Ch 12: Tectonic Plates and Geological History

The parts or fragments that form the Earth's crust or lithosphere, they are constantly moving.

• Tectonic plates

• Convergent Boundary

• Divergent Boundary

• Transform Boundary

The tectonic plates rest on the mantle, which is made of magma or melted rock. The heat of Earth's nucleus makes internal pressure rise. This causes the mantle to shift, which alters the shape of the lithosphere. Because of the colliding tectonic plates, the surface of the lithosphere changes.

• True

• False

Edges where two plates meet. They can be convergent, divergent, or transform.

• plates boundaries

• tectonic plates

• earthquakes

The boundary where two tectonic plates move toward each other. Also known as destructive boundaries.

• convergent boundary

• divergent boundary

• transform boundary

Continental vs. Continental is a collision where two continental plates meet head-on. Since neither plate is stronger than the other, they crumple and are push up. This can lead to the formation of a huge, high mountain ranges such as the Himalayas. What type of boundary is?

• convergent boundary

• divergent boundary

• transform boundary

Tectonic plates move away from each other on this type of tectonic plate boundary. Also known as constructive boundaries.

• convergent boundary

• divergent boundary

• transform boundary

Zones where the magma that creates the lithosphere rises, molten rock from the mantle erupts along the opening, forming new crust.

• convergent boundary

• divergent boundary

• transform boundary

The Great Rift Valley in Africa, the Red Sea, and the Gulf of Aden are all formed as the result of __________ motion.

• convergent boundary

• divergent boundary

• transform boundary

The earthquakes that occur along these zones are called spreading centers are relatively small.

• convergent boundary

• divergent boundary

• transform boundary

Convergent boundaries movement can cause earthquakes, volcanoes, creation of mountains.

• True

• False