6th-Sc-Ch12-Rev

What was the name of the single continent that comprised all of today’s continents, according to tectonic plate theory?

• Due to the presence of fossils common to

  different continents.

• Cracks or fissures in a plate, caused by motion inside the lithosphere.

• It states that the surface of the geosphere consists of a rigid layer called the lithosphere, which in turn is

  fragmented into plates.

• Pangea

What is the tectonic plate theory?

• Due to the presence of fossils common to

  different continents.

• Cracks or fissures in a plate, caused by motion inside the lithosphere.

• It states that the surface of the geosphere consists of a rigid layer called the lithosphere, which in turn is

  fragmented into plates.

• Pangea

How do fossils lead us to believe that the continents used to be joined together?

• Due to the presence of fossils common to

  different continents.

• Cracks or fissures in a plate, caused by motion inside the lithosphere.

• It states that the surface of the geosphere consists of a rigid layer called the lithosphere, which in turn is

  fragmented into plates.

• Pangea

What are geological faults?

• Due to the presence of fossils common to

  different continents.

• Cracks or fissures in a plate, caused by motion inside the lithosphere.

• It states that the surface of the geosphere consists of a rigid layer called the lithosphere, which in turn is

  fragmented into plates.

• Pangea

Describe how these geological features move: oceanic ridges

• Tectonic plates meet and collide. One of them sinks below the other, creating deep trenches.

• The magma that creates the lithosphere bursts out of them and the plates separate,

  creating mountains on the ocean bottom.

• Fissures are created in a plate, and this causes earth tremors.

Describe how these geological features move: subduction zones

• Tectonic plates meet and collide. One of them sinks below the other, creating deep trenches.

• The magma that creates the lithosphere bursts out of them and the plates separate,

  creating mountains on the ocean bottom.

• Fissures are created in a plate, and this causes earth tremors.

Describe how these geological features move: geological faults

• Tectonic plates meet and collide. One of them sinks below the other, creating deep trenches.

• The magma that creates the lithosphere bursts out of them and the plates separate,

  creating mountains on the ocean bottom.

• Fissures are created in a plate, and this causes earth tremors.

Earthquakes can be predicted and prevented.

• True

• False

Earthquake damage can be reduced if an emergency action plan is developed.

• True

• False

Before an earthquake, we should all pay attention to the weather forecast.

• True

• False