Choose the letter of the best answer.
1.Which of the following types of eruption is characterized by a stream-driven eruption as the hot rocks come in contact with water. It is short-lived, characterized by ash columns but maybe an onset for a larger eruption?
a. phreatic c.strombolian
b. plinian d.vulcanian

2.After an explosive eruption, a scenic cone-shaped structure may be produced or a cone-shaped structure maybe produced or changes on its slope can be observed. Which of the following are primary factors the volcanoes eruptive style?
a. magma`s temperature
b. amount of dissolved gases
c. magma`s chemical composition
d. all of the above

3. Many Filipinos are still nearby volcanoes though they know the hazards during a volcanic eruption. Why settlements are still found near volcanoes?
a. to facilite the study of volcanoes
b. to reap the benefits of volcanoes, like the fertile soil.
c. people are unaware of the danger of living near volcanoes.
d. to send out immediate warnings to others in the near vicinity.