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






2. Titan






3. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






5. Mercury






6. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






7. The north-south line passing directly overhead through the zenith.






8. 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.






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






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






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






12. 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)






13. The science of measuring light energy by wavelength.






14. The distance light travels in one year (=9.46x10^12km).






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






16. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






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






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






19. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






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






22. That which is responsible for Jupiter's magnetic field






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






24. A star without enough mass to begin hydrogen fusion






25. A particle of light






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






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






28. The surface of the sun






29. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






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






31. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






32. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






33. Clouds of low density gas often found glowing faintly on either side of an AGN.






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






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






36. Venus (retrograde)






37. The amount an image is enlarged by a telescope






38. The first rock-sized bodies that formed in the solar nebula from dust grains






39. 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.






40. Ganymede






41. 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.






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






43. The oldest grouping of stars - found in the galaxy halo






44. Ganymede and Titan






45. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






46. Either Io -Europa - Ganymede - or Callisto






47. The relation that tells how light dims with distance.






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






49. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






50. An energetic event taking place in the early universe