12th grade earth science

To avoid the risk of electric shocks, the metal of an electrical appliance is 'earthed'. Earthed means to connect the metal case of the appliance to the earth (at zero potential) by means of a metal wire (copper) called the earth wire. One end of the ea..

Structure of the earth system Earth's history Earth in the solar syste..

Structure of the earth system Earth's history Earth in the solar syste..

Properties of earth materials Objects in the sky Changes in earth and sk..

Let m be the mass of a body on Earth. Its weight on Earth is given by the equati..

'Geo' means earth and 'thermal' means heat. Thus geothermal energy is that heat energy obtained from hot rocks present inside the earth..

Question: What is greenhouse effect? Answer: Earth is surrounded by an envelope of gases. Most of the solar radiation that reaches the earth is reflected back. However, some of the heat is absorbed by the gases like carbon dioxide that form an insulating layer around ..

The acceleration produced in any body due to the gravitational pull of the Earth does not depend on the mass of the bod..

The expression for acceleration due to gravity ..

Force of Gravitation - Drop a stone from a height. What do you observe? The stone which was initially at rest starts moving towards the ground and attains a maximum speed just before it touches the ground. The stone is not moving with uniform speed. Its speed keeps changing at every instant, which ..