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. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






2. The law that describes the blackbody curve - and let to quantum mechanics.

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3. A crystalline patter found in iron meteorites






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






5. Form honeycomb like patterns surrounding empty or nearly empty voids.






6. A star without enough mass to begin hydrogen fusion






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






8. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






9. Centered on the Earth






10. When material is heated and moves taking the heat energy with it






11. A star that is in the process of forming. It glows from gravitational contraction






12. A bright area of higher temperature that often proceeds the formation of sunspots.






13. A perfect absorber and radiator of electromagnetic radiation.






14. 10^2 nm 10^7 nm






15. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






16. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






17. Large bulge - tightly wound spiral arms - relatively few h2 regions and are smooth






18. 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






19. A small chunk of rock in space






20. Half of the longest diameter across an ellipse






21. A fusion process in which protons build together to form helium






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






23. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






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






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






26. The rotation period of the Earth measured relative to the stars.






27. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






28. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






29. 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)






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






31. A small spherical dark nebula






32. Where is the center of the expansion






33. 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

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34. Then the Sun moves from north to south across the celestial equator (about September 23)






35. All possible types of energy that can be emitted and absorbed by atoms.






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






37. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






38. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






39. The high- temperatature outer layer of the sun






40. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






41. Dark areas on the sun that are cooler than the surrounding photosphere






42. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






43. A telescope that uses mirrors to focus light






44. A push or a pull






45. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






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






47. Jupiter - Saturn - Uranus - Neptune






48. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






49. Neptune or uranus






50. A term referring to the orbital character of stars near the Sun