Introduction To Earth Science Essay

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Vincent P. Salarda BSBA-1B Earth Science TTH: 2:30pm-4pm 07/21/15 07/23/15 Prof. Pinky de Garcia “ Intoduction to Earth Science “ Earth is the densest planet in our Solar System. It has a density of 5.51 grams per cubic centimeter. This is only the average density of the planet. The core is much denser than the oceans for example. Actually, scientists believe that the massive amounts of iron in our planet’s core is what makes it so dense. All of the planets are round because of gravity. When our Solar System was forming, gravity gathered billions of pieces of gas and dust into clumps which grew larger and larger to become the planets. The force of the collision of these pieces caused the newly forming planets to become hot…show more content…
For example, they have no solid surfaces and their outer layers are composed predominately of light…show more content…
When they are far from the sun, comets are extremely dark, cold, icy objects. The icy body is called the nucleus. Nuclei are made of various types of ices, dirt and dust. As comets get closer to the sun in their journeys through the solar system, they start to warm up. As they reach an area roughly the same distance from the sun as Jupiter, the ices start to heat up and vaporize, releasing the gases and embedded dust particles that form a cloud or atmosphere -- called a coma -- around the comet. As comets continue traveling closer to the sun, the dust particles and other bits of debris in the coma are blown away from the sun due to the pressure of sunlight. This process forms a dust

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