Difference between revisions of "Human earth shapers/ETHS101/Earthsystems/Atmosphere"

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|title= Think and Share
 
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[[File:Exceptional red sunsets in London,.jpg|centre|400px|Exceptional red sunsets in London,]]
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[[File:Exceptional red sunsets in London,.jpg|right|320px|Exceptional red sunsets in London,]]
  
 
LEARNING ACTIVITY - SHARE an image of a sunset around you.  
 
LEARNING ACTIVITY - SHARE an image of a sunset around you.  

Revision as of 03:01, 28 March 2019

Atmosphere

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Did you know
Image Credit: NASA/GSFC/Reto Stöckli, Nazmi El Saleous, and Marit Jentoft-Nilsen (Public Domain)
  • The atmosphere forms a protective blanket around Earth and makes it a habitable planet for life. It is the air we breathe and plays a key role in the weather we all like to complain about.
  • The atmosphere encompass all the gases that swirl around the Earth.
  • The blue colour of the sky is because of dispersion and absorption of the Sun's radiation by molecules in the atmosphere.
  • The red colour in the morning and the evening is because of particles, such as dust, smoke or ash.


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Think and Share
Exceptional red sunsets in London,

LEARNING ACTIVITY - SHARE an image of a sunset around you.



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How many Atmospheres?

If we told you earth has had two atmospheres, would you believe us?

  • Earth has had two atmospheres
    • True
      • Correct. The first was lost when a small planet collided with Earth to form the Moon. The second atmosphere was outgased from the interior of Earth. It was retained by gravity and protected from solar winds by the Earth’s magnetic field.
    • False
      • Incorrect. Had to believe right? Try again and learn why the earth has had two atmospheres.