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 gap etween saturn's A and B rings






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






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






4. The measure of a variable star's apparent magnitude as it brightens and dims with time






5. The temp at which a substance in the vacuum of space solidifies






6. 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.






7. A word used in astronomy to describe all elements besides hydrogen and helium






8. The law that syas light energy from a blackbody increases as (temperature^4)






9. A subatomic particle with a negative charge. It creates light.






10. The force of attraction between any two objects having mass






11. The law that predicts the possible types of spectra.

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12. Neptune or uranus






13. The shadow area behind the Earth or Moon where the Sun is completely obscured.






14. Venus (retrograde)






15. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






16. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






17. 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 ________.






18. Is there water on the moon?






19. Is there water on the moon?






20. 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)






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






22. 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






23. The surface of the sun






24. Infinitely long -> 10 cm






25. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






26. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






27. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






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






29. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






30. A fusion process in which protons build together to form helium






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






32. The family of radiant energy that includes light as a subset






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






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






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






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






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






38. Why do Galaxies move very rapidly in the interiors of the dense clusters?






39. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






40. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






41. The lens that gathers the light in a refractor






42. The lowest energy of an atom.






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






44. A term referring to Jupiter-like planets






45. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






46. The part of the Milky way that has on-going star formation






47. Sc galaxies






48. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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49. 10^2 nm 10^7 nm






50. A particle of light