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Solar System Study Guide Test Friday, March 10, 2017 A huge ball of superheated gases is known as what in our solar system? Star A huge system of gases, dust and stars is known as what in space? Galaxy A group of objects that orbit a star in the center and includes that star is called what? Solar system An imaginary line that extends through both poles of a planet and can be found in Earth’s planet as well is known as what? Axis Another word that means orbit around an object. Revolve A large object that orbits a star is a what? Planet If you were to turn a model of Earth around on its axis, what does this motion explain? Why Earth has day and night What does a star’s color tell us about the star? How hot it is Which phase of the moon would occur approximately two weeks after a new moon? Full moon Which phase of the moon would occur right before a new moon? Waning crescent Which phase of the moon would occur right after a full moon? Waning gibbous Which phase of the moon would occur before a waning crescent? ¾ moon, last quarter moon, waning half moon Which phase of the moon would occur after the first quarter moon? Waxing gibbous Where is the moon located during its noon moon phase? Between the earth and the sun A group of stars known as Ursa Major is a type of what? Constellation You observe a bright object in the night sky for one week. Each night, the object is in a different position. This tells you that the object is a what? Planet True or False: Planets shine with a steady light, while stars twinkle. True Unlike stars, planets are easy to see because they glow with heat energy? False Planets do not move in the sky, but stars do. False Planets and starts orbit moons. False The Milky Way is a star. False A planet is an object that orbits a star. True A star is an object that orbits a planet. False The sun is a hot ball of oxygen and nitrogen. False The sun is a star made mostly of hydrogen and helium. True A universe is everything that exists in space. True A galaxy is a huge system of gases, dust and stars. True There is only one galaxy in space. False….there are millions of galaxy’s in space. How do astronomers classify the size of our sun? average size for stars Which planet is the brightest in our night sky? Jupiter Which planet looks red in our night sky? Mars When looking through a telescope, what planet has a bluish color in the night sky? Uranus or Neptune Our solar system can be found in which galaxy? The Milky Way Galaxy What large object floats in space above Earth to take pictures of stars and planets? Hubble Space Telescope What causes the sun to appear to rise and set in the sky? The rotation of the Earth on its axis Why do some of the positions of stars seem to change as seasons change? As the Earth orbits the sun we see different parts of space at different times of the year. What is the smallest planet in our solar system? Mercury Which planet is considered the largest? Jupiter What causes the moon’s phases? The moon’s orbiting the Earth What explains why we have 365 days in one year? Time it takes the Earth to make one complete orbit around the sun Which planets are considered the inner planets? Mercury, Venus, Earth and Mars Which planets are considered the outer planets? Jupiter, Saturn, Uranus and Neptune What can be found between the inner and outer planets? Asteroid belt What color has our sun been classified as and what does it mean? Yellow…average temperature for a star If our sun was a blue star how would it be different? It would be hotter If our sun was a red star, how would it be different? It would be cooler What is the definition of a satellite? Any object that orbits another object There are many objects in space. Name all eight of the planets. My Very Excellent Mother Just Served Us Nachos Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune