WELCOME TO MY FUN SCIENCE BLOG

I am Savita Dhutti,a science teacher at a well established public school in India.I welcome all of you to My science mania ! Its a website,I created for sharing e-learning experience with my students.Science is in fact, a real fun.It is a subject never--never confined within the four walls of the clssroom.Science is a continuous process of learning! I wish to create a pleasing learning environment for my students.So, Come and ENJOY Science with me.

Monday 10 December 2007

FAST FACTS about EARTH:

circumferance: 24,901.5 miles
diameter: Nearly 8,000 miles
surface area: 196,935,000 sq miles
percent of earth's ocean approximatly 70% *
percent of earth's land: approximatly 30%
highest point:Mt Everest 29, 028 above sea level
lowest point: Dead Sea 1,302 below sea level
* of the 70 percent of water; 97 percent is salt water, 3 percent is fresh water


The EARTH is made of the following CHEMICAL ELEMENTS:



oxygen 46.6 %
aluminum 8.1
iron 5
sodium 2.8
magnesium 2.1
calcium 3.6
potassium 2.6
silicon 27.7
other 1.5

Here is an example of how long it takes garbage to break down:


plastics take 500 years
aluminum cans take 500 years
organic materials take 6 months
cotton, rags, and paper take 6 months.

Other Interesting FACTS:

Earth is referred to as the BLUE PLANET. WHY? Because from space,
the oceans combined with our atmosphere make our planet look blue.


Earth is estimated to be 3-5 Billion Years old.

Earth is estimated to weigh 6,585,600,000,000,000,000,000 tons.
The area of the earth is almost 200 million square miles.

Earth travels through space at 66,700 miles per hour.

Earth's oceans are an average of 2 Miles deep.

Earth's rotation on its axis makes a day at 24 hours...

Earth's orbit around the sun makes a year at nearly 365 and 1/2 days
Earth is tipped at 23 and 1/2 degrees in orbit. That axis is what causes our seasons.

Antarctica is the coldest place on earth. The continent is almost entirely covered in ICE !

Only 11 percent of the earth's surface is used to grow food.
Breeze carries about 100 Million tons of sand particles around the earth yearly.
That means if you live in America-you could have Sand that came from the Gobi desert in China.

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