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. Half of the longest diameter across an ellipse






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






3. 10 cm -> 1 mm






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






5. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






6. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






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






8. A location on an H-are Diagram where evolving stars pulsate






9. A term referring to Jupiter-like planets






10. A logarithmically scaled value for the measured brightness of a star.






11. Matter that reveals itself only through its gravitational attraction






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






13. A point in the sky where meteors appear to come from during a shower






14. IO






15. Mercury






16. Mercury






17. Titan






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






19. Large nebula consisting of very cold gas and dust






20. A huge sphere of tenuous gas surrounding the nucleus of a comet






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






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






23. What are the three possible geometries of the universe?






24. Electromagnetic Radiation






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






26. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






27. Jupiter - Saturn - Uranus - Neptune






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






29. Form honeycomb like patterns surrounding empty or nearly empty voids.






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






31. The layer of the sun just above the photosphere






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






33. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






34. 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 ________.






35. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






36. An important quality of telescopes that increases as the square of the primary mirror or objective lens






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






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






39. Large nebula consisting of very cold gas and dust






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






41. When the Moon entirely blocks the Sun.






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






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

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44. What is the universe expanding into?






45. A term referring to the orbital character of stars near the Sun






46. A term referring to Earth-like planets






47. What are the three possible geometries of the universe?






48. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






49. A small and dim but hot star.






50. A galaxy emitting large amounts of energy at long wavelengths.







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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