The Planet Earth represents a water world and from the sun it is the third planet. It features two-thirds covered by ocean. The atmosphere of the earth alone harbours life and is opulent in oxygen and nitrogen that is life-sustaining. The surface of the earth rotates on its axis at 1532 feet per second that is a bit over 1000 mph at the equator. This planet zips at over 18 miles (29 km) per sec around the sun.
- Orbit:24 days
- Diameter:7,926 miles (12,760 km)
- Day:23 hours, 56 minutes
The Planet Earth, the planet is well-known to support an atmosphere with oceans of liquid water on the surface and free oxygen. Earth belongs to the terrestrial planets such as Mercury, Venus and Mars. The gravity points our planet centre, as earth spins, while a centrifugal force pushes it outward. However, as the gravity force is opposing acting perpendicular to the earth axis and it is tilted, the centrifugal force is not opposed to the gravity at the equator. This imbalance makes the gravity push more masses of water and the earth appears with a bulge. The globe’s circumference, at the equator, is 24,901 miles (40,075kms). This is the reason that a person weighs less than while standing at any of the poles.
You assume to be standing still, but actually, you are moving. Based on the globe, you may be spinning more than 1,000 miles per hour. However, people move fastest on the equator, while someone standing on the South or North Pole will stand still.
The Rock Cycle
Earth is recycled. The rock cycle of the earth transforms igneous rocks into sedimentary rocks and metamorphic rocks and it is back again. It is not a perfect cycle, but the basics are that Magma in the earth hardens into rock, while the rock is uplifted in the Tectonic process to the surface and erosion takes off a little. These tiny bits get buried as it is deposited and pressure compacts into sedimentary rocks. As the sedimentary rocks go deeper and get buried that they become metamorphic rocks under the heat and pressure.
The hottest spot is El Azizia, Libya with 136 degrees Fahrenheit (57.8 degrees Celsius) in 1993 on September 13, observed NASA Observatory. the coldest is in Antarctica and the lowest temperature on earth is recorded in Russia’s Vostok Station showing a -128.6 degrees in 1983, July 21.