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 larger bodies that formed early in teh solar nebula that were chemically differentiated






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






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






4. The elementary building blocks from which protons and neutrons are formed.






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






6. The process similar to conduction by which energy moves from the solar core to the convective layer






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






8. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






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






10. That which is responsible for Jupiter's magnetic field






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






12. Hurricane-like vortex in southern-hemisphere winds to north and south blow in opposite directions which keep it spinning and with no subsurface features like mountians it persists.






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






14. Centered on the Earth






15. Very center of galaxy. suggestion of a black hole






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






17. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






18. A particle of light






19. When the Moon entirely blocks the Sun.






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






21. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






22. The equation that describes how matter equates with energy






23. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






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






25. Neptune or uranus






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






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






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






29. The entity from which the whole universe is postulated to have come from.






30. Europa






31. Jupiter






32. The location in an H-are diagram of a star cluster - where stars have just left the main sequence. Used to estimate the cluster age.






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






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






35. The telescope configuration that has the focus placed at the back of the primary mirror






36. The oldest part of the Milky Way






37. 100 nm 10 nm






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






39. A small spherical dark nebula






40. The rate of expansion of the universe.






41. Europa






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






43. In what chemical form are jupiters nitrogen - carbon and oxygen?






44. The distance light travels in one year (=9.46x10^12km).






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






46. Flat disk with gas - dust - H2 regions - molecular clouds - dust young stars and remnants of old planetary nebula and supernova remnants. stars spin together with similar velocities called differential rotation






47. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






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






49. A measure of the force of gravity on an object






50. Large nebula consisting of very cold gas and dust