Two questions which arises in my mind about aurora borealis are:
- Why does aurora borealis occur?
- Why does aurora borealis occur in a particular time of the year?
Answers:
- As solar wind approaches the Earth, it meets the Earth's magnetic field. In the ionosphere, the ions of the solar wind collide with atoms of oxygen and nitrogen from the Earth's atmosphere. The energy released during these collisions causes aurora borealis.
- Aurora borealis is active the whole year. Since it needs to be dark in order to see aurora borealis in the sky, late August/September through the very beginning of April is the best time to go to a destination located in the aurora zone for a chance to see them.
Note: These are the questions which arises in my mind only. It may differ from person to person.
Hope you could understand.
If you have any query, feel free to ask.
Answer:
Gravity
Explanation:
Gravity is a postulate based upon a given factor of proven events, you can always rely on gravity to pull something downwards towards earth.
Submarine Canyon
Submarine Canyon's are steep-sided valley canyons cut into the seabed of the continental slope.
Answer:
Distinction from Tundra Climate
For example, tundra climates usually have a month in which the average temperature rises beyond the freezing point, while this does not occur in polar climates. The hotter month allows the ice in tundra climates to melt, which enable plants and animals to survive.
The Answer is Solar Energy
