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. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






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






3. 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.






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






5. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






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






7. Jupiter - Saturn - Uranus - Neptune






8. Stars fromt he Halo that have drifted into the disk. as earth zooms past them in a faster orbit they appear to be going backward very fast






9. The mirror that determines the focus configuration of a reflector






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






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






12. Ganymede and Titan






13. 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






14. Any class of objects with a uniform luminosity used to determine distance.






15. The shadow behind the Earth or Moon where the Sun is partially obscured.






16. Europa






17. The sinking of denser elements to the center of a young molten planet






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






19. The rotation period of the Earth measured relative to the Sun.






20. The surface of the sun






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






22. Sc galaxies






23. The north-south line passing directly overhead through the zenith.






24. 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.






25. 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.






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






27. The lowest energy of an atom.






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






29. 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)






30. A cool collection of gas and dust silhouetted against a brighter background of stars and/or gas






31. The slow wobble of the Earth on its rotation axis.






32. 10^2 nm 10^7 nm






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






34. The rotation of a star or planet at different speeds at its equator and poles






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






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






37. The apparent backward motion of a planet against the background of stars.






38. Dark - reddish - low-pressure bands in Jupiter's atmosphere






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






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






41. Mercury






42. 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






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






44. 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)






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






46. 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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


47. Any class of objects with a uniform luminosity used to determine distance.






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






49. An evolved star - past the helium flash that is burning helium to carbon in it's cores






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