Term
Yes or No
The defined lengths of time for the terms day, month and year vary depending on the perspective from which they are viewed. |
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Definition
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Term
Yes or No
The back side and the dark side of the moon are the same. |
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Definition
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Term
Yes or No
The point in the moon's orbit closest to Earth is its apogee. |
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Definition
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Term
Yes or No
The sun is located in the center of the Milky Way galaxy. |
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Definition
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Term
Yes or No
The lunar seas contain the largest masses of frozen water anywhere in the solar system outside of Earth. |
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Definition
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Term
Yes or No
A solar flare is a glowing sheet of light above the earth's North or South Pole. |
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Definition
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Term
Yes or No
Sunspots usually last no longer than several hours. |
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Definition
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Term
| The ______ moon visible in the Northern Hemisphere is the full moon that occurs around September 21-23. |
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Definition
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Term
| The ________ is the line that divides the illuminated and shadowed sides of the moon. |
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Definition
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Term
| The cusps of a crescent moon point ________ from the sun. |
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Definition
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Term
| The moon rotates ______ time(s) for each orbit around the earth. |
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Definition
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Term
| Stars follow circular paths around points above the earth's North or South Poles because of the earth's ______ about its ______. |
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Definition
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Term
| Lunar geologists believe that the only way the moon's surface changes today is by _____________. |
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Definition
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Term
| The spectacular, rayed crater found in the moon's southern hemisphere is named ________. |
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Definition
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Term
| Even though the moon's radius is about 27% of the earth's, its volume is only about ______ of the earth's. |
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Definition
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Term
| The __________ is an instrument that astronomers use to produce an artificial solar eclipse when observing the sun's atmosphere. |
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Definition
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Term
| __________ are streams of plasma material that rise up into and descend from the sun's corona, often forming loops. |
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Definition
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Term
| In the sun's _______ zone, hot plasma rises to the surface, cools, and descends into the sun's interior again. |
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Definition
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Term
| Rather than people serving the sun as a deity, the sun was designed to ________ us. |
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Definition
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Term
| The vernal equinox occurs near... |
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Definition
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Term
| During the first half of the lunar month the moon is said to be... |
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Definition
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Term
| How many times does the moon rotate during one revolution around the earth? |
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Definition
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Term
| The apparent path that the sun follows through the stars as seen from Earth's perspective is called... |
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Definition
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Term
| Most lunar craters appear to have formed... |
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Definition
| as a result of meteorite impacts |
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Term
| The moon has only a very thin atmosphere because it... |
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Definition
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Term
| The moon's surface gravity is what fraction of the earth's surface gravity? |
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Definition
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Term
| Compared to the earth, the average density of the moon is... |
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Definition
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Term
| The moon has a nearly perfect spherical shape because... |
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Definition
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Term
| Severe solar storms that can disrupt telecommunications on Earth are called... |
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Definition
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Term
| Astronomers believe that sunspots form when... |
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Definition
| a local magnetic storm erupts on the sun's surface, where on spot is the north pole and another spot is the south pole of the disturbance |
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Term
| Of what high-speed particles is the solar wind mostly composed? |
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Definition
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Term
| Compared to the temperature of the photosphere, the temperature of the corona is... |
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Definition
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Term
| In what part of the sun are thermonuclear reactions believed to occur? |
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Definition
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Term
| The sun's surface exists in what state of matter? |
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Definition
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Term
| The sun is composed mostly of... |
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Definition
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Term
| An astronomical unit is defined as the distance between the... |
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Definition
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Term
| Describe two types of motion for the sun, the moon, and the earth. Specify how they differ for each heavenly body. |
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Definition
| The sun rotates on its axis as it revolves through the Milky Way galaxy. The moon rotates much more slowly on its axis as it revolves around the earth. The earth rotates on its axis as it revolves around the sun. |
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Term
| How do lunar geologists believe the large maria on the moon formed? |
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Definition
| Lunar geologists believe that the large, roughly circular maria basins were likely immense meteorite impact craters that flooded with mantle magma. This idea is supported by the smooth, dark, basalt rock that makes up maria surfaces and the fact that they are often surrounded by mountainous rims similar to smaller craters. |
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Term
| the dark area on the surface of the sun |
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Definition
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Term
| the visible surface of the sun |
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Definition
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Term
| the region within the sun in which energy travels primarily as electromagnetic waves |
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Definition
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Term
| the outer region of the sun's atmosphere |
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Definition
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Term
| the lower layer of the sun's atmosphere |
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Definition
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Term
| depressions on the surface of the moon usually surrounded by circular walls |
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Definition
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Term
| associated with some craters on the moon which were formed by meteor impacts |
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Definition
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Term
| the point in the moon's orbit where it is closest to the earth |
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Definition
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Term
| the points on the crescent moon |
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Definition
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Term
| large, dark areas on the surface of the moon |
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Definition
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Term
| In a given circle, be able to shade the part of the moon that would be in shadow as you would observe it to illustrate waxing crescent. |
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Definition
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Term
| In a given circle, be able to shade the part of the moon that would be in shadow as you would observe it to illustrate waning gibbous. |
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Definition
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Term
| In a given circle, be able to shade the part of the moon that would be in shadow as you would observe it to illustrate first quarter. |
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Definition
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