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The Universe Quiz 9 (25 MCQs)

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1. How many classifications of galaxies are there
2. Who won the science competition? p 290
3. A date that is commonly accepted by Big Bang theorists for the Big Bang is _____ years ago.
4. About 90% of the stars in our galaxy are _____ stars.
5. What galaxy do you live in?
6. What is the biggest difference between the Geocentric Model and the Heliocentric Model?
7. Galaxies are classified into all of the following types by their shapes EXCEPT
8. Roughly how many times does Earth rotate during each complete revolution?
9. What are the three shapes galaxies take?
10. An astronomical object consisting of a luminous sphere of plasma ("burning gas" ) held together by its own gravity.
11. A cloud of gas and dust that looks like dark luminous matter.
12. A system of stars, gas, dust, and dark matter bound together by gravity is called
13. The center point of balance between the orbits of two revolving objects is called the
14. What is at the center in a geocentric universe?
15. What is a large collection of stars, gas, and dust that is held together by gravity
16. The change in wavelength of light or sound that is due to the relative motion of the source towards or away from an observer.
17. What are the names of the first four planets from the Sun?
18. The Big Bang Theory explains the formation of the
19. Which elements are mostabundant in the visibleuniverse?
20. The speed of light is _____
21. What occurs when the Moon passes through a part of the Earth's shadow?
22. Astronomers use the light-year to describe the relationship between objects in space. For example, the Andromeda galaxy is 2.5 million ly from Earth. Which of the following units is most similar to the light-year?
23. What was the period following the creation? and had rapid growth?
24. Galaxies furthest away are _____
25. The elements in a column of the periodic table _____
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