Earth is the planet on which we live.
Earth is the third planet from the Sun.
Earth is the fifth largest of the nine planets—in size and mass.
Earth is rocky, big and sturdy.
Earth is almost an oblate spheroid in shape.
Earth is home to millions of species of life forms including us.
Earth is unique in this respect.
Earth is the densest major body in the solar system.
Earth is referred to as the blue planet.
Earth is more than 4.5 million years old.
Earth is symbolized with a cross inside a circle.
Earth has the highest gravity.
Earth has a temperature range from (-69 degrees C to 58 degrees C)
Earth’s surface(71%) is covered by salt water oceans.
Earth’s remaining portion consists of 5 continents viz.
1. Eurasia (Europe and Asia)
2. America (North and South America)
and some islands.
Earth’s daily rotation causes day and night.
Earth’s axis is tilted to the extent of 23.4degrees.
Earth is flattened at the poles and ate covered by ice.
Earth takes 24 hours to complete a rotation on its axis.
Earth takes 365days to complete an orbit around the Sun.
Earth’s orbit around the Sun is an oval shaped ellipse.
Earth’s atmospheric composition is roughly as follows:
Nitrogen—78%; Oxygen—21%; and traces of Argon,
Carbon-di-oxide, Water vapour and others.
Earth is surrounded by Air for nearly 160kms.above,
Earth has a ozone layer.
Earth has a magnetic field which is very strong.
Earth’s these two layers block the harmful solar radiation.
Earth’s interior remains active with a solid iron core—7100kms wide.
Earth’s mantle is above this core which is 2900kms. thick.
Earth’s temperature of the outer core is about 3700 to 4300degrees C.
Earth’s temperature of the inner core reaches to 7000degrees C
which is hotter than the surface of the Sun.
Earth is solid because of the enormous pressures found at the
Super-hot inner core.
Earth is 149,597,890 kms. when closest to the Sun (Perihelion)
Earth is 152,100,000 kms. when farthest (Aphelion) .
Earth is warmed by Water vapour, Carbon-di-oxide and other gases
trapping heat from the Sun which is termed as the “Green House” effect.
Earth would probably be too cold for life to exist without this effect.
Earth’s surface is subject to extreme weather conditions such as Cyclones,
Typhoons, Hurricanes and Storms.
Earth’s surface is also subject to Earthquakes, Landslides, Tsunamis, Blizzards,
Volcanic eruptions, Wild fires, etc, .
Earth has a diameter of roughly 13000 kms.
Earth is oblate spheroid because gravity pulls matter into a ball.
Earth’s only natural satellite is the Moon.
Earth interacts with the Sun and Moon.
Earth’s mineral resources and the products of the biosphere contribute resources
that are used to support a global human population.
Earth’s human population are grouped into about 200 independent sovereign states
which interact through diplomacy, travel, trade, and military action.