THIRD PERIODIC TEST IN SCIENCE 9

What happens to the temperature of air when altitude increases?

• a. remains the same

• b. increases

• c. decreases

• d. varies

Which of the following BEST describes climate?

• a. the weather that occurs in the atmosphere within a day

• b. the pattern of weather that occurs in a region over a long period of time

• c. the pattern of weather that occurs in a region over a short period of time

• d. the disturbance in the atmosphere that happens in a long period of time

A thick layer of volcanic ash can be heavy enough to collapse the roofs of buildings because ash _____.

• a. is solid

• b. cannot be blown by winds

• c. becomes heavier as it cools

• d. consists of tiny fragments of rocks that becomes heavy as they pile up

Which of the following are active volcanoes? I. Mayon in Albay III. Vulcan in Camiguin II. Taal in Batangas IV. Kanlaon in Negros Oriental

• a. I and II only

• b. II and III only

• c. I, II, and III only

• d. I, II, and IV only

Which of the following characteristics of a volcano depends on its magma emission?

• a. age

• b. size

• c. shape

• d. location

Which of the following is an active volcano in the Philippines?

• a. Apo in Davao

• b. Bud Datu in Sulu

• c. Isarog in Camarines Sur

• d. Kanlaon in Negros Oriental

How does the windward side differ from the leeward side of a high land?

• a. The windward side receives more precipitation than the leeward side.

• b. The leeward side has more vegetation than the windward side.

• c. The windward side receives more heat than the leeward side.

• d. The leeward side receives more precipitation than the windward side.

Which characteristic of magma mainly determines its explosiveness?

• a. color

• b. amount

• c. temperature

• d. silica content

Which of the following characteristics of magma mainly affect the explosiveness of a volcanic eruption?

• a. color

• b. amount

• c. temperature

• d. silica content

Which of the following factors associated with huge volcanic eruptions may cause the decrease in the Earth’s average temperature for a few years?

• a. heat

• b. light

• c. acid rain

• d. volcanic ash