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. 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






2. The act of removing an electron from an atom.






3. 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






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






5. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






6. 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.






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






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






9. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






10. 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.






11. A highly variable galaxy nucleus of which BL Lac is one. Their light is highly energetic and their spectra are featureless. (face on)






12. The family of radiant energy that includes light as a subset






13. The apparent path of the Sun through the stars on the celestial sphere.






14. Long - meandering cliff formed when a planet surface cools and shrinks






15. The layer of the sun just above the photosphere






16. The act of removing an electron from an atom.






17. Is there water on the moon?






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






19. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






20. A push or a pull






21. The point in its orbit where a planet is nearest the sun






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






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






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






25. 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.






26. The mass of an object divided by its volume






27. A planet orbiting about a distant star






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






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






30. When one side of a body always faces the planet it revolves around






31. Extremely round - lots of liquid water - ice rafts on surface ACTIVE SURFACE






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






33. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






34. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






35. 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






36. Ganymede and Titan






37. 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.






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






39. Hydrogen and helium (mainly)






40. Sc galaxies






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






42. 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.






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






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






45. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






46. The crust of a meteorite caused by its entry into Earth's atmosphere






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






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






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






50. The shadow area behind the Earth or Moon where the Sun is completely obscured.







Sorry!:) No result found.

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