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. A telescope that uses lenses to focus light






3. The measure of a variable star's apparent magnitude as it brightens and dims with time






4. 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.






5. How did Earth come to have an oxygen rich atmosphere?






6. Moon in less than the angular diameter of the Sun.






7. 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






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






9. The law that syas light energy from a blackbody increases as (temperature^4)






10. A logarithmically scaled value for the measured brightness of a star.






11. The area behind a lens where images are resolved






12. A representation of the changes in color and brightness of an evolving protostar.






13. 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.






14. VENUS






15. The layer of the sun just above the photosphere






16. 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






17. After stars form they pump light energy into surrounding gas causing it to heat up and glow (H2=ionized hydrogen - H1= neutral hydrogen in molcular couds)






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






19. The lens in a telescope used to determine the magnification






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






21. 10 cm -> 1 mm






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






23. Small moons that maintain the shape of rings around Saturn and Uranus






24. 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)






25. Light scattered through the atmosphere that degrades astronomical images






26. What Ole Roemer used to measure the speed of light in a vacuum






27. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






28. 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)






29. The oldest grouping of stars - found in the galaxy halo






30. A plot of star absolute magnitude verses spectral type.






31. 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)






32. VENUS






33. A star without enough mass to begin hydrogen fusion






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






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






36. Poitns of gravitational stability in the orbit of a planet






37. Jupiter






38. The study of the universe as a whole.






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






40. The dark - relativley smooth areas on the moon; Latin for sea






41. The oldest part of the Milky Way






42. The point in its orbit where a planet is nearest the sun






43. A term referring to the orbital character of stars near the Sun






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






45. Matter that reveals itself only through its gravitational attraction






46. A planet that is farther from the sun than the Earth is






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






48. Jupiter






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






50. The surface of the sun