Understanding the Mid-Atlantic Ridge

The video explains the dynamic nature of Earth's tectonic plates, focusing on the Mid-Atlantic Ridge. It describes how plates crash and tear apart under the ocean, leading to volcanic activity that forms new oceanic crust. The Mid-Atlantic Ridge, a significant geological feature, stretches from the South Atlantic to Iceland. It serves as a boundary between the North American and European plates, which move apart at a rate of an inch per year, contributing to the ongoing reshaping of Earth's surface.

What happens when tectonic plates tear apart under the ocean?

• They create valleys.

• They form mountains.

• Lava erupts and seals the tear.

• They cause earthquakes.

What is the Mid-Atlantic Ridge primarily composed of?

• A chain of islands.

• A line of underwater volcanoes.

• A series of mountains.

• A deep ocean trench.

Where does the Mid-Atlantic Ridge rise above sea level?

• In the Pacific Ocean.

• In Iceland.

• Near the equator.

• In the South Atlantic.

What marks the boundary between the North American and European crustal plates?

• A desert.

• The Mid-Atlantic Ridge.

• A river.

• A mountain range.

At what rate is the gap between ocean plates filling in?

• An inch a month.

• An inch a year.

• A foot a year.

• A meter a year.