WGU C894 Unit 1 Intro to Astronomy, Exam Review Questions and answers, 100% Accurate.
What is planet Earth's diameter? - -nearly 13,000km What is our moon's diameter compared to Earth's? - -our moon is 1/4 size diameter of our Earth scientific notation - -system of recording very large or very small numbers using powers of 10 ex: 380,000=3.8 x 10⁵ planet - -non self-luminous body orbiting the Sun or another star that has strong enough gravity to compress it into a spheroidal shape and to have cleared its orbital zone of debris dwarf planet - -massive enough to be compressed into a spheroid but not massive enough to clear its orbit star - -self luminous ball of hot gas that generates its own energy
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wgu c894 unit 1 intro to astronomy exam review qu