SEATWORK 1.6

What process occurs if there are formation and movement of magma under the earth’s crust?

• decompression

• melting

• heat transfer

• partial melting

What term should be used to describe a semi-liquid hot molten rock located beneath the Earth?

• lava

• rocks

• magma

• sand

In what part of the earth does magmatism happen?

• Asthenosphere

• Earth’s core

• Earth’s crust

• Lithosphere

What do you call the semi-liquid hot molten rocks found on the surface of earth once the volcano erupts?

• lava

• sand

• magma

• rocks

Which of the following is NOT a factor of partial melting?

• addition of volatiles

• an increase in temperature

• an increase in pressure

• decrease in pressure

During partial melting, which of the following minerals melt last?

• Biotite

• Quartz

• Feldspar

• Diamond

What are the two most abundant elements in magma?

• Oxygen and Iron

• Silicon and Aluminum

• Oxygen and Magnesium

• Silicon and Oxygen

During partial melting, which of the following minerals melt first?

• Biotite

• Quartz

• Feldspar

• Both B and C

During partial melting of magma, where does heat transfer take place?

• convergent boundary

• subduction zone

• mid-ocean ridge

• all of the above

What will happen to the temperature of rocks during partial melting?

• decreases

• remains the same

• increases

• all of the above