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All the vocabulary that you need to know for this quarter

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Spiral Galaxy   A galaxy that has a center bulge with old stars and arms with new stars  
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Elliptical Galaxy   A galaxy shaped like an egg or ball  
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Irregular Galaxy   A galaxy with no defined shape  
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Milky Way   Our galaxy, a spiral galaxy  
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Galaxy   A large group of gas, dust, and billions of stars  
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Solar System   A group of planets that revolve around a star  
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Sun   The star at the center of our solar system  
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Core   The center of the sun where its energy is produced  
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Photosphere   The outer layer of the sun that we see  
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Sunspots   Dark, cool spots on the sun’s surface  
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Plages   Bright hot spots on the sun  
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Solar Flares   Bursts of fire that shoot out from the sun’s surface into space  
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Prominences   Loops of fire that go back to the sun’s surface  
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Corona   The halo like layer that we can only see during a solar eclipse  
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Diameter   A straight line that passes through the center of a circle or sphere  
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Mass   How much matter is in an object  
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Surface Gravity   The amount of gravitational pull experienced on the surface of an object  
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Length of Rotation   How long it takes an object to spin on its axis once, or one complete day  
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Length of Revolution   How long it takes an object to go around the sun, or one year  
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Rotation   The spin of an object on its axis  
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Orbit   The path that a body follows as it travels around another body in space  
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Revolution   The motion of a body that travels around another body in space  
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New Moon   None of the moon is visible.  
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First Quarter   Exactly half of the Earth  
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Full Moon   The entire side of the Moon facing the Earth is visible  
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Third Quarter   Exactly half of the Earth  
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Lunar Eclipse   The moon passes through the Earth’s shadow  
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Solar Eclipse   The moon moves between the sun and the Earth  
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Gravity   The force of attraction between objects, it keeps objects in orbit  
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Tides   The daily changes in the level of the oceans and other large bodies of water  
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High Tides   They occur on the side of the Earth facing the moon and on the opposite side. The water level is higher in these locations.  
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Low Tides   They occur between the locations of the high tides. The water is pulled away from these locations so the water level is low.  
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Earth’s Tilt   The cause of seasons on Earth  
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Winter   When the northern hemisphere is tilted away from the sun  
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Summer   When the northern hemisphere is tilted toward the sun  
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Created by: Marquart
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