aurora borealis
The aurora borealis is one of the cosmic phenomena in which a group of colors appear in the form of light arcs, which usually extend from east to west (from horizon to horizon), so that the light spreads in the form of multicolored rays as vertical rays of light, and sometimes it is like a thin cloud that covers the sky And among the colors in which the afterglow appears: violet, red, blue, pink, and white, where the colors of the twilight differ depending on the amount of energy carried by the electrons during the collision, and the speed of the colliding electrons, and the afterglow occurs as a result of the collision of fast electrons in space with molecules of oxygen and nitrogen Which are found in the atmosphere, and the aurora can be seen in the regions that are in the form of rings, 4000 kilometers around the magnetic poles of the Earth.
earthquakes
An earthquake is defined as a sudden shaking of the ground, which occurs as a result of the passage of seismic waves through rocks in the ground, and seismic waves are produced due to the energy stored in the earth’s crust, so the rock masses press on each other greatly, which leads to their sliding, so earthquakes often occur as a result of Either biological factors, or because there are narrow areas where the rocks cannot move.
Rainbow
The rainbow is defined as a circle of colors that appear in the sky opposite the sun, and it appears as a result of the sun’s rays falling and passing through raindrops, fog, or mist, and the rainbow is formed in red, orange, indigo, green, blue, and violet.
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Green rays can be observed at sunset at the bottom of the horizon, and they appear as a result of the refraction and dispersion of light in the atmosphere; Which leads to the emergence of different colors, and the green rays last for several seconds, as a green spot appears above the edge of the sun, and in very clear cases it appears in blue color above the upper edge of the sun, and in red color on the lower edge of the sun, so at sunset the green edge is the last thing that disappears From the sun, and it should be noted that it can be observed at sunrise, but it is very difficult because it is difficult to look completely at the sun.
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