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






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






3. The oldest part of the Milky Way






4. Saturn






5. The organization of clusters of galaxies into sheets and strings






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






7. Mercury - Venus - Earth - Mars






8. Jupiter






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






10. When particles are compressed to an unnatural state where their pressure is not related to their temperature






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






12. The location of a supermassive black hole






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






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






15. Half of the longest diameter across an ellipse






16. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






17. A small spherical dark nebula






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






19. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






20. The shadow area behind the Earth or Moon where the Sun is completely obscured.






21. Long - meandering cliff formed when a planet surface cools and shrinks






22. A very dense - highly populated cluster of galaxies






23. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






24. 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)






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






26. The oldest terrain on the moon






27. 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






28. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






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






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






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






32. A star that is in the process of forming. It glows from gravitational contraction






33. The force of attraction between any two objects having mass






34. The powdered stone fragments that make up the lunar 'soil'






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






36. A word used in astronomy to describe all elements besides hydrogen and helium






37. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






38. Material that shoots rapidly out into space. Flares cause Auroras






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






40. The most mass a white dwarf can have before collapsing to a neutron star






41. Matter that reveals itself only through its gravitational attraction






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






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






44. An energetic event taking place in the early universe






45. The lens in a telescope used to determine the magnification






46. A telescope that uses mirrors to focus light






47. Collections of young - hot stars






48. A small chunk of rock in space






49. 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.






50. The high- temperatature outer layer of the sun