Test your basic knowledge |

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. Massive clouds of dust and gases where stars are born






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






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






4. 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.






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






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






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






8. The name of our galaxy - a spiral galaxy that contains about 400 billion stars






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






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






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

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






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






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






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






16. 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






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






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






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






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






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






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






23. The study of the universe






24. 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






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






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






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






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






29. The brilliant explosion of a dying supergiant star






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






31. Any substance that cannot be broken down into simpler substances






32. The rainbow effect when light is dispersed through lens






33. A faint star of enormous density






34. The luminous cloud of particles surrounding the frozen nucleus of a comet






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






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






37. A faint star of enormous density






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






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






40. Stony or metallic object that is the remains of a meteoroid that has reached the earth's surface






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






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






43. A space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements






44. A rapidly spinning neutron star that produces radio waves






45. The study of the universe






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






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






48. Any natural satellite of a planet






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






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