcanoes c. coming from hot springs d. both b and c

10. An instrument used by navigators to find latitude of the earth. a. spectroscope b. compass c. sextant d. telescope