Saturday, April 5, 2014
This earth of ours
The earth is amazing. Really, truly amazing. Whenever I sit in the backyard on the grass and just think about the earth it amazes me every time. I mean look at us, feet firmly on the ground, breathing the air, swimming in the ocean, watching the animals frolic and the plants grow.
Here are nine little facts about this Earth of ours...
All of the things we need to survive are provided under a thin layer of atmosphere that separates us from the uninhabitable void of space. This atmosphere extends out 10,000kms.
Over 70 percent of Earth's surface is covered with water, with the remainder consisting of continents and islands which together have lakes and other sources of water that contribute to the hydrosphere.
Earth is the only planet in the Solar System to have water in its three states of matter; solid (ice), liquid (sea, rain etc) and gas (clouds).
Earth is almost five billion years old!
The length of time it takes for Earth to orbit the Sun is 365 and a quarter days. To make up this extra quarter, we have a leap year every four years.
The centre of the Earth, its core, is molten. This means that it is liquid rock which sometimes erupts onto the surface through volcanic eruptions. The core is 7,5000 degrees Celsius, hotter than the surface of the Sun.
The earth isn't a perfect sphere. It spins, so it's a flattened at the poles a little bit.