Volcanoes

Question 1

1) When hot molten materials reach the surface, we call these materials as _________.
(A) Lava
(B) Magma

Answer 1

A. Lava refers to the hot molten materials that reach the surface.

Question 2

2) _____________ have symmetrical cone-shaped morphology. Famous examples are the Mt.
Mayon and Mt. Fuji.
(A) Shield Volcanoes
(B) Stratovolcanoes

Answer 2

B. Stratovolcanoes

Question 3

3) Which of the following describes what a caldera is?
(A) a large depression formed when a stratovolcano collapsed from an explosive eruption
(B) accumulation of layers of runny and fast-moving basaltic lava flows

Answer 3

A. Caldera refers to a large depression that was formed when a stratovolcano
collapsed from an explosive eruption

Question 4

4) How many active volcanoes are there in the Philippines?
(A) 24
(B) 22

Answer 4

A. 24 are active volcanoes out of 407 volcanoes in the Philippines.

Question 5

5) How do shield volcanoes get their broad form?
(A) accumulation of basaltic lava flows
(B) alternating layers of andesitic lava flows

Answer 5

Shield volcanoes obtained its broad form due to the accumulation of layers of runny, fast-moving basaltic lava flows.