1. Describe what happens to Plate A as it collides with Plate B? 2. What do you think may happen to the leading edge of Plate A as it continues to move downward? Why? 3. What do you call this molten material? 4. What is formed on top of Plate B?

Question

Anu Bhardwaj · Accepted Answer

1. Describe what happens to Plate A as it collides with Plate B?

Plate A, which is denser (usually oceanic crust), is forced beneath Plate B (usually continental crust).
This process is called subduction.

2. What do you think may happen to the leading edge of Plate A as it continues to move downward? Why?

As Plate A sinks deeper into the mantle, the leading edge melts due to high temperature and pressure, as well as water released from minerals.
This melting occurs in the subduction zone.

3. What do you call this molten material?

The molten material formed from the subducted plate and mantle is called magma.

4. What is formed on top of Plate B?

The magma rises through cracks in Plate B, leading to the formation of a volcanic arc (if on land) or island arc (if in the ocean).
In addition, mountain ranges and volcanoes are formed.

Summary:

Plate A is subducted under Plate B.
The leading edge melts as it moves downward due to heat and pressure.
The molten material is called magma.
On Plate B, volcanoes and mountain ranges form.

Chemistry

Chemistry

Anu Bhardwaj

Answer

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