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 philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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2. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






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






4. A long-lived high-pressure bulge in Jupiter's southern hemisphere






5. The distance light travels in one year (=9.46x10^12km).






6. 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.






7. 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)






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

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






10. A star fusing hydrogen to helium in it's core






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






12. The oldest grouping of stars - found in the galaxy halo






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






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






15. Long - meandering cliff formed when a planet surface cools and shrinks






16. The place in the sky that the Earth's axis points toward (can be either north or south)






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






18. 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.






19. The point in its orbit where a planet is farthest from the sun






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






21. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






22. Matter that reveals itself only through its gravitational attraction.






23. The oldest terrain on the moon






24. When massive objects bend space and time enough to create multiple images of an object located behind them






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






26. The telescope configuration that has the focus placed at the back of the primary mirror






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






28. A prominence seen against the disk of the sun






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






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






31. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






32. Europa






33. 10 nm 10^2 nm






34. 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.






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






36. A telescope that uses mirrors to focus light






37. A small chunk of rock in space






38. 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)






39. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






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






42. Hot cells of gas that rise and fall in the hotosphere






43. Why does the earth have few craters while the moon has many?






44. Venus






45. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






46. The source of the force that is accelerating the expansion rate of the universe.






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






48. A spread of light with an uninterrupted wavelength distribution of energy.






49. Ganymede and Titan






50. Large nebula consisting of very cold gas and dust