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 push or a pull






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






3. A term referring to Jupiter-like planets






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






5. What do we think the actual fate of the universe will be and why do we think this?






6. A term referring to Earth-like planets






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






8. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






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






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






11. The oldest part of the Milky Way






12. Is space infinitely large?

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13. The location of a supermassive black hole






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






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






16. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






17. Mercury






18. 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 ________.






19. A change in the appearance of the sun at the edge of the solar disk






20. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






22. Titan






23. A faint - remarkably uniform distribution of radiation in space






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






25. The area behind a lens where images are resolved






26. What is the universe expanding into?






27. Where is the center of the expansion






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






29. The sinking of denser elements to the center of a young molten planet






30. The process of acquiring material






31. The oldest part of the Milky Way






32. Neptune or uranus






33. 10^2 nm 10^7 nm






34. 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)






35. A small spherical dark nebula






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






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






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






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






40. 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.






41. The oldest terrain on the moon






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






43. Any change in the speed or direction of an object's motion






44. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






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






46. Light scattered through the atmosphere that degrades astronomical images






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






48. Poitns of gravitational stability in the orbit of a planet






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






50. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.