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. 10^2 nm 10^7 nm






2. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






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






4. A point in the sky where meteors appear to come from during a shower






5. Jupiter - Saturn - Uranus - Neptune






6. A bridge of material held in position above the solar surface. They can remain for hours even days






7. The distance a moon can be from a planet before shattering from tidal forces






8. Saturn






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. The oldest terrain on the moon






11. Jupiter






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






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






14. The apparent path of the Sun through the stars on the celestial sphere.






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






16. A force exerted by reflecting sunlight






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






18. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






19. All wavelengths of light emitted by a blackbody.






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






21. All possible types of energy that can be emitted and absorbed by atoms.






22. The layer of the sun just above the photosphere






23. The rotation period of the Earth measured relative to the stars.






24. 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.






25. 1μm 100 nm






26. Why do Galaxies move very rapidly in the interiors of the dense clusters?






27. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






28. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






29. IO






30. 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






31. A streak of light in the atmosphere






32. A word meaning 'the same everywhere throughout.'






33. An empirical scheme for predictin ghe orbital distances of planets






34. The science of measuring light energy by wavelength.






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






36. The gap inthe outer portion of Saturn's A ring






37. The amount an image is enlarged by a telescope






38. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






39. A small spherical dark nebula






40. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






41. 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






42. A push or a pull






43. The process similar to conduction by which energy moves from the solar core to the convective layer






44. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






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






46. 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.






47. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






48. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






49. The surface of the sun






50. Light scattered through the atmosphere that degrades astronomical images