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 rock that makes up the lunar maria






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






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






4. The rock that makes up the lunar highlands






5. The crust of a meteorite caused by its entry into Earth's atmosphere






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






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






8. Jupiter - Saturn - Uranus - Neptune






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






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






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






12. The state of having a balance between inflowing and outflowing heat-- the temp at every radial point is different but constant






13. The shadow area behind the Earth or Moon where the Sun is completely obscured.






14. The process that powers the sun and hydrogen bombs






15. Mercury and venus






16. The part of the Milky way that has on-going star formation






17. A measure of the force of gravity on an object






18. A particle of light.






19. A spherical shell of comets that orbit the sun at a great distance (roughly two light years from the sun)






20. A word meaning 'the same everywhere throughout.'






21. The class of all objects having high energy radiation coming from their nuclei. Active Galactic Nucleus- Blazars - Quasars - Radio and Emit synchrotron radiation






22. The Greek philosopher responsible for making the stellar magnitude scale.






23. Venus






24. Saturn






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






26. Plate tectonics due to thickness of crust and maintain their general form when they collide-where most volcanoes are.






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






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






29. Mercury - Venus - Earth - Mars






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






31. The mirror that determines the focus configuration of a reflector






32. A representation of the changes in color and brightness of an evolving protostar.






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






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






35. A streak of light in the atmosphere






36. The process similar to conduction by which energy moves from the solar core to the convective layer






37. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






38. A rock or iron specimen that has fallen from space






39. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






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






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






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






43. 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






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






45. The amount of density needed to stop the universe from expanding and to begin the big crunch represented by Pc






46. The ratio of the actual density of the universe to the critical density. (actual density divided by the critical density






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






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






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






50. A younger cluster of stars - found in the galaxy disk