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. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






2. A measure of the force of gravity on an object






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






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






5. Mercury - Venus - Earth - Mars






6. The imaginary sphere centered on the Earth that hols the stars.






7. The Big Bang says that the universe has not existed forever. It had a distinct beginning about 14 billion years ago called the 'Big Bang'. Therefore light from any object more than 14 billion light years away has not had time to reach us. The other p

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


8. Small moons that maintain the shape of rings around Saturn and Uranus






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






10. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






11. A push or a pull






12. An element of a highly efficient - two-dimensional electronic light detector






13. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






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






15. A telescope that uses mirrors to focus light






16. A galaxy emitting large amounts of energy at long wavelengths.






17. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






18. The area behind a lens where images are resolved






19. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






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






21. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






22. 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






23. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






24. Collections of young - hot stars






25. The organization of clusters of galaxies into sheets and strings






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






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






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






29. Ganymede and Titan






30. The family of radiant energy that includes light as a subset






31. The rotation period of the Earth measured relative to the Sun.






32. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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


33. Hydrogen and helium (mainly)






34. Moon in less than the angular diameter of the Sun.






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






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






37. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






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






39. 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)






40. N=are*Fp(Ne)(Fl)(Fi)(Fc)(L) N: number of civilizations possible to communicate with are*: rate solar-like stars are created Fp: fraction of stars with planets Ne: number of planets like ours Fl: fraction of planets with life Fi: intelligent life Fc:






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






42. A very dense - highly populated cluster of galaxies






43. In what chemical form are jupiters nitrogen - carbon and oxygen?






44. 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






45. Small moons that maintain the shape of rings around Saturn and Uranus






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






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. The lowest energy of an atom.






49. The oldest part of the Milky Way






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