6.E.2.1 Layers of the Earth (snet)

Front

What are the three main layers of the Earth?

Back

The three main layers of the Earth are the crust, mantle, and core.

Front

What is the outer core primarily composed of?

Back

The outer core is primarily composed of liquid metal, mainly iron and nickel.

Front

What is the difference between oceanic and continental plates?

Back

Oceanic plates are thinner and denser than continental plates, which are thicker and less dense.

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 the significance of tectonic plate boundaries?

Back

Tectonic plate boundaries are significant because they are the locations where earthquakes, volcanic activity, and mountain-building occur.

Front

What is the mantle made of?

Back

The mantle is made of solid rock that can flow slowly over time, composed mainly of silicate minerals.

Front

What is the Earth's crust?

Back

The Earth's crust is the outermost layer of the Earth, consisting of solid rock and soil.

Front

What is the core of the Earth composed of?

Back

The core of the Earth is composed of two parts: the outer core, which is liquid, and the inner core, which is solid.

Front

How do scientists study the Earth's interior?

Back

Scientists study the Earth's interior using seismic waves generated by earthquakes, which provide information about the different layers.

Front

What is the role of convection currents in the mantle?

Back

Convection currents in the mantle help drive the movement of tectonic plates by transferring heat from the Earth's interior to the surface.