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. The law that describes the blackbody curve - and let to quantum mechanics.


2. Light scattered through the atmosphere that degrades astronomical images






3. The law that predicts the possible types of spectra.


4. A two-filter measure of the color - and hence temperature - of a star.






5. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






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






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






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. A planet that is closer to the sun than the earth






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






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






12. Mercury






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






14. Collections of young - hot stars






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






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






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






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






19. A term referring to Earth-like planets






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






21. The material from which the solar system formed






22. Europa






23. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






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






25. The number of protons in an atom.






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






27. Venus






28. A star that is in the process of forming. It glows from gravitational contraction






29. An energetic event taking place in the early universe






30. A massive variable star used to find distances to the galaxies or clusters that contain them.






31. 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.






32. The rock that makes up the lunar highlands






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






34. Jupiter - Saturn - Uranus - Neptune






35. Radiation given off by electrons accelerating in a magnetic field






36. The mix of pure photon energy that emerged at the start of the universe.






37. The mass of an object divided by its volume






38. Neptune or uranus






39. The rotation period of the Earth measured relative to the stars.






40. A location on an H-are Diagram where evolving stars pulsate






41. Either Io -Europa - Ganymede - or Callisto






42. A term referring to Jupiter-like planets






43. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






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






45. The process of acquiring material






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






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






48. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






49. A volume of space where few - if any - galaxies are located






50. IO