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 volume of space where few - if any - galaxies are located






2. The first rock-sized bodies that formed in the solar nebula from dust grains






3. 1μm 100 nm






4. A plot of star absolute magnitude verses spectral type.






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






6. The mass of an object divided by its volume






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






8. Either Io -Europa - Ganymede - or Callisto






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






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






11. The point in its orbit where a planet is farthest from the sun






12. The light produced when particles from the sun collide with atmospheric molecules






13. The rock that makes up the lunar highlands






14. When massive objects bend space and time enough to create multiple images of an object located behind them






15. 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.






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






17. Large nebula consisting of very cold gas and dust






18. The study of the universe as a whole.






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






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






21. Jupiter






22. Is there water on the moon?






23. What causes the zones and belts on jupiter and saturn?






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






25. The location in the Milky Way where stars orbit like a solid wheel






26. 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






27. An evolved star - past the helium flash that is burning helium to carbon in it's cores






28. The surface of the sun






29. Light-colored high-pressure bands in Jupiter's atmosphere






30. The entity responsible for spiral arms in grand-design spiral galaxies






31. 1μm 100 nm






32. 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.






33. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






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






35. Mercury






36. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






37. The lowest energy of an atom.






38. The process that powers the sun and hydrogen bombs






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






40. The material from which the solar system formed






41. Very center of galaxy. suggestion of a black hole






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


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






44. The part of the Milky way that has on-going star formation






45. A perfect absorber and radiator of electromagnetic radiation.






46. 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






47. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






48. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






49. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






50. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process