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4th grade chapter 6
Earth and Space
Term | Definition |
---|---|
ellipse | a shape that is like a circle stretched out in opposite directions |
rotation | spinning of a planet, moon, or star around its axis |
constellation | star pattern |
revolution | movement of one object around another |
eclipse | event in which one object in spaces gets between the sun and another object |
orbit | the path an object follows as it revolves around another object |
planet | a very large, round object, that moves around a star |
lunar eclipse | an event in which the moon passes through Earth's shadow |
asteroid | a rocky object that orbits the sun, but is too small to be called a planet or a dwarf planet |
solar eclipse | an event in which the moon passes between the sun and Earth |
comet | a frozen object that orbits the sun |
solar system | the sun, the eight planets and their moons, and other objects |