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. Venus






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






3. A force exerted by reflecting sunlight






4. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






5. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






6. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






7. Thick rigid crust - no longer has plate tectonics but still has convective hot spots that create earth-like volcanoes except that last for billions of years because of lack of tectonics.






8. Is space infinitely large?

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






10. The source of the force that is accelerating the expansion rate of the universe.






11. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






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






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






14. 100 nm 10 nm






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






16. Possible Fates of the Universe






17. The location of a supermassive black hole






18. The oldest part of the Milky Way






19. The location around an atom where an electron resides.






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






21. A large and bright but cool star.






22. Mercury






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






24. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






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






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






27. A word used in astronomy to describe all elements besides hydrogen and helium






28. A fusion process in which protons build together to form helium






29. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






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






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






32. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






33. Where is the center of the expansion






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






35. A force exerted by reflecting sunlight






36. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






37. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






38. The layer of the sun just above the photosphere






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






40. A small chunk of rock in space






41. The material from which the solar system formed






42. A spread of light with an uninterrupted wavelength distribution of energy.






43. 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.






44. 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.






45. 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.






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






47. Radiation given off by electrons accelerating in a magnetic field






48. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






49. Earth






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






Can you answer 50 questions in 15 minutes?



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