ES Semester 1 menu Layers of the earth

Front

What is the lithosphere?

Back

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

Front

What is the asthenosphere?

Back

The asthenosphere is the semi-fluid layer of the mantle located beneath the lithosphere, allowing for the movement of tectonic plates.

Front

What is the main difference between the lithosphere and the asthenosphere?

Back

The lithosphere is rigid, while the asthenosphere is semi-fluid.

Front

What is the primary composition of the asthenosphere?

Back

The asthenosphere is primarily composed of molten rock.

Front

How does the asthenosphere contribute to tectonic plate movement?

Back

The asthenosphere acts as a lubricating layer that allows tectonic plates to move.

Front

What are convection currents?

Back

Convection currents are movements within the mantle caused by the rising and falling of molten material due to density and gravity.

Front

How do convection currents affect tectonic plates?

Back

Convection currents within the mantle cause the Earth's plates to move and shift.

Front

What is the outer core composed of?

Back

The outer core is composed of molten iron and nickel.

Front

How does the Earth's outer core contribute to the magnetic field?

Back

The movement of molten iron and nickel in the outer core generates the Earth's magnetic field.

Front

What is the role of the mantle in plate tectonics?

Back

The mantle provides the necessary heat and movement that drive the movement of tectonic plates.