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






2. The 'edge' of the universe. Light beyond this has not reached us yet.






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






4. A younger cluster of stars - found in the galaxy disk






5. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






6. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






7. What causes the zones and belts on jupiter and saturn?






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

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9. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






10. Mercury






11. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






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






13. A spectrum of light with energy at only a few wavelengths.






14. A prominence seen against the disk of the sun






15. Jupiter






16. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






17. Mercury






18. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






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






20. Large nebula consisting of very cold gas and dust






21. When the Sun is farthest south of the celestial equator (About December 22)






22. What are the three possible geometries of the universe?






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






24. Either Io -Europa - Ganymede - or Callisto






25. A word meaning 'the same everywhere throughout.'






26. Where is the center of the expansion






27. The dark - relativley smooth areas on the moon; Latin for sea






28. The location of a supermassive black hole






29. A distance measure determined by the shifting of a star against the background sky every 6 months.






30. VENUS






31. A force exerted by reflecting sunlight






32. A plot of star absolute magnitude verses spectral type.






33. When material is heated and moves taking the heat energy with it






34. The light produced when particles from the sun collide with atmospheric molecules






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






36. When one side of a body always faces the planet it revolves around






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






38. The mirror that determines the focus configuration of a reflector






39. A phenomenon seen when the Earth passes through the orbit of a burned out comet






40. Venus






41. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






42. A bridge of material held in position above the solar surface. They can remain for hours even days






43. The rotation of a star or planet at different speeds at its equator and poles






44. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






45. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






46. Is space infinitely large?

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47. The act of removing an electron from an atom.






48. 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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49. Jupiter - Saturn - Uranus - Neptune






50. What Ole Roemer used to measure the speed of light in a vacuum