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 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.






2. Where is the center of the expansion






3. A term referring to Earth-like planets






4. What Ole Roemer used to measure the speed of light in a vacuum






5. 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)






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






7. The study of the universe as a whole.






8. What is the universe expanding into?






9. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






10. Europa






11. A word meaning 'the same in all directions.'






12. Large nebula consisting of very cold gas and dust






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






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






15. A repeated - periodic push or pull capable of summing into a larger push or pull






16. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






17. When the Sun is farthest north of the celestial equator (about June 22)






18. 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.






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






20. 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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


21. The projection of the Earth's equator onto the celestial sphere.






22. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






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






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






25. A telescope that uses lenses to focus light






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






27. The source of the force that is accelerating the expansion rate of the universe.






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






29. A large and bright but cool star.






30. 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.






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






32. Approximate speed of light in a vacuum






33. 10 nm 10^2 nm






34. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






35. Mercury and venus






36. Any change in the speed or direction of an object's motion






37. The mass of an object divided by its volume






38. Sc galaxies






39. A streak of light in the atmosphere






40. Hot cells of gas that rise and fall in the hotosphere






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






42. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






43. Half of the longest diameter across an ellipse






44. The dimming of starlight by intervening dust






45. A star that blows itself apart






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






47. Any change in the speed or direction of an object's motion






48. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






49. What is the universe expanding into?






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