Unit 2 Plate Tectonics Review

Front

What makes a volcano explosive?

Back

The high levels of gas mixed in the lava which has high level contents of silica.

Front

What is the difference between continental drift and plate tectonics?

Back

Plate tectonics explains why Earth's continents are moving; the theory of continental drift did not provide an explanation.

Front

Describe two locations we would find volcanoes at.

Back

Subduction zones and mid-ocean ridges.

Front

What are the two main types of seismic waves?

Back

P-waves (body waves) and S-waves (surface waves); P-waves travel through Earth's inner layers, S-waves move along the surface.

Front

What evidence did Wegener find to support Continental Drift Theory?

Back

Biological and geological similarities between continents.

Front

Define plate tectonics.

Back

The theory that explains the structure and movement of Earth's lithosphere, which is divided into tectonic plates.

Front

What is a subduction zone?

Back

A region where one tectonic plate moves under another, often leading to volcanic activity.

Front

What are mid-ocean ridges?

Back

Underwater mountain ranges formed by plate tectonics, where new oceanic crust is created.

Front

Explain the concept of continental drift.

Back

The hypothesis that continents have moved over geological time and were once joined together.

Front

What is the Ring of Fire?

Back

A major area in the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.