Layers of Earth and Plate Tectonics

Front

What is Pangaea?

Back

Pangaea is the name of the great landmass that existed millions of years ago, which later broke apart to form the continents we have today.

Front

What happens to the oceanic crust at a subduction zone?

Back

The oceanic crust moves under the continental crust because it is denser (has more mass).

Front

What layer of the Earth is represented by the letter B in a diagram?

Back

The mantle.

Front

What are the two types of waves formed during an earthquake?

Back

P-Waves (Primary Waves) and S-Waves (Secondary Waves).

Front

Which layer of the Earth is fully liquid?

Back

The outer core.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and the upper mantle.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid and extremely hot, while the outer core is liquid and composed mainly of iron and nickel.

Front

What is plate tectonics?

Back

Plate tectonics is the theory that explains the movement of the Earth's plates and how they interact at their boundaries.

Front

What is a tectonic plate?

Back

A tectonic plate is a large slab of solid rock that makes up the Earth's lithosphere and moves over the semi-fluid asthenosphere.

Front

What is a fault line?

Back

A fault line is a fracture in the Earth's crust where blocks of land have moved past each other.