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. A logarithmically scaled value for the measured brightness of a star.






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






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






4. An object that may remain after a star explodes






5. 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.






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






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






8. The gap etween saturn's A and B rings






9. Jupiter






10. Large nebula consisting of very cold gas and dust






11. An energetic event taking place in the early universe






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






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






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






15. 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.






16. 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.






17. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






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






19. The Greek philosopher responsible for making the stellar magnitude scale.






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






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






22. Form honeycomb like patterns surrounding empty or nearly empty voids.






23. A younger cluster of stars - found in the galaxy disk






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






25. Ganymede






26. Europa






27. The dark - relativley smooth areas on the moon; Latin for sea






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






29. Electromagnetic Radiation






30. 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.






31. Mercury






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






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






34. The entity from which the whole universe is postulated to have come from.






35. Earth






36. Ganymede






37. The rock that makes up the lunar highlands






38. A star without enough mass to begin hydrogen fusion






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

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


40. The distance between a lens and its focal plane






41. Venus






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






43. 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.






44. Large nebula consisting of very cold gas and dust






45. 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.






46. Hydrogen and helium (mainly)






47. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






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






49. The point in its orbit where a planet is nearest the sun






50. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE