Third Quarter Science Reviewer

Which characteristic of magma mainly determines its explosiveness?

• A. Color

• B. Amount

• C. Temperature

• D. Silica Content

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 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

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 become heavy as they pile up

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

Which among the following volcanoes is formed from mostly lava?

• A. 1

• B. 2

• C. 3

• D. None of the above

Which among the following volcanoes is formed from cinder and ash?

• A. 1

• B. 2

• C. 3

• D. None of the above

Which among the following volcanoes is formed from alternate solidification of lava and cinders?

• A. 1

• B. 2

• C. 3

• D. None of the above

Which of the following are active volcanoes?

I. Mayon in Albay

II. Taal in Batangas

III. Vulcan in Camiguin

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 magma mainly affect the explosiveness of a volcanic eruption?

• A. Color

• B. Amount

• C. Temperature

• D. Silica Content