4th Periodic Science Grade 7

The lines of latitude also known as parallels of latitude. When measuring the lines of latitude, always begin with the ______, which represents 0 degrees.

• a. Prime meridian

• b. Equator

• c. Longitude

• d. North pole

Watersheds drain their water into rivers and dams. Which of the following dam can be found in Norzagaray, Bulacan?

• a. La Mesa Dam

• b. Pantabangan Dam

• c. San Roque Dam

• d. Angat Dam

You can describe the location of a place using its latitude and longitude. Using your map, in which longitude could you find the Philippines?

• a. 120°E

• b. 120°W

• c. 80°E

• d. 80°W

Soil is formed when rocks and other materials near the Earth’s surface are broken down by a number of processes. What two factors have the greatest influence on soil formation?

• a. Reforestation and use of compost as fertilizer

• b. Kind of soil particles and temperature

• c. Slope of the land and rainfall

• d. Temperature and rainfall

What is the reason to support the statement “Cutting of trees in large areas contributes to global warming?”

• a. Plants use carbon dioxide to make food. When trees are cut CO2 in the atmosphere will not be used up.

• b. Plants use oxygen to make food. When trees are cut, oxygen in the atmosphere will not be used up.

• c. Plants use water vapour to make food. When trees are cut, water vapour in the atmosphere will not be used up.

• d. Plants use nitrogen to make food. When trees are cut, nitrogen in the atmosphere will not be used up

Global warming is the increasing temperature phenomenon. Which of the following human activities contribute to global warming?

• a. IV only

• b. I, II,III and IV

• c. II, III,IV

• d. I only

Atmosphere is the envelope of air that surrounds the Earths surface. What is the most abundant element in the Earth’s atmosphere?

• a. Oxygen

• b. Nitrogen

• c. Carbon dioxide

• d. Argon

The Earth’s atmosphere contains trace gases such as carbon dioxide, water vapor and etc. What is meant by “Trace’ Gases”?

• a. They are not harmful

• b. They naturally occurring on Earth

• c. They are present in very small amounts

• d. They are emitted by trees

Your community is rich in metallic minerals, which of the following should the community undertake in order to conserve such precious mineral deposits?

• a. Use dynamites to clear out the mountain and reveal the mineral deposits.

• b. Formulate laws and ordinances to regulate the mining of minerals.

• c. Put-up tunnels to harvest all metallic minerals.

• d. Use all of them to earn money.

Renewable resources are the resources that can be replaced. Which pair of resources is renewable?

• a. Cotton and leather

• b. Aluminum and iron

• c. Soil and minerals

• d. Coal and solar energy