1. PHIVOLCS means Philippine, Institute of
and Seismology
a. Volcanology
b. Oceanology
c. Astrology
d. Biology
2. Magma that flows or erupts onto Earth's surface is called
a. pyroclastic
b. lava
c. molten rocks
d. salt
3-4. The most important gases in lava are
a. Helium and neon
b. CO2 and He
c. Carbon dioxide and water vapor
d. Ne and H
5. The heat from the Earth's interior is a source of energy called
a. electrical energy
b. thermal energy
c. heat energy
d.geothermal energy​