the earth going around the sun

Month by month, as the earth orbits the sun, we can watch the constellations move across the sky. In summer, in northern skies, we can see the little bear with its long tail. In winter, a very different pattern of stars lies above. Orion, the hunter, one of the most beautiful co..

Astronomy has been a fascinating subject from ancient times. The geocentric system (around the 2nd century A.D.) considered the Earth to be at the centre with the sun and other planets revolving around i..

It is used in measuring long distances converted with solar studies in astronomy. 1 Au = 1.496 x 10 1 1 m, the mean distance between the sun and the Earth..

Question: Give an example of a body moving with a uniform speed but variable velocity. Answer: A body moving along the circumference of a circle. e.g., Revolution of the earth around the sun..

Sunlight falling on the earth's surface equals 50,000 times the energy used each year by man. Almost all our energy comes from sun. The sun's nuclear energy is responsible for the tidal energy, heat energy stored in water, the chemical energy stored in plants, and the ..

Hydrogen is the most abundant element in the universe. About half the mass of sun and stars is due to hydrogen. Jupiter and Saturn planets consist mainly of hydrogen. It is common on earth in water, coal, petroleum, clay, animal and vegetable matter that constitutes 0.9% b..

. There are weather satellites which monitor wind speed, cloud temperature and height, sea temperature, etc. This data helps to predict climate changes. Spy satellites use powerful telescopes to watch for potential threats. There are also Remote Sensing Satellites. Remote sensing refers to collecti..

The parts of atmosphere where temperature increases with increasing altitude are stratosphere and thermosphere. The increase in temperature is important in the region called the stratosphere, which also houses the ozonosphere. As we go upwards from the Earth, a fall of pressure and densi..

Introduction - For thousands of years people have looked up at the stars and wondered what lay beyond them. It was once believed that the earth was the center of the universe and that everything moved around it. It was later discovered that the earth moves around the sun..

Introduction - we are going to identify one of the forces which produces acceleration in all objects on the surface of the Earth irrespective of their mas..