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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The modern definition of a constellation is ( ) |
An area in the sky |
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When using the Bayer naming system, a ( ) letter indicates a stars brightness relative to the other stars in the constellation. |
Greek |
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A constellation contains a group of stars... |
All within a boundary in the same area in the sky |
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A(n) ( ) is the average distance from the earth to the sun |
Astronomical unit (AU) |
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Most of the constellations in use today originated from Greek mythology. |
True |
True or false |
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Most star names are... |
Arabic |
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( ) is the brightest star in the constellation of Ursa major |
Alpha Ursa majoris |
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Light travel units (LTU's) are used to measure ( ) |
Distance |
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How long would it take a beam of light to travel to the moon, hot the Apollo 11 surface reflector, and return to earth? |
2.6 seconds |
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The sun is ( ) from Earth |
8.3 light minutes |
How far |
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Most stars begin with the prefix "Al", "Al" means ( ) |
The |
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A stars ( ) is how bright the star appears from Earth |
Apparent magnitude |
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What was not a common use for the constellations? |
Determining distances to the stars |
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What is not used by astronomers to name the stars? |
Light travel names |
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The ( ) constellations of the zodiac are called the zodiacal constellations |
13 |
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The ancient Greeks purposes the universe was ruled by... |
The laws of nature |
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The milky way galaxy |
Is about 100,000 light years in diameter |
How big |
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The milky way galaxy |
Contains about 200 billion stars |
How many stars |
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Simply pot, the big bang was an event that released a tremendous amount of energy |
True |
True or false |
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Which sequence is correct when ordered by increasing size? |
Earth, solar system, solar neighborhood, milky way, local group, local supercluster, universe |
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What is sagittarius a? |
A super massive black hole located in the center of the milky way galaxy |
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When did the birth of the scientific method occur? |
During the renaissance |
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One of the most powerful tools used by modern astronomers to determine the properties of stars, galaxies, and nebulae is... |
Spectroscopy |
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stars the size of our sun have a porojected lifetime of approximately 10 billion years. How many years does our sun have left ? |
5 billion |
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Star system |
a star and the bodies that orbit it |
define |
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stars (the sun) |
hot ball of gas |
define |
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planets |
a body that orbits a star |
define |
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satellites |
a body that orbits a planet |
define |
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asteroids |
most are found in orbit between Mars and Jupiter |
define |
