Science Unit 25 - Astronomy Copy Crossword
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1) a celestial body consisting mainly of ice, dust, and gas in a (usually very eccentric) orbit around the Sun and having a "tail" of matter blown back from it by the solar winds as it approaches the sun2) the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly3) the part of the solar system where almost all of the dwarf planets are located, beyond Neptune5) a giant sphere of super hot gases made up of mostly hydrogen and helium that gets extremely hot by burning hydrogen into helium in a process called nuclear fusion7) an interstellar cloud of dust, hydrogen, helium, and other ionized gases9) the scientific study of outer space and all the objects and bodies outside of the Earth's atmosphere10) an area in the sky in which a group of stars forms an imaginary outline or pattern, typically representing an animal, mythological person or creature, or an inanimate object11) a region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found orbiting the Sun12) the spin of a body about its axis13) the curved path of a celestial object or spacecraft around a star, planet, dwarf planet, or moon, especially a periodic elliptical revolution16) are small, rocky bodies that orbit, or travel around, the sun. They are also called minor planets or planetoids. In general, they are materials left over from when the planets formed. They are also created when other bodies in space collide and break apart.18) a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction19) describes our view of the moon where the moon is invisible during its monthly cycle of phases |
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4) an imaginary reference line drawn through an object. In astronomy, this term usually refers to the line about which an object rotates6) describes our view of the moon where the surface of the moon becomes smaller in our view of it during its monthly cycle of phases8) a celestial body that orbits the sun, has sufficient mass to assume a nearly spherical shape, clears out objects from the neighborhood of its orbit, and is not a satellite of another such celestial body14) a scientist who studies objects and matter outside of the Earth's atmosphere including planets, stars, and galaxies15) a dwarf planet is a body orbiting the Sun that is big enough to round itself and be mostly spherical by its own gravity, but has not cleared its orbital path of other rival bodies.17) describes our view of the moon where the surface of the moon becomes larger in our view of it during its monthly cycle of phases19) a moon revolving around a planet or dwarf planet20) a pulling force that works across space |
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