Test your basic knowledge |

Subject : science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






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






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






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






5. The imaginary sphere centered on the Earth that hols the stars.






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






7. When the Sun is farthest north of the celestial equator (about June 22)






8. The rotation of a star or planet at different speeds at its equator and poles






9. Galaxies whose nuclei emit jets of materil at high speeds. material comes from supermassive black holes






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






11. Saturn






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






13. How did Earth come to have an oxygen rich atmosphere?






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






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






16. If stars have diff orbital periods - than any arms formed by stars will wind into a tight spiral pattern (billion yrs or so)






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






18. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






19. The faint glow of light left over from the Big Bang. cosmic microwave background are the photons that remain after the big bang that have not turned into matter.






20. 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






21. Electromagnetic Radiation






22. A quantity measuring the stability of the Earth's atmosphere






23. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






24. 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






25. The amount an image is enlarged by a telescope






26. A location on an H-are Diagram where evolving stars pulsate






27. The distance a moon can be from a planet before shattering from tidal forces






28. A faint - remarkably uniform distribution of radiation in space






29. 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.






30. Is there water on the moon?






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






32. An entity that is likely in the nucleus of most - if not all - galaxies.






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






34. A point in the sky where meteors appear to come from during a shower






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






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






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






38. The distance between a lens and its focal plane






39. A particle of light.






40. Venus






41. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






42. Is space infinitely large?

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43. Elliptical orbits that come inside orbit of the Earth.






44. When the Sun is farthest north of the celestial equator (about June 22)






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






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






47. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






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






49. IO






50. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere