Inside Earth 1.1 Earth - PowerPoint PPT Presentation

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Inside Earth 1.1 Earth

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Same as you go to the center of the Earth 3 Main Layers of the Earth Crust Mantle Mantle Lithosphere Asthenosphere Core Core Earth s Magnetic Field Earth ... – PowerPoint PPT presentation

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Title: Inside Earth 1.1 Earth


1
Inside Earth 1.1 Earths Interior
2
Geologists
  • Geologists scientists who study forces that
    shape Earth

3
2 kinds of Forces
  • Constructive force build up
  • Example
  • Mountains and
  • Volcanoes

4
2 kinds of Forces
  • Destructive force wear down
  • Example
  • Erosion

5
Geologists study
  • Earths 7 continents

6
What happens when you dive deep in a pool?
7
What happens when you dive in a pool?
  • Increase pressure

8
Same as you go to the center of the Earth
  • Increase pressure
  • and
  • Increase temperature

9
3 Main Layers of the Earth
  • Crust outer layer
  • Mantle middle
  • Core center

10
Crust
  • Rocks
  • Mountains and
  • Oceans

11
Mantle
  • 2 parts

12
Mantle
  • 2 parts
  • Rigid UPPER mantle
  • Soft LOWER mantle

13
Lithosphere
  • Rigid UPPER mantle and the crust make up the
    Lithosphere

14
Asthenosphere
  • Below the rigid Lithosphere is the Asthenosphere
  • hot tar-like
  • soft like roasted marshmallow

15
Core
  • 2 parts
  • Outer Core is molten metal

16
Core
  • 2 parts
  • Outer Core is molten metal
  • Inner Core is a dense ball of solid metal
  • (iron and nickel)

17
Earths Magnetic Field
  • Earth has a magnetic field just like a bar magnet

18
Earths Magnetic Field
  • Just like a bar magnet has a magnetic field that
    attracts iron filings in a circular pattern,

19
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

20
Earths Magnetic Field
  • So when you use a compass, the north-seeking
    needle of the compass aligns to Earths magnetic
    north pole
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