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






2. A region of the solar system that is just beyond the orbit of neptune and that contains small bodies made mostly of ice






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






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






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






6. A rapidly spinning neutron star that produces radio waves






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






8. The brightness of a star when viewed from Earth






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






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






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






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






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






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






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






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






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






18. 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






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






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






21. Chunk of rock or dust in space






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






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






24. A faint star of enormous density






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






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






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






28. 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






29. The rainbow effect when light is dispersed through lens






30. The brightness of a star when viewed from Earth






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






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






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






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






35. The study of the universe






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






37. Chunk of rock or dust in space






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






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






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






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






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






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






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






45. Explained movement of planets with retrograde motion






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






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






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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