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 change in the appearance of the sun at the edge of the solar disk






2. Long - meandering cliff formed when a planet surface cools and shrinks






3. The displacement of spectral lines to redder colors caused by the expansion of the universe.






4. Earth






5. A fusion process in which protons build together to form helium






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






7. 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






8. A point in the sky where meteors appear to come from during a shower






9. An energetic event taking place in the early universe






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






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






12. 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.






13. Mercury






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






15. The entity responsible for spiral arms in grand-design spiral galaxies






16. Finding a star's absolute magnitude from it's placement on an HR diagram. After finding the absolute magnitude - we measure the apparent magnitude - for a distance modulus and use this to find the distance. This method is good for finding distances t






17. The dark - relativley smooth areas on the moon; Latin for sea






18. The dark - relativley smooth areas on the moon; Latin for sea






19. The source of the force that is accelerating the expansion rate of the universe.






20. The 'edge' of the universe. Light beyond this has not reached us yet.






21. The temp at which a substance in the vacuum of space solidifies






22. A star that has become a red giant for the second and final time. It is burning helium to carbon in a shell surrounding the core






23. A telescope that uses mirrors to focus light






24. What Ole Roemer used to measure the speed of light in a vacuum






25. Earth






26. The entity from which the whole universe is postulated to have come from.






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






28. The number of protons in an atom.






29. 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






30. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






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






32. A star that blows itself apart






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






34. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






35. The science of measuring light energy by wavelength.






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






37. 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.






38. The particle horizon is the farthest we can see. It exists because the universe had a beginning and thus a definite age. Light from distances farther away from the particle horizon have not had time to reach us yet.






39. Material that shoots rapidly out into space. Flares cause Auroras






40. A toroidal or donut-shaped collection of material attracted to a central body like a star or black hole. Dust around an object






41. A perfect absorber and radiator of electromagnetic radiation.






42. Ancient stream channels - flood planes - and sedimentary-type rock. Frozen water is found in the polar ice caps and in the soil.






43. Where is the center of the expansion






44. The dimming of starlight by intervening dust






45. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






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






47. When particles are compressed to an unnatural state where their pressure is not related to their temperature






48. When one side of a body always faces the planet it revolves around






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






50. Hot cells of gas that rise and fall in the hotosphere