It isn't exactly known who discovered it first, but the earliest claim of earth being round rather than flat was posed by Pythagoras sometime around 500 B.C. He argued that if the moon was round the Earth should be as well.
After that, his claim was proven true by a man named Anaxagoras at around 500-430 B.C when he brought up solar and lunar eclipses. The shape of Earth's shadow on the moon was also used as evidence that the Earth was round.
And finally, in 350 B.C the great Aristotle declared that the Earth was a sphere based on constellations you can see if you travel farther from the equator. Over the next hundred or so years, Aristarchus and Eratosthenes actually measured the size of the earth.
For the water currents flow from the equator to the poles the presence of the unequal solar heating and the coriolis force exerted by the rotation of the earth is due to action to take place as the place in the surface of the earth is heated by the sun similar the water are driven by the winds to the east i.e the anticlockwise and to the south in the clockwise direction and this creates pattern of the cold and warm waters being drifted from the top to poles to the equatorial areas.
<u>This up-down movement created by the rotation is a significant life in the balance of the temperatures on the earth. </u>
<u>And hence creates a pattern of the movement of the warm and the cold current in the ocean that heats and respectively warm and cools the temperature of the coastal and with there respective periods.</u>
Volcanoes can release an amount of matter into the atmosphere. The particles will serve as nuclei to help form the water droplets. Following an eruption is usually a heavy rainfall that will encourage plant growth.
It is because a hurricane is the most violent storms on earth. People call these storms by other names such as typhoons and cyclones. Owing to the aircraft which flies at 6000 feet above the ocean level,it could be affected by the tidal wind accompanied by the occurrence of the hurricane.
