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






2. A contracting cloud of gas and dust with enough mass to form a star






3. The spinning of Earth on its axis






4. A star that ejects some of its material in the form of a cloud and become more luminous in the process






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






6. Point of moon's orbit when it is nearest the earth






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

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8. A star that ejects some of its material in the form of a cloud and become more luminous in the process






9. Brahe's assistant - German astronomer who first discovered the three laws of planetary motion (1571-1630)






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






11. The brilliant explosion of a dying supergiant star






12. A contracting cloud of gas and dust with enough mass to form a star






13. The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases






14. Planet with a solid - rocky crust; more dense; Inner planet. Mercury - Venus - Earth - Mars






15. The brilliant explosion of a dying supergiant star






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






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






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






19. A model of the solar system in which Earth and the other planets revolve around the sun






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






21. The average distance between the Earth and the sun - or approximately 150000000 km






22. The theory that the universe originated 20 billion years ago from the cataclysmic explosion of a small mass of matter at extremely high density and temperature






23. A faint star of enormous density






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






25. Astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extra-terrestrial sources






26. Explained movement of planets with retrograde motion






27. The theory that states that gravity will over come the expansion of the universe and bring everything together in an implosion






28. Change in the apparent frequency of a wave as observer and source move toward or away from each other






29. Influenced by Copernicus; Built observatory and collected data on the locations of stars and planets for over 20 years






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






31. Chunk of rock or dust in space






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






33. The apparent westward motion of the planets with respect to the stars






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






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






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






37. Point of moon's orbit when it is nearest the earth






38. The distance between crests of waves - such as those of the electromagnetic spectrum






39. A spectrum of light in which there are no gaps - so that each region blends directly into the next






40. Spectrum of electromagnetic radiation emitted by a self-luminous source






41. 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






42. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon






43. A group of about 30 galaxies that includes the Milky Way






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






45. A telescope that uses a curved mirror to collect and focus light






46. The distance between crests of waves - such as those of the electromagnetic spectrum






47. Light distance travels in one year (9.5 trillion km)






48. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon






49. The small - dense remains of a high-mass star after a supernova






50. Any natural satellite of a planet







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Can you answer 50 questions in 15 minutes?


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