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






2. A small round distribution of gas surrounding a dying star






3. 100 nm 10 nm






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






5. Infinitely long -> 10 cm






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






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






8. A telescope that uses lenses to focus light






9. 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.






10. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






11. Ganymede






12. Jupiter






13. The crust of a meteorite caused by its entry into Earth's atmosphere






14. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






15. Possible Fates of the Universe






16. 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.






17. Venus






18. Either Io -Europa - Ganymede - or Callisto






19. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






20. A particle of light.






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






22. A star without enough mass to begin hydrogen fusion






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






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






25. Mercury






26. The mass of an object divided by its volume






27. A two-filter measure of the color - and hence temperature - of a star.






28. 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.






29. Mercury






30. What causes the zones and belts on jupiter and saturn?






31. When the Moon entirely blocks the Sun.






32. The act of removing an electron from an atom.






33. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






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






35. 1 mm 1μm






36. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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37. The rock that makes up the lunar highlands






38. Any class of objects with a uniform luminosity used to determine distance.






39. The layer of the sun just above the photosphere






40. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






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






42. A prominence seen against the disk of the sun






43. A perfect absorber and radiator of electromagnetic radiation.






44. The process of acquiring material






45. When the Sun is farthest south of the celestial equator (About December 22)






46. An energetic event taking place in the early universe






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






48. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






49. A star without enough mass to begin hydrogen fusion






50. Is there water on the moon?