Test your basic knowledge |

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 backward motion of a planet against the background of stars.






2. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






3. The imaginary sphere centered on the Earth that hols the stars.






4. The lens in a telescope used to determine the magnification






5. When the Sun is farthest north of the celestial equator (about June 22)






6. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






7. The lowest energy of an atom.






8. The apparent path of the Sun through the stars on the celestial sphere.






9. Possible Fates of the Universe






10. When a planet lines up with the sun inthe sky






11. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






12. Hot cells of gas that rise and fall in the hotosphere






13. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






14. A star fusing hydrogen to helium in it's core






15. The seasonal shifting of a nearby star's position relative to more distant objects.






16. Poitns of gravitational stability in the orbit of a planet






17. Mercury - Venus - Earth - Mars






18. Very center of galaxy. suggestion of a black hole






19. A planet that is closer to the sun than the earth






20. A volume of space where few - if any - galaxies are located






21. Dark - reddish - low-pressure bands in Jupiter's atmosphere






22. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






23. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






24. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






25. How is the Hubble Law consistent with an expanding universe?






26. 10^2 nm 10^7 nm






27. Material that shoots rapidly out into space. Flares cause Auroras






28. The number of protons in an atom.






29. The gap inthe outer portion of Saturn's A ring






30. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






31. The normal eastward movement of a planet against the background of hte distant stars.






32. Form honeycomb like patterns surrounding empty or nearly empty voids.






33. Any change in the speed or direction of an object's motion






34. A small round distribution of gas surrounding a dying star






35. All possible types of energy that can be emitted and absorbed by atoms.






36. An empirical scheme for predictin ghe orbital distances of planets






37. In what chemical form are jupiters nitrogen - carbon and oxygen?






38. The distance between a lens and its focal plane






39. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






40. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






41. When particles are compressed to an unnatural state where their pressure is not related to their temperature






42. Is there water on the moon?






43. The rock that makes up the lunar highlands






44. The instant of time after the Big Bang when space and time obtained their characteristics. (t=10^-43 sec when gravity freezes out-instant when gravity started existing as a separate force)






45. A galaxy emitting large amounts of energy at long wavelengths.






46. A logarithmically scaled value for the measured brightness of a star.






47. The average distance between the Earth and the Sun (=1.5 x10^8km)






48. A star that is burning hydrogen to helium in a shell surrounding it's core






49. A telescope that uses lenses to focus light






50. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)