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 measure of the ability of a telescope to see fine detail






2. Mercury






3. The family of radiant energy that includes light as a subset






4. Approximate speed of light in a vacuum






5. The fusion process that turns three helium nuclei into a carbon nucleus






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






7. An entity that is likely in the nucleus of most - if not all - galaxies.






8. 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.






9. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






10. An energetic event taking place in the early universe






11. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






12. Largest moon in solar system - two differenet types of terrain - darker terrain is older - NOT ACTIVE SURFACE






13. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






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






15. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






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






17. How is the Hubble Law consistent with an expanding universe?






18. The cosmological principle is the assumption that the universe is isotropic and homogeneous.The Big Bang assumes it to be a correct principle so that what we observe is exactly like What is too far away to be observed.






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






20. 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)






21. Matter that reveals itself only through its gravitational attraction






22. A perfect absorber and radiator of electromagnetic radiation.






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






24. Norhern lowlands- darker in color and have far fewer craters as if an ancient sea or ice field covered them. southern highlands- much higher in density of craters.






25. A star that erratically and explosively brightens and dims






26. Mercury






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






28. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






29. IO






30. The movement of the Earth's crustal plates riding on top of the mantle.






31. 10 cm -> 1 mm






32. Jupiter






33. Centered on the Earth






34. A bright area of higher temperature that often proceeds the formation of sunspots.






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






36. A prominence seen against the disk of the sun






37. A long-lived high-pressure bulge in Jupiter's southern hemisphere






38. The rate of expansion of the universe.






39. A telescope that uses lenses to focus light






40. That which is responsible for Jupiter's magnetic field






41. IO






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






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






44. Hydrogen and helium (mainly)






45. 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.






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






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






48. A fusion process in which a carbon atom transmutes to oxygen and back - creating a helium atom in the process






49. 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.






50. The number of protons in an atom.