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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 study of the spectra of stars by analyzing the spectral properties of the light they give off






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






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






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






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






6. The brilliant explosion of a dying supergiant star






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






8. A rapidly spinning neutron star that produces radio waves






9. The rainbow effect when light is dispersed through lens






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






11. 23.5° - the reason we have seasons

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






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






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






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






16. Point in orbit that is closest to the sun - planet moves faster






17. The place in the orbit of a planet where the planet is farthest from the sun






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






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

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






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






22. An enormously bright - distant galaxy with a giant black hole at its center






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






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






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






26. A faint star of enormous density






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






28. The study of the universe






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






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






31. Chunk of rock or dust in space






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






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






34. Chunk of rock or dust in space






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






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






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






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






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






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






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






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






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






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






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






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






47. A graph relating the temperature and brightness of stars






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






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






50. Polish astronomer who produced a workable model of the solar system with the sun in the center (1473-1543)







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Can you answer 50 questions in 15 minutes?


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