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. The distance between a lens and its focal plane






2. 10 cm -> 1 mm






3. The shadow behind the Earth or Moon where the Sun is partially obscured.






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






5. Where is the center of the expansion






6. The process that powers the sun and hydrogen bombs






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






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






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






10. Is there water on the moon?






11. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






12. VENUS






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






14. The rotation of a star or planet at different speeds at its equator and poles






15. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






16. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






17. The equation that describes how matter equates with energy






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

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19. 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)






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






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






22. A force exerted by reflecting sunlight






23. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






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






25. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






26. A streak of light in the atmosphere






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






28. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






29. The mirror that gathers the light in a reflector






30. 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






31. A high-pressure bulge in Neptune's southern hemisphere






32. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






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






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






35. Matter that reveals itself only through its gravitational attraction






36. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






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






38. The dimming of starlight by intervening dust






39. Sc galaxies






40. The process responsible for creating the arms of flocculent spiral galaxies






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






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






43. 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)






44. The process of acquiring material






45. A prominence seen against the disk of the sun






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






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






48. Saturn






49. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






50. A particle of light







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Can you answer 50 questions in 15 minutes?


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