Term
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Definition
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Term
| How many moons are in our solar system? |
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Definition
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Term
| How long does it take light to to reach the earth from the sun? |
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Definition
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Term
| What's the speed of light? |
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Definition
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Term
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Definition
| 239,000 miles from the earth |
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Term
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Definition
| 100,000 light years across |
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Term
| how many miles is 1 light year equal to |
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Definition
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Term
| how big is the known universe |
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Definition
| 12 billion light years across |
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Term
| what is Perihelion and aphelion |
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Definition
p: point where the earth is closest to sun Jan 3
a: point where earth is furthest from sun Jul 3 |
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Term
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Definition
| Elongated path earth takes around the sun |
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Term
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Definition
| outermost portion of earths atmosphere-it helps to disperse/aborb solar energy |
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Term
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Definition
| solar radiation that reaches the horizontal plane |
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Term
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Definition
| the average insolation recieved at the thermopause when Earth is at its average ditance from the sun (93 million miles) |
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Term
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Definition
point receiving insolation perpendicular to the surface
(usually found between tropic of cancer and tropic of capricorn) |
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Term
| how long does it take the earth to travel around the sun |
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Definition
| 365 days 5 hours 49 minutes |
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Term
March 21 in the north
a. spring equinox
b. fall equinox
c. summer equinox
d. winter equinox |
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Definition
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