Astrology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Scientific Notation | System of recording very large or very small numbers by using powers of 10
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| the diameter of the moon compared to the earth? | one fourth the size
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| Astronomical Unit (AU) | average distance from earth to sun: it is: 1.5 x 10^8
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| solar system | consists of the Sun, its family of planets and some smaller bodies like comets, moons, asteroids
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| Planets | Non-luminous bodies that shine by reflecting sunlight. ex: mercury, earth, venus
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| Star | Self luminous ball of hot gas that generates its own energy. Ex, Sun
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| How much bigger is the Sun than the Earth | 110 times larger
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| Light-year | unit of distance equal to the distance light travels in one year
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| Stars form from... | thin clouds of gas that fill the spaces between the stars
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| Galaxy | great cloud of stars, gas, dust, star clusters, and nebulae bound together by the combined gravity of all the matter
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| Milky way | our galaxy. The hazy band of light that circles our sky, produced by the glow of our galaxy
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| Supercluster | a cluster of galaxy clusters
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