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. A rock or iron specimen that has fallen from space






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






3. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






4. A telescope that uses lenses to focus light






5. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






6. A particle of light






7. In what chemical form are jupiters nitrogen - carbon and oxygen?






8. The rotation period of the Earth measured relative to the Sun.






9. A representation of the changes in color and brightness of an evolving protostar.






10. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






11. A planet that is farther from the sun than the Earth is






12. Centered on the sun.






13. The north-south line passing directly overhead through the zenith.






14. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






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






16. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






17. The process that powers the sun and hydrogen bombs






18. The oldest terrain on the moon






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






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






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






22. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






23. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






24. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






25. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






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






27. A massive variable star used to find distances to the galaxies or clusters that contain them.






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






29. Sc galaxies






30. What is the universe expanding into?






31. The mass of an object divided by its volume






32. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






33. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






34. 10 nm 10^2 nm






35. The apparent backward motion of a planet against the background of stars.






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






37. The rotation period of the Earth measured relative to the stars.






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






39. The process that powers the sun and hydrogen bombs






40. 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.






41. A term referring to Earth-like planets






42. Mercury and venus






43. 100 nm 10 nm






44. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






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






46. Mercury and venus






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






48. Sc galaxies






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






50. 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