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Planetary Comparison. Planetary Comparison Paper Properties of Earth Earth is the
fifth largest planet in our solar system and the third planet from the Sun. ...
... A Comparison of the Planets in the Sol System Shaun J. Sci350 December 19 ... have created
cliffs that are thought to be the product of planetary shrinkage, which ...
... Planet Comparison Report Uranus: Uranus was discovered in 1781 by Sir William ... News
Articles: From: Science Title: Planetary Science: Neptune May Crush Methane ...
... system. Earth has abundant volcanic activity because of its size in comparison
to the other terrestrial planets. ... 2004). Planetary Geology. ...
... compatible with elliptical, not circular, orbits, and still later planetary motion
was ... The comparison between experiment and theory is made within the context ...
Submitted by krisybell on April 9, 2007
Category: Science
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Planetary Comparison Paper
Properties of Earth
Earth is the fifth largest planet in our solar system and the third planet from the Sun. Earth's diameter is 12,756.3 km. Earth's average distance from the Sun is 149,600,000 km, and Earth has one moon. Earth is comprised of rock and metals.
Fortunately, for the inhabitants of Earth, Earth has an ozone layer which keeps dangerous solar radiation out and healthy oxygen in. The oxygen contained on the Earth enables the inhabitants to live and breathe. Oxygen makes up 20% of the gases in the Earth's atmosphere. The other gases include nitrogen, argon, and others.
Earth also consists of oceans, land, and snow capped mountains. In fact, water covers 71% of the Earth's surface. Because of the large amount of water versus the amount of dry land it is a wonder Earth is not called "Water" instead of Earth. Earth is the only planet where water is present on the surface in liquid form. Liquid water is responsible for most of the erosion and weathering of the Earth's continents which is a process that is unique in the solar system. (Arnett, 2006)
Earth is made up of layers; these layers are called the crust, mantle, and core. The crust differs in thickness in specific areas of the Earth. For example the crust is thinner under the oceans and thicker under the continents. (Arnett, 2006) Most of Earth's mass is in the mantle. The mantle consists of a layer of hot molten rock. This hot material rises through the crust and onto the Earth's surface when volcanos erupt. Earth's thick core consists primarily of iron and nickel with the outer core being liquid and the inner core probably being solid (Padilla, 2004)
How We Learn About Qualities of Earth and other Planets
We learn about the qualities of planets by explorations, observations, and comparative studies. Explanations must be based on observations, evidence, and testing. All knowledge gained should be peer reviewed and...
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