Earth's Layers Overview

Questions and Answers

What are the seven layers of the Earth in order from the surface to the center?

Crust, Upper Mantle, Lower Mantle, Outer Core, Inner Core, Lithosphere, Asthenosphere

Crust, Lithosphere, Asthenosphere, Upper Mantle, Lower Mantle, Outer Core, Inner Core (correct)

Crust, Lithosphere, Asthenosphere, Upper Mantle, Lower Mantle, Inner Core, Outer Core

Crust, Upper Mantle, Outer Core, Inner Core, Lithosphere, Asthenosphere, Lower Mantle

Which of the following sequences lists the layers of Earth from most dense to least dense?

Crust, Lithosphere, Asthenosphere, Upper Mantle, Lower Mantle, Outer Core, Inner Core

Inner Core, Outer Core, Lower Mantle, Upper Mantle, Asthenosphere, Lithosphere, Crust (correct)

Asthenosphere, Upper Mantle, Lower Mantle, Inner Core, Outer Core, Lithosphere, Crust

Outer Core, Lower Mantle, Inner Core, Upper Mantle, Asthenosphere, Lithosphere, Crust

What are the three main layers of the Earth?

The crust, the mantle, and the core.

What is the definition of the crust?

The thin and solid outermost layer of the Earth above the mantle; the layer of rock that forms Earth's outer surface. Signup and view all the answers

What is the mantle?

The layer of hot, solid material between Earth's crust and core. Signup and view all the answers

What is the outer core?

The completely liquid layer of Earth; consists of liquid metal. Signup and view all the answers

What is the inner core?

The solid layer made of solid metal. Signup and view all the answers

What is the lower mantle also known as?

Mesosphere. Signup and view all the answers

What is the upper mantle also referred to as?

Asthenosphere. Signup and view all the answers

What is the core?

The central part of the Earth below the mantle. Signup and view all the answers

Study Notes

Earth's Layers

Seven distinct layers from outermost to innermost: crust, lithosphere, asthenosphere, upper mantle, lower mantle, outer core, inner core.
Layers organized by density: inner core is the most dense, followed by outer core, lower mantle, upper mantle, asthenosphere, lithosphere, and crust as the least dense.
The Earth is primarily divided into three main sections: crust, mantle, and core.

Crust

The crust is Earth's thinnest, solid outermost layer, which serves as the outer surface composed of various types of rock.

Mantle

Located between the crust and the core, the mantle consists of hot, solid materials. It is further categorized into upper and lower mantle.
Upper mantle (asthenosphere): Contains solid rock and is relevant to tectonic activity, connects to the crust.
Lower mantle (mesosphere): Composed of solid rock under high pressure and temperature.

Outer Core

The outer core is a completely liquid layer made up of molten metal, contributing to the Earth's magnetic field.

Inner Core

The inner core is a solid layer primarily composed of iron and nickel, under immense pressure at Earth's center.

Core

The core is the central region of the Earth, situated directly beneath the mantle, comprising both the inner and outer core.

Description

Explore the fascinating layers of the Earth, including the crust, mantle, and core. This quiz covers the distinct characteristics and organization of each layer, from the outermost crust to the innermost inner core, focusing on their composition, density, and geological significance.