Earth and Life Science (Magmatism and Metamorphism)

Based on your learnings what is magma?

• composed of semi-liquid hot molten rocks located beneath the Earth, specifically in the melted mantle rock and oceanic plate

• composed of semi- solid rocks located beneath the Earth, specifically in the melted mantle rock and oceanic plate

• composed of semi-liquid hot molten rocks located beneath the Earth, specifically in the core

• composed of semi- solid rocks located beneath the Earth, specifically in the core

Based on your learnings what is magmatism?

• all the statements are correct

• process under the earth’s core where formation and movement of magma occur

• process under the earth’s mantle where formation and movement of magma occur

• process under the earth’s crust where formation and movement of magma occur

Where does the formation and movement of magma take place?

• These happen in the lower part of the Earth’s crust, known as asthenosphere

• These happen in the upper portion of the mantle, known as asthenosphere

• These happen in the lower part of the Earth’s crust and in the mantle, known as asthenosphere

• These happen in the lower part of the Earth’s crust and in the upper portion of the mantle, known as asthenosphere

How is magma formed?

• formed or generated through the process of partial melting

• formed or generated through the process of melting

• formed or generated through the process of solidification

• formed or generated through the process of partial solidification

Rock minerals such as quartz and feldspar begin to partially melt at what temperature?

• 650-850 degrees Celsius

• 750-850 degrees Celsius

• 850-950 degrees Celsius

• 950-1000 degrees Celsius

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

• decrease

• increase

• same temperature

• all of the above

The following are events that occur during melting, EXCEPT:

• increase temperature

• decrease pressure

• decrease temperature

• addition of volatiles

Conduction in mantle happens when heat is transferred from hotter molten rocks to the Earth’s cold crust. What process is being described?

• melting

• decompression melting

• heat transfer

• flux melting

Mantle rocks remain solid when exposed to high pressure. However, during convection, these rocks tend to go upward (shallower level) and the pressure is reduced. What process is being described?

• heat transfer

• flux melting

• decompression melting

• melting

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

• convergent boundary

• mid ocean ridge

• subduction zone

• divergent boundary