Term
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Definition
| hypotheses that have withstood observational or experimental tests |
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Definition
| bits of interplanetary debris that sometimes fall onto our planet's surface; oldest objects found on Earth |
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Term
| More massive stars have more/less nuclear fuel and live longer/shorter? |
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Definition
more; shorter
(they burn fuel much more quickly) |
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Term
| Some dead stars can become pulsars. What are these? |
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Definition
| rapidly rotating neutron stars |
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Term
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Definition
| Distant extremely bright objects in sky |
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Term
| What is the angular size of the moon? The sun? |
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Definition
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Term
| When measuring distances across a solar system, what unit of length do astronomers use? |
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Definition
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Definition
| The distance from the Earth to the Sun |
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Definition
| Distance that light travels in 1 year |
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Definition
| the distance at which 1 au subtends an angle of 1 arcsec, 3.26 ly |
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Term
| Distance from Earth to Sun (in miles)? |
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Definition
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Term
| Distance from Earth to Moon (in miles)? |
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Definition
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Term
| How many degrees is Earth's tilt? |
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Definition
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Term
| When are shadows longest? Why? |
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Definition
| in wintertime, the sun is closer to the horizon so there is more sunlight spread out causing it to be colder than when the sun is farther away from the horizon causing the same amount of energy to be focused in a smaller space and thus hotter (with a smaller shadow) |
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| What is the distance away from every star in which scientists think life may occur? |
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Definition
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