Date post: | 12-Feb-2017 |
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O2
EARTH
WHAT IS EARTH?
What is Earth?
What is the earth made of?
Earth Revolution
Structure of the Earth
Earth Rotation
What is Earth?
Earth is the third planet from the sun
SPACEThere Are Not 24 Hours In a Day
23 hours, 56 minutes, and 4 second – the time it takes earth to rotate on its axis,
called sideral day
Earth Is Smoother than Bowling ballHigh mountains and deep ocean trenches
make up only 1/5000th of the earth circumference
1 Object a DayNASA estimates on average, that one piece of
space junk returns to earth each day
ATMOSPHERE
100 TONSOf small meteorites mainly
fragments of dust , enter the earth’s atmosphere every day.
8.6 MILLIONLightning strikes a
day
The Ozon Hole Is ShrinkingIn 2012, the hole in the layer was smaller than it has ever been in
the last 10 year
SEAWATER ON EARTH IS
97% Salted3% Fresh
90%Of all volcanic activity occurs in the ocean
10.9 KMThe depth of the deepest area of the
ocean : The Mariana Trench
UNDER EARTHEarth Is The Only Planet in our Solar
System with plate techtonicWithout them, carbon wouldn’t be
consumed and recycled. And the earth would overheat (just like Venus)
99% of Earth’s Gold lies in its CoreEnough to form 1.5-foot coat around the
surface of the earth.
2.8 KM/1.7 MILESThe depth at witch bacteria have
been found. They survive by using radioactivity from uranium to
convert water to usable energy
What is the earth made of?
Structure of the earth
Earth Rotation
Earth Revolution