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






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






3. All wavelengths of light emitted by a blackbody.






4. Centered on the sun.






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






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






7. A phenomenon seen when the Earth passes through the orbit of a burned out comet






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






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






10. The mirror that gathers the light in a reflector






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






12. The point directly overhead.






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. A collection of galaxies like the one the Milky Way belongs to






15. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






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






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






18. The wavelengths where a specific element can absorb or emit light.






19. A streak of light in the atmosphere






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






21. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






22. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






23. Mercury and venus






24. The mix of pure photon energy that emerged at the start of the universe.






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






26. An energetic event taking place in the early universe






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






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






29. What is the universe expanding into?






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






31. The apparent backward motion of a planet against the background of stars.






32. A term referring to Earth-like planets






33. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






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






35. The measure of a variable star's apparent magnitude as it brightens and dims with time






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






37. What do we think the actual fate of the universe will be and why do we think this?






38. The temp at which a substance in the vacuum of space solidifies






39. What Ole Roemer used to measure the speed of light in a vacuum






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






42. The slow wobble of the Earth on its rotation axis.






43. A bridge of material held in position above the solar surface. They can remain for hours even days






44. A massive variable star used to find distances to the galaxies or clusters that contain them.






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






46. A particle of light






47. Ganymede and Titan






48. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






49. The rock that makes up the lunar highlands






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