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






2. 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.






3. Venus (retrograde)






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






5. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.






6. The light produced when particles from the sun collide with atmospheric molecules






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






8. A spectrum of light with energy at only a few wavelengths.






9. A method of finding a star's distance from its absolute magnitude and spectral type or color.






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






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






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






13. The 'edge' of the universe. Light beyond this has not reached us yet.






14. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






15. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






16. The projection of the Earth's equator onto the celestial sphere.






17. Mercury






18. 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)






19. A telescope that uses lenses to focus light






20. The law that describes the blackbody curve - and let to quantum mechanics.

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






22. Matter that reveals itself only through its gravitational attraction






23. A large and bright but cool star.






24. A quantity measuring the stability of the Earth's atmosphere






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






26. A continuous spectrum of light missing energy at a few wave lengths.






27. A particle of light






28. First accurately measured the speed of light in a vacuum






29. 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)






30. Ganymede and Titan






31. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






32. An energetic event taking place in the early universe






33. 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.






34. First accurately measured the speed of light in a vacuum






35. 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.






36. A rock or iron specimen that has fallen from space






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






38. 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.






39. The location of a supermassive black hole






40. 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 _____.






41. The entity from which the whole universe is postulated to have come from.






42. Jupiter - Saturn - Uranus - Neptune






43. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






44. Light scattered through the atmosphere that degrades astronomical images






45. A two-filter measure of the color - and hence temperature - of a star.






46. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






47. A bright area of higher temperature that often proceeds the formation of sunspots.






48. Large nebula consisting of very cold gas and dust






49. The Greek philosopher responsible for making the stellar magnitude scale.






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