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. Population 1 with higher metals and contain many young stars in star clusters. Distribution of stars is everywhere in disk (arms only have 5% more stars)






2. 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.






3. 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






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






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






6. When a planet lines up with the sun inthe sky






7. The normal eastward movement of a planet against the background of hte distant stars.






8. Light-colored high-pressure bands in Jupiter's atmosphere






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






10. A measure of how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






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






12. Ganymede and Titan






13. Collections of young - hot stars






14. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






15. The layer of the sun just above the photosphere






16. The apparent path of the Sun through the stars on the celestial sphere.






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






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






19. 10^2 nm 10^7 nm






20. A technique using computer-controlled mirrors to sharpen images distorted by the atmosphere






21. The process of acquiring material






22. The area behind a lens where images are resolved






23. Jupiter - Saturn - Uranus - Neptune






24. The equation that describes how matter equates with energy






25. 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.






26. A spectrum of light with energy at only a few wavelengths.






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






28. 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 ________.






29. A continuous spectrum of light missing energy at a few wave lengths.






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






31. The mirror that gathers the light in a reflector






32. A word used in astronomy to describe all elements besides hydrogen and helium






33. When material is heated and moves taking the heat energy with it






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






35. Approximate speed of light in a vacuum






36. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






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






38. The distance between a lens and its focal plane






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






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






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






42. Distance from sun to nucleus- 8 kiloparsecs (26000 LY) - diameter of Milky way- 150000 LY - length for sun to orbit once around milky way- 250 million years






43. Jupiter






44. Medium bulge - moderately would arms - arms have H2 regions in them and look sort of lumpy






45. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






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






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






48. The rate of expansion of the universe.






49. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






50. 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