Layers of the Earth

What is the layer of the Earth that is semi-fluid and allows tectonic plates to move?

Asthenosphere

As you travel from the inner core to the crust, how would temperature, pressure and density of the material change?

They would all decrease

What is the composition of the Earth’s crust?

It is primarily made up of rocks and minerals, including silicates.

What is the temperature range of the Earth’s inner core?

Approximately 4,000 to 5,500 degree Celsius

What is the main component of the Earth’s inner core?

Iron and Nickel

What happens to pressure as we move from the crust down into the inner core?

Pressure Increases

Which layer is located directly underneath the lithosphere?

Asthenosphere

What are the three main layers of the Earth?

Crust, Mantle, Core

What is the significance of the Mohorovičič discontinuity?

It marks the boundary between the Earth’s crust and the underlying mantle.

What is the difference between the lithosphere and the asthenosphere?

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

What is the role of convection currents in the mantle?

They drive the movement of tectonic plates.

What is the primary characteristic of the mantle?

It is composed of silicate rocks that are semi-solid

What distinguishes physical layers of the Earth?

How rigid each layer is.

What distinguishes chemical layers of the Earth?

The elements and compounds in each layer

What is the outermost layer of the Earth called?

Crust