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. 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






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






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






4. Mercury






5. 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.






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. Any change in the speed or direction of an object's motion






8. Form honeycomb like patterns surrounding empty or nearly empty voids.






9. The mass of an object divided by its volume






10. Orbit in Jupiters orbit






11. The lowest energy of an atom.






12. A measure of the ability of a telescope to see fine detail






13. A star without enough mass to begin hydrogen fusion






14. The force of attraction between any two objects having mass






15. 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.






16. Either Io -Europa - Ganymede - or Callisto






17. The oldest terrain on the moon






18. The mirror that gathers the light in a reflector






19. Sulfurous volcanoes - pools of liquid sulfur - surface resembles cheese pizza ACTIVE SURFACE






20. The mass of an object divided by its volume






21. Material that shoots rapidly out into space. Flares cause Auroras






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






23. A small and dim but hot star.






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






25. A crystalline patter found in iron meteorites






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






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






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






29. Light scattered through the atmosphere that degrades astronomical images






30. The location of a supermassive black hole






31. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






32. Sc galaxies






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






34. Collections of young - hot stars






35. Matter that reveals itself only through its gravitational attraction.






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






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






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






39. Infinitely long -> 10 cm






40. An empirical scheme for predictin ghe orbital distances of planets






41. 1 mm 1μm






42. 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






43. A subatomic particle with a negative charge. It creates light.






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






45. Matter that reveals itself only through its gravitational attraction






46. When the Sun is farthest north of the celestial equator (about June 22)






47. 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






48. Approximate speed of light in a vacuum






49. Distribution of dust (tells us disk is thin) - find distances to O&B stars and H2 regions (arms are sights of star formation and OB stars live and die at location of birth) -Milky way has four arms. Sun is in spur apart from arms.






50. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.