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. Places in the asteroid belt - caused by resonance with Jupiter - where there are no asteroids






3. First accurately measured the speed of light in a vacuum






4. The displacement of spectral lines to redder colors caused by the expansion of the universe.






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






6. 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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7. Hydrogen and helium (mainly)






8. Light-colored high-pressure bands in Jupiter's atmosphere






9. Light-flaky crust - convective currents cause it to wrinkle and bunch (1/5 of surface). uniform cratering suggests lack of weathering and tectonics. volcanoes are flat due to atmospheric pressure.






10. A rock or iron specimen that has fallen from space






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






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






13. The light produced when particles from the sun collide with atmospheric molecules






14. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






15. The most mass a white dwarf can have before collapsing to a neutron star






16. Mercury - Venus - Earth - Mars






17. A very distant - star-like object with huge - broad emission lines. Probably the nucleus of a distant active galaxy.






18. 10 nm 10^2 nm






19. The study of the universe as a whole.






20. A method of finding a star's distance from its absolute magnitude and spectral type or color.






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






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






23. 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.






24. A term referring to Jupiter-like planets






25. Titan






26. Why does the earth have few craters while the moon has many?






27. Relativity predicts that nothing can travel faster than the speed of light in a vacuum - How can it move slower?






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






29. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






30. What causes the zones and belts on jupiter and saturn?






31. The lowest energy of an atom.






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






33. Venus






34. Large nebula consisting of very cold gas and dust






35. 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.






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






37. The number of protons in an atom.






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






39. A galaxy emitting large amounts of energy at long wavelengths.






40. The oldest terrain on the moon






41. When massive objects bend space and time enough to create multiple images of an object located behind them






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






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






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






45. A huge sphere of tenuous gas surrounding the nucleus of a comet






46. The relation that tells how light dims with distance.






47. 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






48. Dying small mass stars lose their outer layers in a relatively gentle way - creating a round or bipolar nebula about the star (round like planets)






49. The wavelengths where a specific element can absorb or emit light.






50. A star that blows itself apart