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The Universe Quiz 28 (25 MCQs)

Quiz Instructions:

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1. A Greek philosopher who believed in the primordial universe.
2. *There are an estimated _____ galaxies in the universe.
3. What characteristic of Earth makes it a habitable place for life? In other words, what does Earth have that no other planet has?
4. The "afterglow" of the energy from the origin of the universe that we see today.
5. As part of the Big Bang Theory of the formation of the universe, scientists believe that over time, the universe is continually changing in what characteristic?
6. What is the order of the colors in the spectrum?
7. What is our sun?
8. Most distant galaxies show a red shift. This is considered evidence that the universe is _____
9. Scientist that believe in the Big Bang Theory think that the universe was once much _____
10. What determines if a star becomes a giant or a supergiant?
11. Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?
12. A universe with enough matter (gravity) to eventually stop the expansion and recollapse will result in Big Crunch
13. What are terrestrial planets?
14. Which is the largest planet in the Solar System and has a prominent red spot?
15. Why does Earth get more energy from the Sun than from all other stars?
16. Which of the following is the birthplace of stars?
17. What percentage of the universe do scientists predict dark energy to occupy?
18. What is the time it takes light to travel from the sun to the Earth
19. Which of the following is NOT used to explore the universe?
20. Which statement is believed by most scientists about the age of our solar system?
21. What causes the Moon to revolve around Earth?
22. Which of the following has the smallest mass?
23. What is a large collection of stars held together by gravity?
24. What are electromagnetic waves?
25. Which of the following theories explains why the Universe is expanding at a great speed?
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