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






2. Originially thought to be stars emitting radio radiation but are now concluded to be nuclei of distant galaxies (same as radio galaxies aka emit streams of material)






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






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






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






6. Loops that trace the magnetic field as it erupts from a sunspot area and arches over to an adjacent area. They glow in the light of gas pouring out of corona and falling into photosphere.






7. 1-orbit aroudn the sun 2- are in hydrostatic equilibrium and 'mostly round' 3- have not cleared debris around its orbit 4- are not satellites






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






9. The era when the ratio of matter to energy greatly favored matter. (verses radiation dominated universe where it was opaque. Matter is now dominated by gravity not photons)






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






11. A force exerted by reflecting sunlight






12. 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.






13. The final end state of an intermediate to high mass star. An entity in which all the electrons have been pushed into the protons.






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






15. Poitns of gravitational stability in the orbit of a planet






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






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






18. A large - irregularly shaped rocky object orbiting the sun mostly between mars and jupiter. Left-over planetesimals






19. A star that is burning hydrogen to helium in a shell surrounding it's core






20. Formed rapidly - collapsed slower into disk shape - star birth rate is low but lasts longer and ongoing - contain higher mass blue stars.






21. Radiation (possibly left over from the big bang) that fills the universe. Perfect black body spectrum and tells us a bit aout how galaxies are formed.






22. The area behind a lens where images are resolved






23. Venus (retrograde)






24. A term referring to Jupiter-like planets






25. Approximate speed of light in a vacuum






26. How did Earth come to have an oxygen rich atmosphere?






27. Jupiter






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






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






30. The state of having a balance between inward and outard pressures in a gas--the inward force from gravity is balanced by the outward force from heat.






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






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






33. 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






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






35. The line on an H-are diagram going from upper left to lower right where normal stars of different masses reside.






36. Venus (retrograde)






37. A collection of comets in the plane of the solar system - located beyond the orbit of Pluto






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






39. The gap etween saturn's A and B rings






40. 1μm 100 nm






41. The fate of the universe if it is closed. The universe expanding as much as possible and then retracting






42. 100 nm 10 nm






43. Dark - reddish - low-pressure bands in Jupiter's atmosphere






44. The time when the universe cooled sufficiently for atoms to exist. radiation dominated= first 300000 years - THEN era of recombination turns into matter dominated for next.






45. The point where an inferior planet is as far away from the sun as it can be (as seen from the Earth)






46. Orbit in Jupiters orbit






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






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






49. 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.






50. In a CLOSED UNIVERSE - the curvature of space-time is _________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.