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






2. The law stating that hotter blackbodies look bluer than cooler blackbodies.

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






4. A rock or iron specimen that has fallen from space






5. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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6. Mercury






7. The distance a moon can be from a planet before shattering from tidal forces






8. Venus (retrograde)






9. A streak of light in the atmosphere






10. A word meaning 'the same in all directions.'






11. The dimming of starlight by intervening dust






12. Then the Sun moves from north to south across the celestial equator (about September 23)






13. Any class of objects with a uniform luminosity used to determine distance.






14. Radiation given off by electrons accelerating in a magnetic field






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






16. The lens that gathers the light in a refractor






17. A star that is in the process of forming. It glows from gravitational contraction






18. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






19. Infinitely long -> 10 cm






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






21. The lowest energy of an atom.






22. A measure of the ability of a telescope to see fine detail






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






24. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






25. A high-pressure bulge in Neptune's southern hemisphere






26. Where is the center of the expansion






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






28. A word meaning 'the same in all directions.'






29. The oldest terrain on the moon






30. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






31. The entity from which the whole universe is postulated to have come from.






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






33. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






34. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






35. Titan






36. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






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






38. Mercury and venus






39. The powdered stone fragments that make up the lunar 'soil'






40. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






41. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






42. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






43. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






45. Ganymede and Titan






46. A location on an H-are Diagram where evolving stars pulsate






47. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






48. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






49. Light-colored high-pressure bands in Jupiter's atmosphere






50. Mercury and venus