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






2. Saturn






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






4. The average distance between the Earth and the Sun (=1.5 x10^8km)






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






6. The place in the sky that the Earth's axis points toward (can be either north or south)






7. The organized effort to find life elsewhere in the universe. (Search for Extra-Terrestrial Intelligence)






8. 1μm 100 nm






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






10. 10 cm -> 1 mm






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






12. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






13. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






14. 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)






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






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






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






18. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






19. Approximate speed of light in a vacuum






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






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






22. Jupiter






23. The law that syas light energy from a blackbody increases as (temperature^4)






24. The equation that describes how matter equates with energy






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






26. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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27. The oldest terrain on the moon






28. The fusion process that turns three helium nuclei into a carbon nucleus






29. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






30. A two-filter measure of the color - and hence temperature - of a star.






31. The displacement of spectral lines to redder colors caused by the expansion of the universe.






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






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






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






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






36. The science of measuring light energy by wavelength.






37. Venus






38. A galaxy sending out a stream of material from its nucleus






39. A star that erratically and explosively brightens and dims






40. Poitns of gravitational stability in the orbit of a planet






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






42. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






44. Venus






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






46. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






47. Poitns of gravitational stability in the orbit of a planet






48. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






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






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