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astronomy midterm re
| Question | Answer |
|---|---|
| what is the best model of earth | oblate spheroid |
| what happened to create the universe what is some evidence of this | the big bang. Evidence is the universe expanding and microwave radiation |
| how hold is the universe | 14 billion years old |
| how old it the earth, sun, and sloar system | 4.6 billion years old |
| what is the most importanat influence on earth's tides | the moon |
| true or false high tides bulges are generally under and the opposite the moon | true |
| spring tides are | higer at high and lower at low tide |
| when do spring tides occur | full and new moon |
| when do solar eclipses occur | at new moon phase |
| when do lunar eclipses occur | at full moon |
| jovian planets are | like jupiter and are large and made mostly of low density gas |
| terrestrial planets are | like earth and are smaller and have high density rocky and metallic spheres |
| what is the source of the sun's energy | nuclear fusion of hydrogen atoms into helium atmos |
| where is our solar system located | one of the outer arms of the milky way galaxy |
| why do most celestial objects appear to rise in the east and set in the west | beacuase earth rotates on its axis from west to east |
| how fast does earth rotate | at 15 degrees per hour |
Created by:
mwheele2
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