ESA Unit 1.2 Earth's Interior * (w/ plate boundaries)

Front

What is the inner core of the Earth?

Back

The inner core is the solid, innermost layer of the Earth, primarily composed of iron and nickel.

Front

What evidence supports the solid structure of the inner core?

Back

P-waves speed up in the inner core, indicating it is solid.

Front

What is the outer core composed of?

Back

The outer core is composed of liquid iron and nickel.

Front

What is the significance of S-waves in understanding the Earth's interior?

Back

S-waves do not travel through liquids, indicating that the outer core is liquid.

Front

What is the theory of Plate Tectonics?

Back

Plate Tectonics is the theory that explains the movement of large blocks of the lithosphere on the Earth's surface.

Front

What are the main components of the Earth's core?

Back

The core is primarily composed of iron and nickel.

Front

What is convection in the context of Earth's interior?

Back

Convection is the process of heat transfer through the movement of fluids, causing substances to rise and fall due to density differences.

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 are divergent boundaries?

Back

Divergent boundaries are tectonic plate boundaries where two plates move apart, often resulting in the formation of new crust.

Front

What is continental drift?

Back

Continental drift is the hypothesis that continents move across the Earth's surface over geological time.