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. 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 ________.






2. Orbit in Jupiters orbit






3. Is there water on the moon?






4. The amount an image is enlarged by a telescope






5. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






6. A term referring to Earth-like planets






7. 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






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






9. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






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






11. 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)






12. The mirror that gathers the light in a reflector






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

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14. Centered on the sun.






15. When the Sun is farthest south of the celestial equator (About December 22)






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






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






18. A planet that is closer to the sun than the earth






19. Hydrogen and helium (mainly)






20. 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)






21. An object that may remain after a star explodes






22. Possible Fates of the Universe






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






24. Hydrogen and helium (mainly)






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






26. How is the Hubble Law consistent with an expanding universe?






27. A star that erratically and explosively brightens and dims






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






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. Sc galaxies






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






32. The process of acquiring material






33. Matter that reveals itself only through its gravitational attraction






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






35. 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)






36. Venus






37. A push or a pull






38. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






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

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40. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






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






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

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43. Titan






44. 10^2 nm 10^7 nm






45. Radiation given off by electrons accelerating in a magnetic field






46. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






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






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






49. An element of a highly efficient - two-dimensional electronic light detector






50. The point directly overhead.