LITHOSPHERE
Earth’s crust and the interior of the earth: The earth is almost like a sphere. Its radius is about 6,400 kilometres. There is no scope to observe the interior of the earth by piercing the hard external covering. The geologists…
PERIHELION AND APHELION
The orbit of the earth is an ellipse. Its length is 93,80,51,827 kilometres. The sun is located in the centre or in the focus of the ellipse. Perihelion: In the process of revolution around the sun, the earth on 1st…
DIURNAL AND ANNUAL MOTION OF THE EARTH
Everyday the sun rises in the east and sets in the west. This process led many people in the past to think that the sun is moving and the earth is fixed. The sun moves around the earth. But with…
Study Guide
