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What are the layers of the Earth? What are the characteristics ..., Exercises of Earth Sciences

These five layers are the: Lithosphere, Asthenosphere,. Mesosphere, Outer Core, and. Inner Core. Look At My Old Chevy ...

Typology: Exercises

2021/2022

Uploaded on 09/12/2022

mathieu
mathieu 🇮🇹

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What are the layers of the
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What are the characteristics
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Download What are the layers of the Earth? What are the characteristics ... and more Exercises Earth Sciences in PDF only on Docsity!

What are the layers of the

Earth?

What are the characteristics

of each layer?

The Composition of Earth

  • The Earth is divided into several layers with different composition and physical properties.
  • Composition: Earth’s layers are made of different mixtures of elements.
  • Physical Properties: Temperature, density, and viscosity (ability to flow).

The Composition of Earth

  • The lightest materials make up the outermost layer. The more dense material make up the inner layer.

The Crust

  • Top layer is primarily granite. Bottom layer is primarily basalt.
  • Two types of crust: Continental and Oceanic.
  • Both layers found under continents.
  • Only basalt layer under the oceans.

Continental vs. Oceanic Crust

  • Makes up Earth’s continents.
  • Thickest layer of the Earth’s crust.
  • Least Dense.
  • Composition similar to Granite. - Makes up the ocean floor. - Not as thick as continental crust. - More dense than continental crust. - Composition similar to Basalt.

Mantle

  • Scientists have been able to examine the molten rock from active ocean volcanoes to gather most information about this layer.
  • It is made up mostly of iron and magnesium.
  • Temperatures range from 870°C to 2200 °C.

Core

  • The core extends from the bottom of the mantle to the center of the Earth.
  • Approximately 33% of the Earth’s mass.
  • This layer is divided into two parts: the liquid outer core and the solid inner core.

The Mechanical Layers

  • The Earth can be divided into five main mechanical layers.
  • These five layers are the: Lithosphere, Asthenosphere, Mesosphere, Outer Core, and Inner Core.

Look At My Old Chevy & Isuzu Car.

The Asthenosphere (AT)

  • The soft layer of the mantle on which the lithospheric plates move.
  • It is made of solid rock like putty that flows very slowly – about the same rate your fingernail grows.

The Mesosphere/Mantle (MY)

  • The strong, lower part of the mantle.
  • The middle layer.
  • Extends to the Earth’s core.

Inner Core (ISUZU CAR)

  • 1216 kilometers thick
  • Solid (Due to pressure from upper layers.)
  • Composed of iron.
  • Hotter than the Sun!!

A drilling rig can dig down 6

kilometers. What layer of Earth

would you more than likely be

in?