Presentation on theme: "Earth By: Shea Otsuka and Kain Masutani. General Facts About 4.6 billion years old, as old as our solar system Average diameter of 12,742 kilometers."— Presentation transcript:
Earth By: Shea Otsuka and Kain Masutani
General Facts About 4.6 billion years old, as old as our solar system Average diameter of 12,742 kilometers. (7,926 miles) Temperature of the Earth's core is about degrees Celsius. The Earth's axis has a tilt of about 23 ½ degrees Third planet from the Sun, fifth biggest in solar system
Formation After the big Bang, the heat generated by the repeated high speed collisions of much smaller bodies of space rocks which continually clumped together and collided formed Earth The Earth is made mostly of iron, oxygen, silicon, magnesium, nickel and sulfur: 34.6% Iron, 29.5% Oxygen, 15.2% Silicon, 12.7% Magnesium, 2.4% Nickel, 1.9% Sulfur, 0.05% Titanium
Water on Earth As Earth cooled, water vapor began to escape and condense in the Earth's early atmosphere. Clouds formed and storms raged, raining more and more water down on the primitive earth, cooling the surface further until it was flooded with water, forming the seas.
Life It is estimated that the first life forms on earth were primitive, one-celled creatures that appeared about 3 billion years ago. Pretty much all there was for about the next two billion years.
Atmosphere Exosphere: outermost layer of earth. Mainly composed of hydrogen and helium. The particles in this area migrate into the solar winds
Atmosphere Thermosphere: low density molecules, the temperature is constant with the height. The bottom portion of this layer is called the exobase
Atmosphere Mesosphere: extends from km. The meteors burn up in this part of the atmosphere. The temperature is the coldest temperature on earth (-121 degrees F) water freezes and there are ice clouds
Atmosphere Stratosphere: extends from 51 km. The temperature increases due to the ultraviolet rays. The ozone layer restricts turbulence and mixing.
Atmosphere Troposphere: extends from 9km There is varied weather and the temperature depends on the energy from earths surface. The lowest part of this part is the warmest.
Chemical Composition Iron 34.6% Oxygen 29.5% Silicon 15.2% Magnesium 12.7% Nickel 2.4% Sulfur 1.9%
Works cited Cain, Fraser. "Earth." Universe Today. 6 July Web. 08 Feb Francis, George. "Earth L Earth Facts, Pictures and Information." The Nine Planets Solar System Tour Web. 08 Feb Przyborski, Paul. "Earth Observatory." NASA Earth Observatory : Home. 8 Feb Web. 08 Feb Turner, Andrew. "Connect with the Planet." Earth | Earth Day | Earth Maps | Earth Pictures - Earth.com. 3 Jan Web. 08 Feb EARTH Magazine - Travels in Geology: Precipitous Peaks and Dunes in Colorado. Web. 08 Feb