Layers of the Earth

Front

What is the outer core of the Earth?

Back

The outer core is a liquid layer composed mainly of iron and nickel, located beneath the mantle and above the inner core.

Front

What layer(s) of the Earth make up the asthenosphere?

Back

The asthenosphere is part of the upper mantle, which is semi-fluid and allows for the movement of tectonic plates.

Front

Where do convection currents occur within the Earth?

Back

Convection currents occur in the mantle, where heat from the inner core causes the mantle material to move.

Front

What happens to temperature as we move from the crust to the inner core?

Back

The temperature increases as we move from the crust to the inner core.

Front

What is the correct order of Earth's layers starting from the surface?

Back

The correct order is: crust, mantle, outer core, inner core.

Front

What is the composition of the inner core?

Back

The inner core is primarily composed of solid iron and nickel.

Front

What is the role of the mantle in Earth's geology?

Back

The mantle plays a crucial role in tectonic activity and convection currents, influencing plate movements.

Front

What is the difference between the lithosphere and the asthenosphere?

Back

The lithosphere is the rigid outer layer of the Earth, while the asthenosphere is a semi-fluid layer beneath it.

Front

How thick is the Earth's crust on average?

Back

The Earth's crust is about 5 to 70 kilometers thick, varying between oceanic and continental crust.

Front

What is the significance of the Moho boundary?

Back

The Moho boundary separates the Earth's crust from the underlying mantle, marking a change in composition.