Earth Water Distribution
Earth Physical Characteristics and Water distribution Earth is the planet where we live. It is the third planet among the eight planets of Sun and fifth largest among them. It is the only planet where human and other species can live. Essential substances like air, water and land supports life on earth. Earth is made of rocks and came into existence 4.7 billion of year ago. A day on earth is not 24 hours, its actually 23 hours, 56 minutes, 4 seconds. Earth is the only planet in the Solar System that has a large amount of liquid water. About 29.2% of Earth's surface is land consisting of continents and islands. The remaining 70.8% is covered with water. Because of this, people sometimes call it the blue planet. Earth Physical Characteristics are as : Earth Radius : 6,357 to 6,378 km Earth Circumference : 40,075 km Earth Mass : 5.972 × 10^24 kg Earth Volume :1,083,206,916,846 cubic kilometers Distribution of Water on the Earth The distribution of water on