APES unit 4

Front

What is an island arc?

Back

A chain of volcanic islands formed at a convergent plate boundary where an oceanic plate subducts beneath another oceanic plate.

Front

What is the O-horizon in soil?

Back

The top layer of soil, rich in organic material and nutrients, crucial for plant growth.

Front

What occurs at a convergent plate boundary?

Back

Plates collide, leading to events such as earthquakes, volcanic eruptions, and mountain building.

Front

What is the primary characteristic of the Indian Plate that allows it to move under the Eurasian Plate?

Back

It is denser.

Front

What type of geological event is commonly associated with convergent boundaries?

Back

Earthquakes.

Front

Define a divergent plate boundary.

Back

A boundary where two tectonic plates move away from each other, often resulting in the formation of new crust.

Front

What is a transform plate boundary?

Back

A boundary where two plates slide past each other horizontally, causing friction and earthquakes.

Front

What is subduction?

Back

The process by which one tectonic plate moves under another and is forced into the mantle.

Front

What is the significance of the R-horizon in soil?

Back

It is the bedrock layer beneath the soil, providing minerals and stability.

Front

What is a volcanic eruption?

Back

The release of magma, gas, and ash from a volcano, often occurring at convergent or divergent boundaries.