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 powdered stone fragments that make up the lunar 'soil'






2. Mercury and venus






3. 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.






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






5. A planet that is farther from the sun than the Earth is






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






7. Light scattered through the atmosphere that degrades astronomical images






8. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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9. The surface of the sun






10. A star that blows itself apart






11. Jupiter






12. Europa






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






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






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






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






17. IO






18. Jupiter - Saturn - Uranus - Neptune






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






20. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






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






22. The 'edge' of the universe. Light beyond this has not reached us yet.






23. The surface of the sun






24. 10 nm 10^2 nm






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






26. The rate of expansion of the universe.






27. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






28. Europa






29. The study of the universe as a whole.






30. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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






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






33. The rock that makes up the lunar highlands






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






35. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






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






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






38. When the Moon entirely blocks the Sun.






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






40. The rock that makes up the lunar maria






41. 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.






42. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






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






44. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






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






46. 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






47. Approximate speed of light in a vacuum






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






49. Matter that reveals itself only through its gravitational attraction.






50. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.