Inside Earth 1.1 Earth

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Inside Earth1.1Earths Interior
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Geologists

• Geologists scientists who study forces that
  shape Earth

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2 kinds of Forces

• Constructive force build up
• Example
• Mountains and
• Volcanoes

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2 kinds of Forces

• Destructive force wear down
• Example
• Erosion

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Geologists study

• Earths 7 continents

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What happens when you dive deep in a pool?
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What happens when you dive in a pool?

• Increase pressure

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Same as you go to the center of the Earth

• Increase pressure
• and
• Increase temperature

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3 Main Layers of the Earth

• Crust outer layer
• Mantle middle
• Core center

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Crust

• Rocks
• Mountains and
• Oceans

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Mantle

• 2 parts

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Mantle

• 2 parts
• Rigid UPPER mantle
• Soft LOWER mantle

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Lithosphere

• Rigid UPPER mantle and the crust make up the
  Lithosphere

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Asthenosphere

• Below the rigid Lithosphere is the Asthenosphere
• hot tar-like
• soft like roasted marshmallow

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Core

• 2 parts
• Outer Core is molten metal

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Core

• 2 parts
• Outer Core is molten metal
• Inner Core is a dense ball of solid metal
• (iron and nickel)

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Earths Magnetic Field

• Earth has a magnetic field just like a bar magnet

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Earths Magnetic Field

• Just like a bar magnet has a magnetic field that
  attracts iron filings in a circular pattern,

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Earths Magnetic Field

• Just like a bar magnet has a magnetic field that
  attracts iron filings in a circular pattern,
• Earth also has a magnetic field with a similar
  magnetic field attraction

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Earths Magnetic Field

• So when you use a compass, the north-seeking
  needle of the compass aligns to Earths magnetic
  north pole