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






2. A logarithmically scaled value for the measured brightness of a star.






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






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






5. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






6. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






7. 10 nm 10^2 nm






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






9. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






10. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






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






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






13. The linear correlation between the rate of the expansion of the universe and distance. Says that as galaxies get farther away in space - the speed with which they recede from us increases. So we can measure the amount of recessional velocity and use






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






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






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






17. The gap etween saturn's A and B rings






18. A long-lived high-pressure bulge in Jupiter's southern hemisphere






19. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






20. The universe is isotropic - homogeneous - and without beginning or end in time and space. If the universe is truly homogeneous then every line of sight will eventually end on a galaxy. If it has existed forever then there has been enough time for lig

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21. Electromagnetic Radiation






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






23. Centered on the Earth






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






25. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






26. Large nebula consisting of very cold gas and dust






27. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






28. Extends to a distance of 50000AU. Same objects as in the Kuiper belt-when they fall in toward the sun they become comets. Debris from comets hitting the Earths atmosphere cause meteor showers.






29. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






30. Europa






31. The powdered stone fragments that make up the lunar 'soil'






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






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






34. 10^2 nm 10^7 nm






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






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






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






38. Small moons that maintain the shape of rings around Saturn and Uranus






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






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

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41. A force exerted by reflecting sunlight






42. A star without enough mass to begin hydrogen fusion






43. When the Sun is farthest south of the celestial equator (About December 22)






44. The Greek philosopher responsible for making the stellar magnitude scale.






45. Venus






46. Small moons that maintain the shape of rings around Saturn and Uranus






47. The law that predicts the possible types of spectra.

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

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






50. The science of measuring light energy by wavelength.







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