HOW THE PHILIPINES ARC WAS FORMED

Question 1

The Philippines, an island arc system located _______of the Asian

Answer 1

southeast

Question 2

Comprising of more than ______ island and island groups, the Philippine Island arc system was produced by the collision of geologic blocks.

Answer 2

7500

Question 3

PHIVOLCS stand for

Answer 3

Philippine Institute of Volcanology and Seismology

Question 4

The 6 most active volcanoes are:

Answer 4

Mayon, Taal, Canlaon, Bulusan, Hibok-hibok, and Pinatubo.

Question 5

earthquake that took place in August 1968 with a magnitude 7.3 and whose epicenter was located in _______

Answer 5

Casiguran, Quezon.

Question 6

second devastating earthquake was the world the spot was on July 15 1990 with a magnitude of 7.9. Its epicenter was located near the town of _________

Answer 6

Rizal in Nueva Ecija

Question 7

we witness the devastation caused by the magnitude 6.9 earthquake which struck in ______.

Answer 7

Negros Oriental

Question 8

October 15 2013 with the 7.2 magnitude structed _____

Answer 8

Bohol

Question 9

we do not see any earthquakes reported in what island?

Answer 9

Palawan Island

Question 10

________ rocks are believed to have been derived from rocks similar to those found in continental land masses such as mainland Asia.

Answer 10

quartz metamorphic rocks

Question 11

are protozoans which produced siliceous skeletons that may be preserved in siliceous rocks.

Answer 11

Radiolarians

Question 12

are dominantly made up of quartz grains

Answer 12

Sand stones

Question 13

is a mineral soil is found in sedimentary and metamorphic rocks.

Answer 13

Zircon

Question 14

are thus useful in determining the ages of rocks which contain them.

Answer 14

Zircons