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Galaxies

QuestionAnswer
All of the following are parts of the composition of a galaxy EXCEPT _____. A) dust B) gases C) ice D) stars C
A galaxy is best described as a cluster of _____ of stars. A) hundreds B) thousands C) millions D) billions D
Which of the following lists is in order from smallest to largest? A) Galaxy  solar system  universe B) Universe  solar system  galaxy C) Solar system  galaxy  universe D) Solar system  universe  galaxy C
A large system of stars rotating in an organized shape, which from one view looks like a pinwheel and from another as a flattened disk, is best classified as _____. A) a spiral galaxy B) a pinwheel galaxy C) an elliptical galaxyD)an irregular galaxy A
In which galaxy is Earth’s solar system located? A) Great Spiral galaxy B) Andromeda galaxy C) Milky Way galaxy D) Alpha Centauri galaxy B
Where is Earth’s solar system in relation to the rest of the galaxy where it is located? A) In a spiral arm B) Near the center C) Below the center D) Just outside the galaxy A
Which statement accurately relates the Milky Way galaxy and Earth’s solar system? A)The Milky Way galaxy is the center of the solar system.B)The Milky Way galaxy is the only galaxy in the universe.C)The solar system is part of the Milky Way galaxy. C
What is a light year? A) The distance from Earth to the Sun B) The time it takes for sunlight to reach Earth C) The distance light can travel in one year D) The time it takes to travel to the nearest star beyond the Sun C
To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the _____. A) kilometer B) light-year C) meter D) newton B
Why do scientists use the speed of light to describe distances between stars?A)Light waves can be detected only from distance sources.B)Telescope can detect light years more easily than km.C)Distances between objts in the universe are too big to use km. C
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