Astronomy and Earth formation
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Created by:
luvwinter080 on October 25, 2010
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14 terms
Terms | Definitions |
|---|---|
 What is the Big Bang Theory? What is the Evidence? When did it take place? | The Big Bang theory is the theory of how the universe originated, Evidence: , 13.7Billion years ago |
| Explain the nebula hypothesis of solar system formation. What force led to the collapse of this nebula | A concentration of hydrogen gas and dust swirling around our young sun. The force of gravity led to the collapse. |
| What needed to take place before our sun could start nuclear fusion? Explain the life cycle of our sun and what it will turn into at its very end? | ... |
| What is this energy process called? | ... |
| Descibe the nucleosynthesis reaction that take place in the core of starts to form elements heavier than hydrogen. What needs to take place in starts before we get elements heavier than iron produced in the universe | ... |
| How long ago did the earth form? | 4.5 Billion years ago |
| What is a benefit of the earth having a magnetic field? | keeps some of the high energy particles from the sun from heating the planet, allows water to exist as gas and as a liquid. |
| Explain how the moon formed | Earth was hit by a mars-like planets and parts of the earth fell off creating the moon |
| Describe why the earth became layered due to density differences of materials early after its formation. | Early after Earths formation, all the heavier elements sank to the middle of the earth, which is the inner core, and everything just started piling up, making layers and the crust was the most lightest which landed on top. |
| Dram a picture of the inside earth Label layers according to their densities. |  |
| Explain where the earths oceans came from? (2 examples) | Volcanoes and comets |
| Where did the earths atmosphere come from? What was it like in the early earth? What is its composition today? What is the importance of plants in maintaining the modern atmosphere? | Volcanoes spewed gases including water vapor in to the atmosphere. In the early earth |
| How do we calculate the density of and object | Mass/Volume=Density |
| How does mass affect the gravitational attraction of an object? | ... |
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