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. Ganymede






2. Jupiter






3. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






4. A small and dim but hot star.






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






6. 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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7. The location around an atom where an electron resides.






8. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






9. 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)






10. 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.






11. The name for the only seriously considered theory of the universe.






12. An object that may remain after a star explodes






13. The larger bodies that formed early in teh solar nebula that were chemically differentiated






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






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






16. A repeated - periodic push or pull capable of summing into a larger push or pull






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






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






19. Mercury






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






21. Half of the longest diameter across an ellipse






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. 100 nm 10 nm






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






25. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






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






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






28. The surface of the sun






29. The displacement of spectral lines to redder colors caused by the expansion of the universe.






30. A measure of the force of gravity on an object






31. 10^2 nm 10^7 nm






32. The most mass a white dwarf can have before collapsing to a neutron star






33. 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)






34. Venus (retrograde)






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






36. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






37. 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)






38. A star that blows itself apart






39. A particle of light.






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






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






42. The study of the universe as a whole.






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






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






46. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






47. Possible Fates of the Universe






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






49. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






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