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 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.






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






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






4. 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






5. Electromagnetic Radiation






6. The mirror that gathers the light in a reflector






7. When the Sun moves from south to north across the celestial equator (about March 21)






8. A star fusing hydrogen to helium in it's core






9. The 'edge' of the universe. Light beyond this has not reached us yet.






10. The layer of the sun just above the photosphere






11. A spread of light with an uninterrupted wavelength distribution of energy.






12. The mass of an object divided by its volume






13. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






14. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






15. 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.






16. Mercury






17. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






18. Light scattered through the atmosphere that degrades astronomical images






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






20. The measure of a variable star's apparent magnitude as it brightens and dims with time






21. Jupiter - Saturn - Uranus - Neptune






22. Jupiter






23. Saturn






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






25. A phenomenon seen when the Earth passes through the orbit of a burned out comet






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






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






28. An energetic event taking place in the early universe






29. Sc galaxies






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






31. The oldest part of the Milky Way






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






33. 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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34. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






35. The material from which the solar system formed






36. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






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

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






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






40. The movement of the Earth's crustal plates riding on top of the mantle.






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






42. The material from which the solar system formed






43. A continuous spectrum of light missing energy at a few wave lengths.






44. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






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






46. 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.






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






48. The mass of an object divided by its volume






49. Venus






50. 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.







Sorry!:) No result found.

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