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. Venus






2. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






3. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






4. Venus (retrograde)






5. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






6. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






7. The relation that tells how light dims with distance.






8. A volume of space where few - if any - galaxies are located






9. 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)






10. The seasonal shifting of a nearby star's position relative to more distant objects.






11. A small chunk of rock in space






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






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






14. 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 ________.






15. The process responsible for creating the arms of flocculent spiral galaxies






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






17. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






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






19. 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






20. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






21. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






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






23. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






24. A term referring to Earth-like planets






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






26. Mercury






27. The lens that gathers the light in a refractor






28. The name for the only seriously considered theory of the universe.






29. The rate of expansion of the universe.






30. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






31. A streak of light in the atmosphere






32. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






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






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






35. Radiation given off by electrons accelerating in a magnetic field






36. The rock that makes up the lunar highlands






37. An energetic event taking place in the early universe






38. The study of the universe as a whole.






39. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






40. VENUS






41. Matter that reveals itself only through its gravitational attraction.






42. 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.






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






44. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






45. A rock or iron specimen that has fallen from space






46. The rock that makes up the lunar maria






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






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






49. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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