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An aurora is caused by the streams of electrified particles (which are emitted by the sun) trapped in the magnetic field of the earth. It is produced when this magnetosphere is disturbed by the solar wind carrying the charged particles. ... They generally occur in a band known as 'auroral zone'.
- How are aurora colors produced?
- What creates a aurora?
- What is aurora on Earth?
- What is an aurora and how is it formed for kids?
- What elements are in auroras?
- Can auroras be white?
- How does aurora look like?
- What causes Southernlights?
- How often do auroras occur?
- Which layer is responsible for aurora formation?
- How do auroras work kids?
- Can aurora be seen in India?
- What is the difference between aurora and northern lights?
- Do other planets have auroras?
- What are the phenomenon of auroras?
How are aurora colors produced?
The aurora is caused by charged particles in the solar wind colliding with atmospheric atoms and ions. ... Atomic oxygen is responsible for the two main colors of green (wavelength of 557.7 nm) and red (630.0 nm). Nitrogen causes blue and deep red hues.
What creates a aurora?
When the electrons reach Earth's thin upper atmosphere, they collide with nitrogen and oxygen molecules, sending them into an excited state. The excited electrons eventually calm down and release light, which is what we see as the aurora.
What is aurora on Earth?
An aurora (plural: auroras or aurorae), also known as the polar lights or aurora polaris, is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
What is an aurora and how is it formed for kids?
Auroras are caused when electrically charged particles (electrons and protons) from the solar wind collide with atoms of atmospheric gases. These interactions take place mainly at high latitudes in oval-shaped zones centered around Earth's magnetic poles.
What elements are in auroras?
The secret to earth's vivid aurora has been fundementally entrusted in two elements: nitrogen and oxygen. These two gases, and they alone, hold the colorful secret of our aurora's flashy hues.
Can auroras be white?
Dec. 25, 2016: Auroras are usually green.
One color that never shows itself, however, is white–that is, not until last night. “I saw white auroras over Tromsø, Norway!” reports veteran observer Markus Varik.
How does aurora look like?
They can look like an orange or red glow on the horizon -- like a sunrise or sunset. Sometimes they may be mistaken for fires in the distance, like the American Indians thought. They can look like curtains or ribbons and move and undulate during the night. Auroras can be green, red or blue.
What causes Southernlights?
The famous Northern and Southern Lights -- Aurora Borealis and Aurora Australis for those Latin lovers among us -- are caused by high-energy particles from the Sun cascading down on Earth. As they near our planet, they interact with Earth's magnetic field, which channels them toward the north and south magnetic poles.
How often do auroras occur?
"Active periods are typically about 30 minutes long, and occur every two hours, if the activity is high. The aurora is a sporadic phenomenon, occurring randomly for short periods or perhaps not at all."
Which layer is responsible for aurora formation?
The aurora (Northern Lights and Southern Lights) mostly occur in the thermosphere. The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere.
How do auroras work kids?
As the protons and electrons from the solar wind hit the particles in the Earth's atmosphere, they release energy – and this is what causes the northern lights. ... Check out this great website Aurora Watch from Lancaster University – it might just help you find them!
Can aurora be seen in India?
No. You cannot see the Northern Lights in India. Northern Lights is visible closer to the arctic circle. This phenomenon is experienced especially in colder regions when the solar flares interfere with the earth's atmosphere producing a brilliant display of light in the sky.
What is the difference between aurora and northern lights?
Polar lights (aurora polaris) are a natural phenomenon found in both the northern and southern hemispheres that can be truly awe inspiring. Northern lights are also called by their scientific name, aurora borealis, and southern lights are called aurora australis.
Do other planets have auroras?
Do other planets have auroras? Any planet with a sufficiently dense atmosphere that lies in the path of the solar wind will have auroras. ... Auroras have been photographed on Jupiter, Saturn, and even on some planets' moons. Our moon doesn't have an aurora because it doesn't have the requisite atmosphere.
What are the phenomenon of auroras?
aurora, luminous phenomenon of Earth's upper atmosphere that occurs primarily in high latitudes of both hemispheres; in the Northern Hemisphere auroras are called aurora borealis, aurora polaris, or northern lights, and in the Southern Hemisphere they are called aurora australis or southern lights.
