Interesting things about nature, very urgent!

1, aurora:

Aurora is a colorful luminous phenomenon, which appears because charged particles from the sun enter the earth's magnetic field, and bright and beautiful glow appears at night at high altitude near the north and south poles of the earth. It is called the Southern Lights in Antarctica and the Northern Lights in the Arctic. Aurora borealis is produced by exciting (or ionizing) molecules or atoms in the upper atmosphere by high-energy charged particles from the earth's magnetosphere or the sun.

2. Tides:

Tidal phenomenon is a natural phenomenon in coastal areas, which refers to the periodic movement of seawater under the tidal force of celestial bodies (mainly the moon and the sun). Traditionally, the vertical fluctuation of sea surface is called tide, while the horizontal flow of sea water is called tide. Our ancestors called the high tide in the morning and the high tide in the evening as high tide to indicate the moment of tide.

3. fire tornado

Fire tornado, also known as fire monster or fire whirlwind, is a rare flame phenomenon under some special conditions. Generally, fire tornado usually occurs in the jungle flame, and forms a vertically rotating pillar of fire under specific air flow and temperature conditions. Fire tornado can be 30-200 feet high and 10 feet in diameter, but it will only last for a few minutes. If the wind speed is high, fire tornado may last longer.

4. Milk Cloud:

Mammary cloud, also known as cumulus mammalis, is composed of numerous baggy cloud structures at the bottom of the cloud. It is mainly made of ice and can extend for hundreds of miles in any direction. However, some breast cloud structures can remain still for 10- 15 minutes. Whenever milky white clouds appear, it indicates the arrival of bad weather, which is often a precursor to storms or other bad weather.

5. Ice ring

In very cold countries or regions, scientists generally believe that the ice ring is formed by the accumulation of ice in the central area of the water surface, not at the edge. A slowly flowing river can form a slowly rotating vortex, and when the water rotates, an ice ring is formed. The edge of the ice ring melts slowly until cracks appear on the ice ring, which will lead to the decline of the ice ring. The largest diameter of these ice rings can reach more than 500 feet.