Grade 7 Science 341231

Diagnostic Test in Grade 7 Science

Final Quarter

Name _______________________________________ Section ______________________ Date___________ Score ____ I. Multiple Choice. Write the letter of the best answer beside each number. 1. What are natural resources? These are materials or elements from the environment that people a. did not create c. use to meet their needs b. invented for themselves d. observe using a scientific equipment 2. What do you call a resource that people can use again and again but its supply can be replaced? a. renewable c. reliable b. recyclable d. unlimited 3. What two factors have the greatest influence on soil formation? a. temperature and rainfall c. kind of soil particles and temperature b. slope of the land and rainfall d. reforestation and use of compost as fertilizer 4. Which pair of resources is renewable? a. cotton and leather c. coal and solar energy b. aluminum and iron d. soil and minerals 5. Why are coal, petroleum, and natural gas considered nonrenewable resources if they were produced from plant and animal remains? a. It takes a very long time to produce them. b. Using them results in environmental problems. c. They are difficult to locate and explore from Earth. d. The Philippines is dependent on supply from other countries. 6. What is the most abundant element in the Earth's atmosphere? a. Argon b. Carbon dioxide c. Nitrogen d. Oxygen 7. What is the correct order of Earth's atmospheric layers from bottom to top? a. Stratosphere, Mesosphere, Troposphere, Thermosphere, Exosphere b. Stratosphere, Troposphere, Thermosphere, Mesosphere, Exosphere c. Troposphere, Mesosphere, Stratosphere, Thermosphere, Exosphere d. Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere 8. Which layer of the atmosphere contains the ozone layer? a. Mesosphere b. Stratosphere c. Thermosphere d. Troposphere 9. In which layer do virtually all weather phenomena take place? a. Exosphere b. Mesosphere c. Stratosphere d. Troposphere 10. In which atmospheric layer is most water vapor found? a. Troposphere b. Stratosphere c. Mesosphere d. Thermosphere 11. What is meant by ‘trace’ gases? a. They are not harmful. c. They are naturally occurring on Earth. b. They are emitted by trees. d. They are present in very small amounts. 12. What is the basis for the division of the layers of the atmosphere surrounding Earth? a. Changing temperature c. Changing weather patterns b. Changing amount of oxygen d. Changing composition of gases 13. Why is the presence of ozone above the troposphere important for the survival of living thing on Earth? a. It warms Earth’s surface. c. It makes jet flying more comfortable. b. It helps in cloud formation. d. It offers protection from the Sun’s harmful UV rays. 14. The greenhouse effect is a natural phenomenon. Without a natural greenhouse effect, the temperature of the Earth would be about -18°C instead of its present 14°C. Why are scientists concerned about the greenhouse effect? a. There is no technology that will keep the temperature of Earth constant. b. Planting trees in wider areas is not possible; Earth has many desert areas. c. Human activities like burning of fossil fuels and deforestation enhance the greenhouse effect. d. The human population is increasing rapidly; more carbon dioxide will be released to the atmosphere. 15. Why do hikers put on thicker clothes when climbing a high mountain? a. For protection against insect bites c. So they can easily be located when they get lost

b. The air temperature decreases with altitude d. To add more weight so they will not be pushed by the wind 16. What happens when air is heated? a. It rises. c. It spreads in all directions. b. It stays in place. d. It moves toward a lower elevation. 17. Which warms up faster, land or water? a. Land c. Both warm up at the same rate. b. Water d. Rate of warming varies; depends on weather conditions. 18. What happens to the surrounding air as warm air rises? a. Moves in all directions c. Moves away from the rising air b. Moves to a higher altitude d. Moves toward the place where warm air rises 19. In what direction do winds blow? a. From the northeast to the southwest c. From low pressure areas to high pressure areas b. From the southwest to the northeast d. From high-pressure areas to low-pressure areas 20. Which of the following does NOT describe the amihan? a. Brings lots of rain c. Comes around July to September b. Brings cold weather d. Comes from the northeast and moves southward 21. The diagram below shows the relative positions of the Sun, the Moon and Earth when an eclipse was observed on Earth. Positions X and Y are locations on Earth’s surface.

Which statement correctly describes the type of eclipse that was occurring and the position on Earth where this eclipse was observed? a. A total solar eclipse was observed in position X b. A total solar eclipse was observed from position Y c. A total lunar eclipse was observed from position X d. A total lunar eclipse was observed from position Y 22. The diagram below shows the Moon at four positions in its orbit around Earth. An observer on Earth could see a lunar eclipse when the Moon is at position a. 1 b. 2

c. 3 d. 4

23. Give three energy resources in the Philippines that are considered feasible as alternatives to fossil fuels? 24. What objects do you use that are made from materials produced from Mines: ______________________________________________________ Forest: ______________________________________________________ Farm: _______________________________________________________ 25. Make a concept map using the following words in the box: natural resources, minerals, rocks, soil, water, watershed, plants, animals, biodiversity, energy, people, conservation