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Transcript
A solar system refers to a ____ star and all objects that travel in orbit around it. the _______ Our solar system consists of: The Sun (our star) Eight planets Dwarf planets Asteroids and comets The Oort Cloud Our solar system is located in an outward spiral of the __________ Milky Way galaxy. Sun The center of our solar system is the ___. The sun.. .. is the largest _______ object in our solar system. heliocentric which This theory is called _________ is a sun centered universe .. is a star, a hot ball of glowing gases ______. Our solar system contains 8 _______ planets . A planet is…. star An object that orbits a ____. An object that shines by ________ reflected light. The Terrestrial Planets closest to the Sun are The four planets _______ called the terrestrial planets because they have _____ solid rocky surfaces. Mercury Venus Earth Mars Asteroids Mars and Jupiter Between the orbits of _______________ there is an asteroid belt. Asteroids are small, rocky metallic bodies that orbit the Sun. ______, minor planets. They are actually ______ Comets a celestial object consisting of a _________ nucleus of _______and ________, dust when near the sun, a ice “tail” of gas and dust particles pointing away from the sun. _______ The Gas Giants The four large planets beyond the asteroid ___________ belt are Jupiter called gas giants. These planets are _______, Neptune These planets ________, Saturn _________, Uranus and ________. are gaseous in nature, composed of mostly hydrogen and helium ____________________. The gas giants are ______ larger and much less ______. dense ______ Pluto was originally considered the ninth planet but has been recently classified as a ______ dwarf planet. Beyond the orbit of Pluto is the __________. Oort cloud The Oort cloud is a spherical cloud that surrounds the Solar System and lays roughly a light-year ________ from the Sun. It contains an estimated 10 trillion comets with the combined mass of the Earth. _______
