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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. Radiation left over from the beginning of the universe






2. Space object made of dust and rock particles mixed with frozen water - methane - and ammonia that forms a bright coma as it approaches the Sun






3. A rapidly spinning neutron star that produces radio waves






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






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






6. 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






7. Any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)






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






9. A galaxy with a bulge in the middle and arms that spiral outward in a pinwheel pattern






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






11. Varying amounts of the lighted moon as seen from earth






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






13. The farther away a galaxy is - the faster it is moving away

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






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






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






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






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






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






20. A faint star of enormous density






21. The spinning of Earth on its axis






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






23. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth






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






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






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






27. Space object made of dust and rock particles mixed with frozen water - methane - and ammonia that forms a bright coma as it approaches the Sun






28. A model of the universe based on the assumption that the sun - moon - and planets all orbit Earth






29. Italian astronomer - mathematician - and physicist. His telescopes proved the sun is the center of the solar system and that the planets/moon move. He was persecuted for supporting Copernicus' ideas.






30. 23.5° - the reason we have seasons

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






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






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






34. A shift toward the red end of the spectrum in the observed spectral lines of stars or galaxies showing objects are moving away and that the universe is expanding






35. The study of the universe






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






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






38. The spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths






39. 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






40. The rainbow effect when light is dispersed through lens






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






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






43. A faint star of enormous density






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






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






46. 23.5° - the reason we have seasons

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

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






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






50. Chunk of rock or dust in space







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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