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 larger bodies that formed early in teh solar nebula that were chemically differentiated






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






3. A galaxy sending out a stream of material from its nucleus






4. Saturn






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






6. Formed from slow rotating clouds - collapsed quicker - initial star formation rate is high but died out - older - little rotation - look redder






7. A high-pressure bulge in Neptune's southern hemisphere






8. The point in its orbit where a planet is farthest from the sun






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






10. The gap inthe outer portion of Saturn's A ring






11. Light scattered through the atmosphere that degrades astronomical images






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






13. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






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






15. Centered on the Earth






16. The place in the sky that the Earth's axis points toward (can be either north or south)






17. Flattened spherical distribution of old stars with some young stars too. 'hub' of Milky way - stars orbit with solid body speeds. Elongated into bar shape






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






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






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






21. A faint - remarkably uniform distribution of radiation in space






22. Mercury and venus






23. 10 cm -> 1 mm






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






25. Why does the earth have few craters while the moon has many?






26. A small and dim but hot star.






27. The place in the sky that the Earth's axis points toward (can be either north or south)






28. Cold aggregates of gas - large and contain a huge amount of matter - so cold that molecules stick together to form molecules.






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






30. Old - pock marked - icy surface - interior is not differentiated - geologically dead - NOT ACTIVE SURFACE






31. Is there water on the moon?






32. Rich= dense crowded cores of galaxies - poor= few members and a looser organization of galaxies






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






34. A spread of light with an uninterrupted wavelength distribution of energy.






35. Jupiter






36. Jupiter - Saturn - Uranus - Neptune






37. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






38. The point in its orbit where a planet is farthest from the sun






39. 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






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






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






42. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






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






44. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






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






46. A distance measure determined by the shifting of a star against the background sky every 6 months.






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






48. A push or a pull






49. A large and bright but cool star.






50. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)