Internal Structure of the Earth

The Earth can be divided into two ways: mechanically or chemically. Mechanically (rheologically), it can be divided into: Lithosphere Asthenosphere Mesospheric mantle Outer core Inner core Chemically, it can be divided into: Crust Mantle (subdivided into upper and...

Overview of Physical Geography

Major domains of the earth are a fundamental idea in geography. The earth’s surface is where the three main components of the environment come together. These components are: solid (lithosphere), gaseous (atmosphere), liquid (hydrosphere), and biosphere. These...

Motions of the Earth

Earth has primarily two types of motions- Rotation and Revolution. Rotation Earth rotates from west to east along its axis. It takes 24 hours to complete one rotation. The rotation causes the cycle of days and nights. The line dividing day and night on the globe is...

Concept of Latitudes, Longitudes

The Earth – Facts at a Glance Earth is the only known planet with an existence of life. It is a blue planet because ⅔ of its surface is covered with water. It is the third planet from the sun and the densest planet in the solar system. It is the largest of the...

Structure of the Sun

The Sun is a large ball of hot ionized gas that shines on its own. It is 109 times wider than the Earth and can hold 1.3 million Earths. The Sun does not have a solid surface or core. It is mostly made of hydrogen and helium (98%) and is so hot that matter can’t...
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