Astronomy Essay Example | Topics and Well Written Essays - 500 words - 4

Astronomy - Essay ExampleIf earths internal activities are relate to solar energy, then other planets also should fox such internal activities.The earth grew from the accumulation of planetismals (meteorites and asteroids), over a period of 1-200 million years almost 4.3 to about 4.5 billion years ago. All of the geological operation on the earth today is driven from this initial source of heat at the earths formation, support and abetted by continued radioactive decay of elements in the earths interior. (The Heat History of Earth) The construction of earth is not homogeneous and different parts of earth have different types of layers and even the materials are different at different locations on earth. For example the soil structure of India and that of America are entirely different. Earth is bright with so many radioactive elements like Uranium, Radium, and Plutonium which are decaying continuously liberating huge amount of energy. More over these elements are not distribute d uniformly on earths surface and even then earths internal activities are distributed evenly everywhere. So we can conclude that the internal activity of earth is not because of radioactive decay of elements alone, but it was due to the initial source of heat at the earths formation also.It is an accepted point that earths internal activity has risen in the recent past. It is evident from the increased number of earth quakes, and volcano eruption. Once the earths internal activities finished, there forget be no more earth quakes, tidal waves and volcano eruption and the earth becomes cooled to alarming levels so that its biological activities will also be ended along with the geological activities.There is much evidence that indicates geological vitality of a planet which has played a unfathomed role in the development and evolution of life. (Frias) It is evident from the fact that no other