MAGMATISM ; IGNEOUS ROCKS

IT COMPOSED OF SEMILIQUID HOT MOLTEN ROCKS.

• LAVA

• MAGMA

• INTRUSIVE ROCK

• EXTRUSIVE ROCK

IT IS THE FORMATION AND MOVEMENT OF MAGMA UNDER THE EARTH'S CRUST.

• METAMORPHISM

• MAGMATISM

• LAVA

• MAGMA

WHICH OF THE FOLLOWING ELEMENT HAS THE GREATEST PERCENTAGE IN MAGMA COMPOSITION?

• ALUMINUM

• IRON

• OXYGEN

• SILICON

MAGMA IS FORMED THROUGH THE FOLLOWING PROCESS EXCEPT_.

• addition of SO2

• addition of water

• addition of CO2

• melting of minerals

MELTING OF MAGAMA INCLUDES THE FOLLOWING EXCEPT_.

• INCREASE IN TEMPERATURE

• DECREASE OF PRESSURE

• ADDITION OF VOLATILES

• ADDITION OF OXYGEN

IGNEOUS ROCKS are commonly found in the surface and beneath the Earth, specifically in convergent boundaries, divergent boundaries, subduction zones and hot spots.

• TRUE

• FALSE

Gabbro, diorite and granite are example of what kind of igneous rocks?

• INTRUSIVE

• EXTRUSIVE

Obsidian, basalt and scoria are example of what kind of igneous rocks?

• INTRUSIVE

• EXTRUSIVE

Ultramafic igneous rocks have the following characteristics except_.

• low silica content, less than 60%

• magma has very low viscosity

• black to olive green color

• high density

  contains pyroxene and olivine minerals

Felsic igneous rocks have the following characteristics except_.

• very high silica content, more than 65%

• low viscosity

• light color

• low density