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. 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.






2. A prominence seen against the disk of the sun






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






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






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






6. The layer of the sun just above the photosphere






7. A word meaning 'the same in all directions.'






8. Venus






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






10. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






11. The telescope configuration that has the focus placed at the back of the primary mirror






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






13. Where is the center of the expansion






14. 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)






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

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16. A term referring to Jupiter-like planets






17. The location in the Milky Way where stars orbit like a solid wheel






18. How did Earth come to have an oxygen rich atmosphere?






19. Venus






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






21. 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.






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






23. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






24. The process of acquiring material






25. The mix of pure photon energy that emerged at the start of the universe.






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






27. Centered on the Earth






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






29. A term referring to Jupiter-like planets






30. A spinning neutron star






31. 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)






32. Mercury






33. When a planet lines up with the sun inthe sky






34. 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.






35. 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)






36. IO






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






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

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39. Venus (retrograde)






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






41. The family of radiant energy that includes light as a subset






42. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






43. When a planet lines up with the sun inthe sky






44. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






45. A star that erratically and explosively brightens and dims






46. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






47. 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.






48. The distance a moon can be from a planet before shattering from tidal forces






49. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






50. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)







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Can you answer 50 questions in 15 minutes?


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