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 family of radiant energy that includes light as a subset






2. 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






3. The high- temperatature outer layer of the sun






4. 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






5. 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)






6. Radiation emitted when charged particles spiral rapidly in a magnetic field. come off of jets from black holes.






7. Massive compact halo objects (MACHO) - weakly interacting massive particles (WIMPY's)






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






9. Why do Galaxies move very rapidly in the interiors of the dense clusters?






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






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






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






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






14. Saying that the sky should not get dark at night because all lines of sight end on a star meaning that the night sky should be ablaze BUT the big bang - because the universe had a beginning - says that the sky gets dark because out in space - galaxie

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15. A high-pressure bulge in Neptune's southern hemisphere






16. The final end state of a high mass star. .An entity for which gravity has completely overwhelmed all other forces of nature.






17. Atmosphere blocks high energy wavelengths - atmosphere blurs optical radiation - atmosphere absorbs some radiation at all wavelengths even when it gets through.






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






19. The mirror that gathers the light in a reflector






20. Ganymede






21. The Big Bang was not an explosion of matter into empty space - like the explosion of a bomb. Instead - it was an emergence of space and time filled with pure energy where before none of this was present. The point from which is emerged is called the






22. Venus (retrograde)






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






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






25. A prominence seen against the disk of the sun






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






27. Matter so dense that even light cannot escape its gravity






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






29. 10 cm -> 1 mm






30. 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)






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






32. IO






33. Wave- only waves cause an interference pattern when passing through a double slit - particle- only particles deposit energy at specific locations (the way an image builds up on digital camera)






34. The distance a moon can be from a planet before shattering from tidal forces






35. A measure of the ability of a telescope to see fine detail






36. The distance between a lens and its focal plane






37. The amount an image is enlarged by a telescope






38. The telescope configuration that has the focus placed at the back of the primary mirror






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






40. The layer of the sun just above the photosphere






41. A star without enough mass to begin hydrogen fusion






42. 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.






43. Venus






44. When the Sun is farthest north of the celestial equator (about June 22)






45. A star that blows itself apart






46. The first rock-sized bodies that formed in the solar nebula from dust grains






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






48. 10^2 nm 10^7 nm






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






50. A particle of light.