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What is Earth Science?

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How does the Earth s processes affect our lives and do people affect our environment? What is Earth Science? The study of Earth, including: The processes and forces ... – PowerPoint PPT presentation

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Title: What is Earth Science?


1
What is Earth Science?
  • How does the Earths processes affect our lives
    and do people affect our environment?

2
What is Earth Science?
  • The study of Earth, including
  • The processes and forces that change it
  • The materials from which its made
  • Its long history
  • Its place in the universe

3
The Four Branches of Earth Science
  • Astronomy
  • Meteorology
  • Geology
  • Oceanography

4
Astronomy
  • Study of objects beyond Earths atmosphere

5
Meteorology
  • Study of the air that surrounds Earth

6
Geology
  • Study of materials that make up Earth and the
    processes that form and change these materials

7
Oceanography
  • Study of Earths oceans and the creatures and
    processes within

8
The Four Systems of Earth
  • Earth has 4 interdependent systems
  • Lithosphere
  • Hydrosphere
  • Atmosphere
  • Biosphere

9
Lithosphere
  • Rigid outer shell of Earth
  • Made up of crust and solid portion of mantle
  • Includes oceanic and continental crust

10
Layers of Earths Interior
  • Crust
  • Lithosphere (solid)
  • Mantle
  • Asthenosphere (liquid)
  • Mesosphere (solid)
  • Core
  • Outer Core (liquid)
  • Inner Core (solid)

11
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12
Hydrosphere
  • All the water on Earth, including
  • Oceans - Rivers
  • Seas - Glaciers
  • Lakes - Atmospheric Water
  • Eath is 70 water
  • 97 is saltwater, 3 is freshwater
  • Most freshwater is in glaciers

13
Atmosphere
  • Gases that surround Earth
  • 78 Nitrogen (N2), 21 Oxygen (O2)
  • Rest is
  • Water Vapor - Argon
  • Carbon Dioxide (CO2) - Trace gases

14
Biosphere
  • All organisms on Earth as well as the
    environments they live in
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