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. When particles are compressed to an unnatural state where their pressure is not related to their temperature






2. 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.






3. Neptune or uranus






4. Mercury






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






6. The average distance between the Earth and the Sun (=1.5 x10^8km)






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






8. Clouds of low density gas often found glowing faintly on either side of an AGN.






9. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






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






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






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






13. Ganymede






14. An object that may remain after a star explodes






15. The average distance between the Earth and the Sun (=1.5 x10^8km)






16. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






17. The point where a superior planet is as far away from the sun as it can be (as seen from the Earth)






18. A telescope that uses lenses to focus light






19. The assumption that the universe is isotropic (same in all directions) and homogeneous (Same everywhere throughout)






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






21. Light scattered through the atmosphere that degrades astronomical images






22. 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






23. A very low mass particle formed in solar fusion reactions that reacts only weakly with matter






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






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






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






27. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






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






29. Large nebula consisting of very cold gas and dust






30. Venus (retrograde)






31. Stars orvits do not define the spiral patterns - instead they are density waves that move at slower speeds (arms are defined by young O and B stars and gas clouds)






32. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






33. A younger cluster of stars - found in the galaxy disk






34. 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.






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






36. A small round distribution of gas surrounding a dying star






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






38. When the Sun moves from south to north across the celestial equator (about March 21)






39. Is there water on the moon?






40. The projection of the Earth's equator onto the celestial sphere.






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






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






43. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






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






45. What do we think the actual fate of the universe will be and why do we think this?






46. A star fusing hydrogen to helium in it's core






47. The trapping of heat by carbon dioxide or other gases in the Earth's atmosphere.






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






49. The first rock-sized bodies that formed in the solar nebula from dust grains






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