Without water, there would be no animals or plants, which carry out photosynthesis and release oxygen, and consequently the oxygen content in the atmosphere would go down. Moreover, the absence of oceans would have serious consequences as they help to keep the Earth's climate moderate by storing heat inside them. …

Gaseous oxygen was created on the Earth 🌎 about 3-5billion years ago. At that time, the UV light of the sun decomposed the water vapour molecules present in the atmosphere, and released oxygen and hydrogen. But a major part of the oxygen immediately reacted with other substances, so that it was no longer available in the atmosphere…

The origin of life on the Earth is a fortunate series of events. The Earth distance from the sun was such that its atmosphere and surface cooled down a moderate level. Liquid water and not just water vapour also formed, and it  did not freeze as the sun was not to far away. The cooling of the Earth gave rise to a kind of…

The Earth, along with the sun and the remaining planets of our solar system, originated around 4.8billion years ago from dust particles, which agglomerated gradually.  At that time, the young Earth was bomardrded by countless meteorites from space. The Earth's interior was molten and volcanoes erupted constantly. But…

ಉತ್ತರ ಮತ್ತು ದಕ್ಷಿಣ ಧ್ರುವಗಳು ಎರಡು ಋತುಗಳನ್ನು ಹೊಂದಿವೆ: ಬೇಸಿಗೆ ಮತ್ತು ಚಳಿಗಾಲ. ಪ್ರತಿ ಋತುವಿನಲ್ಲಿ. ಆರು ತಿಂಗಳವರೆಗೆ ಇರುತ್ತದೆ. ಎರಡು ಋತುಗಳ ನಡುವಿನ ವ್ಯತ್ಯಾಸವು ತಾಪಮಾನಕ್ಕಿಂತ ಹಗಲಿನ ವಿಷಯವಾಗಿದೆ.  ಎರಡೂ ಋತುಗಳು ತಂಪಾಗಿದ್ದರೂ, ಧ್ರುವಗಳಲ್ಲಿ ಬೇಸಿಗೆಯಲ್ಲಿ ತಾಪಮಾನವು ಚಳಿಗಾಲದಲ್ಲಿ ಕಡಿಮೆ ಇರುತ್ತದೆ.  ಬೇಸಿಗೆಯಲ್ಲಿ, 24 ಗಂಟೆಗಳ ಸೂರ್ಯನ ಬೆಳಕು ಇರುತ್ತದೆ ಆ…

The axis of rotation of the Earth is tilted, and this can be seen clearly in a globe.  Around  June 21,the axis points clearly towards the sun (see the figures).As a result a large part of the Northern hemisphere is illuminated by a strong sun and day time remains long till the rotation of the Earth cause this area to mo…

When it is 12noon in lndia, it is 3:30pm in Japan. Since the Earth rotate on its axis once every 24hours.during which time all parts of the Earth face the sun one by one; I.e.,the the time is 12noon at all places turn by turn. Such a 'time shift 'takes place between many countries. Between India 🇮🇳 and Japan it is 3hours a…

One rotation of the Earth takes one day. If at 12noon the sun is at the nighest point in the sky, then after 24 hours it will come back again to the same position. It was the Babylonians who first divided the day into 24hours.they could have counted the hours from 1to10 , then to 20 ,and so on, but instead they calculated from 1to 6…

The rotation of the earth on its axis causes the alternation of day and night. The Earth also revolves around the sun. As result of both these movements, the Earth does not get continuous light from the sun . This means when countries such as India 🇮🇳faces the sun and has a bright day, the areas on the other side of th…

Water evaporates when the sun shines on oceans, seas, or wet grounds or when wind blows over them. The water vapour rises up and gets converted again in to tiny droplets on reaching the cold heights of the sky.  these tiny droplets from clouds which are carried here and there by the wind. If they rise further, such as on…

Hot and cold ocean currents affect the climate of the. Land masses along their course. The Agulhas current,for instance, long prevented Portuguese sailors from reaching India. Ocea currents also affect temperatures all across the world. The current that brings warm water up the North Atlantic Ocean and blacking ships from entering a…

The trade wind is a wind that blows through out the year in the tropics,a broad belt around the equator. In the northern hemisphere, it blows from the northeast to the equator, and in the southern hemisphere, it blows from the southeast to the equator. The sun, being directly overheard, is very strong and heats up the air in the equ…

Humans being build roads and parking spaces, harness rivers, remove brushes from margins of fields.As water does not seep through concrete and asphalt, floods increase and the ground water level drops. The wind blows unhindered over the arable lands shorn of trees 🌳and blushes and erodes the soil. In some countries, entire stretche…

A thick, moving layer of ice 🧊 act like a huge plug.in the ice age, thick streams of ice which were several kilometres long,moved from Scandinavia to wards the south, scarping and leveling the land below them. Even today, this is an ongoing natural process in the landscapes of Finland and North Germany. Ice also shapes landscapes b…

Volcanoes are natural phenomenon that occur everywhere, but some places are more prone than the other. The molten rock and gas in the mentle called magma  pushes its way upwards and pour to the surface through cracks in the crust. This is a volcano. There are different types of Volcanoes;some are explosive o…

Seas arise at places where the earth's crust cracked open due to expansion. Around 200million years ago the Atlantic was formed in this way. Today in East Africa, a crack from Malawi toethiopia has formed as a result of the eruption of a volcano 🌋. If the soil sinks further, water from the areas Will enter the ereg…

This discovery is credited to the German geologist Alfred Wegener.He not only discovered that coastline of South America fits very well against that of Africa but also showed that the fossils  in both the coastal region are similar. He also proposed another idea:about 300 million years ago there must have been a single, continuous l…

About 3000years ago people believed that the earth was flat. But people wondered why ships disappeared at the horizon. Sailors too returned from journeys and were proof that ships did not fall off the edge of the earth. The simplest explanation 👌was:the earth must be round. The final proof came in the year 1522after the expedition…

Caves and Maines go only up to 1-2km inside the earth. Even the deepest wells of the world, such as the one 12km deep in the Russian kola penninusula or the 9km-deep one in the upper platinate, hardly scratch the earth's crust. One can "look "deep inside the earth 🌎in the aftermath of earthquakes or by creating nucle…