Global Science: Final Exam

Global Science Final Exam

Question 5

Our solar system is very unique. Our solar system is located in the Milky Way galaxy. It is on the outskirt area of the galaxy. Our galaxy is in a spiral shape. We are located on the Orion arm of the galaxy. Our solar system contains eight planets and many stars. Our solar system moves orbital in a ecliptically form. In our solar system the planets orbit the sun. There are eight planets and because they are all different distances away from the sun they all have a complete orbit at different times. In our perspective our solar system itself is ginormous let alone when you consider the entire universe. For this comparison I’ll use the earth because from what we know all of us that are human with intelligence it’s easy to make comparisons with the earth because it’s what we all live on. Earth is the fifth largest planet behind Jupiter, Saturn, Uranus, and Neptune. In our solar system the Sun is the biggest object by itself and without it we wouldn’t have life. Our solar system is set up with the sun in the middle with our planet orbiting the sun. The planets in order are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. We used to have nine planets in our solar system but the now defined “dwarf planet” Pluto is no longer meets the planet standards. Way back when it was told that the earth was the center of our solar system but that was found to not be true because if we were the center of our solar system the planets would revolve around us and other planets wouldn’t get the sun light they receive now. Our planet is told to be 4.6 billion years old. We know that from things like carbon dating.

The Big Bang theory accounts for the formation of the universe. The big bang theory basically says that a nebula exploded and from the heat formed the sun and all the fragments caused by the nebula became planets and asteroids. Without this theory of the Big Bang Theory we wouldn’t have life.

A cosmic wave background has helped us determine the age of the universe. The cosmic wave background is based off the big bang theory. Scientists measure the time the universe expands and the explosion rate of the big bang. “Astronomers estimated that the big bang occurred between 12 and 14 billion years ago, yet our solar system is believed to only be 4.5 billion years old.” (NASA Griswold)

Bibliography

wmap.gsfc.nasa.gov/universe/uni_age.htm

NASA, Universe 101. 12-21-2012. Britt Griswold

Universetoday.com

Planets and our solar system, History. 07/14/13. Elizabeth Howell

All my science teachers from my entire life.