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Astronomy Basics

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The most distant point in the orbit of the moon






2. A particle of electromagnetic radiation having zero mass and carrying a quantum of energy






3. 23.5° - the reason we have seasons

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4. Galaxy with no particular shape - contains new & old stars






5. An extremely bright star of very large diameter and low density






6. The increase in wavelength of light due to an object moving away from the observer






7. The two days of the year on which neither hemisphere is tilted toward or away from the sun






8. A large body in space that orbits a star and does not produce light of its own






9. A star that falls into the main sequence category on the H-are diagram






10. The rainbow effect when light is dispersed through lens






11. A large cloud of dust and gas that can break apart into smaller pieces and form stars






12. Massive clouds of dust and gases where stars are born






13. A spherical region of comets that surrounds the solar system






14. Large group of stars - dust - and gas held together by gravity; can be elliptical - spiral - or irregular






15. English mathematician and physicist - discovered the law of universal gravitation






16. Remnant of a star that is so dense that nothing - not even light - can escape its gravity field






17. The brightness of a star when viewed from Earth






18. The decrease in wavelength of light due to an object moving away from the oberver






19. The spinning of Earth on its axis






20. Explained movement of planets with retrograde motion






21. The comet discovered in 1705 that repeats itself every 76 years and last appeared in 1986.

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22. The apparent change in position of an object when seen from different places






23. A group of stars that form a pattern in the sky






24. When the northern or southern most point on earth receives the most sun because the earth is tilted toward the sun






25. A measure of the amount of light that a star actually emits






26. A star that expands and cools once it runs out of hydrogen fuel






27. A system of two stars that revolve around each other under their mutual gravitation






28. A very small star with low temperature - reddish in color






29. An immense cloud of gas (mainly hydrogen) and dust in interstellar space






30. The elliptical motion of a body as it orbits another body in space






31. When the moon passes between earth and the sun - blocking the sunlight from reaching earth






32. Chunk of rock or dust in space






33. When the moon passes between earth and the sun - blocking the sunlight from reaching earth






34. The increase in wavelength of light due to an object moving away from the observer






35. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone






36. A faint star of enormous density






37. Any natural satellite of a planet






38. The brightness of a star when viewed from Earth






39. A system of galaxies containing from several to thousands of member galaxies






40. Every object in the universe was attracted to every other object w/ a force that is directly proportional to the masses and proportional to distance between them






41. One of the small asteroid-like bodies that formed the building blocks of the planets






42. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation






43. The motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone






44. The spinning of Earth on its axis






45. Any of the small solid extraterrestrial bodies that hits the earth's atmosphere






46. A galaxy shaped like a flattened ball - containing only old stars






47. Optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece






48. A large body in space that orbits a star and does not produce light of its own






49. A variable star that brightens and dims regularly - or pulses - and whose distance can be determined from its period of pulsation






50. Planets with low densities and are huge gas giants. Jupiter - Saturn - Uranus - Neptune







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Can you answer 50 questions in 15 minutes?


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