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What are Northern Lights?
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In this bytes video find out the science behind the dancing colors in the northern and southern hemisphere skies. Also find out what causes them and where is the best place to watch them.

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Daily Trivia

U
Unacademy user
sir kindly explain the difference between p-notes and depository receipts
Hey thanks for the great stuff, can u cover the cyclone part please, how they are named i hv a bit problem with this, thanks anyway hv a good day
Pls make a video on how black hole created ; life - span and its death...
video on life cycle of star thanx ma'm !
Thank u so much for so beautifully explained topics with images n graphs. Please make a vedion on mohanjodaro
why earth magnetic field is weaker at poles ?
Krissh Jeevanigi
9 months ago
no..magnetic feilds are very strongest at poles and weak at equator...
  1. WHAT ARE NORTHERN LIGHTS?


  2. The bright dancing lights of the aurora are actually collisions between electrically charged particles from the sun that enter the earth's atmosphere. Aurora borealis In the north Aurora australis In the south


  3. What causes NORTHERN LIGHTS?


  4. The Northern Lights are actually the result of collisions between gaseous particles in the Earth's atmosphere with charged particles released from the sun's atmosphere o electrons hit air molecules o electrons and ions 0:2 molecules are "excited" molecules give off light as they calm down magnetosphere


  5. The most common auroral color a pale vellowish-green, is produced by oxygen molecules located about 60 miles above the earth


  6. Rare, all-red auroras are produced by high-altitude oxygen, at heights of up to 200 miles


  7. Charged Particles Since about 1880, the connection between the Northern Lights and sunspot activity has been suspected. Aurora Solar Wind Magnetic Field Aurora


  8. Charged Particles Thanks to research conducted since the 1950's, we now know that electrons and protons from the sun are blown towards the earth on the solar wind Solar Wind Aurora Magnetic Field , Aurora


  9. Frequent and explosive collisions happen between gas molecules.


  10. Upper limit 500-1000 km Solar particies collides with the molecules in Earth's atmosphere. Space Station 400 km The lights of the Aurora generally extend from 80 kilometres to as high as 640 kilometres above the earth's surface. Most common upper limilt 250 km Lower limit 85-100 km Airliners 10 km Everest 8 km


  11. Northern Lights can be seen in the northern or southern hemisphere, in an irregularly shaped oval, centred over each magnetic pole.


  12. Best time to watch the NORTHERN LIGHTS?