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. Mercury






2. A galaxy sending out a stream of material from its nucleus






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






4. The wavelengths where a specific element can absorb or emit light.






5. A very dense - highly populated cluster of galaxies






6. Earth






7. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes






8. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






9. A particle of light






10. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






11. Neptune or uranus






12. A collection of galaxies like the one the Milky Way belongs to






13. 10^2 nm 10^7 nm






14. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






15. The oldest part of the Milky Way






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






17. Collections of young - hot stars






18. Europa






19. Centered on the Earth






20. 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






21. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






22. The gap etween saturn's A and B rings






23. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






24. A planet orbiting about a distant star






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






26. Venus






27. 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)






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






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






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

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31. The oldest terrain on the moon






32. Collections of young - hot stars






33. The rate of expansion of the universe.






34. An evolved star - past the helium flash that is burning helium to carbon in it's cores






35. 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)






36. Venus






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






38. The science of measuring light energy by wavelength.






39. Matter so dense that even light cannot escape its gravity






40. The rate of expansion of the universe.






41. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






42. Europa






43. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






44. The dimming of starlight by intervening dust






45. The crust of a meteorite caused by its entry into Earth's atmosphere






46. 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.






47. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






48. Jupiter






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






50. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.