How Is Magma Created in a Subduction Zone

question 28

Multiple Choice

How is magma created in a subduction zone?

• A) Friction between the two plates causes the lithosphere to melt.
• B) Subduction brings one plate to a depth hot enough for minerals in the plate to melt.
• C) Subduction brings one plate to a depth hot enough for minerals to release water; this water causes melting in the overlying asthenosphere.

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Definitions:

Alternation of Generations

A reproductive cycle found in certain plants and algae, involving a sequential occurrence of two distinct forms, one haploid and the other diploid, each giving rise to the other.

Zygote

Diploid cell formed by the union of two gametes; the product of fertilization.

Gametophyte

The sexual phase in the life cycle of plants and algae that produces gametes, typically through mitosis.

Spores

Asexual reproductive or resting cells capable of developing into a new organism without fusion with another cell, often seen in bacteria, fungi, and plants.