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 how an object resists accelerating when acted upon by a force. It is proportional the amount of matter in an object






2. The process responsible for creating the arms of flocculent spiral galaxies






3. Disk dust grains are made of all the elements that are not in gaseous form in space which blocks starlight and causes interstellar extinction






4. A spread of light with an uninterrupted wavelength distribution of energy.






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






6. Jupiter






7. A plot of star absolute magnitude verses spectral type.






8. A nearby galaxy with a quasar-like nucleus. closer but less bright than quasars-weaker






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






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






11. Ganymede and Titan






12. A push or a pull






13. 1 mm 1μm






14. 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






15. Venus (retrograde)






16. The lowest energy of an atom.






17. Mercury and venus






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






19. A streak of light in the atmosphere






20. The lens that gathers the light in a refractor






21. 1 mm 1μm






22. We can infer the absolute magnitude of pulsating variable stars by measuring their pulsation periods. The longer the pulsations - the greater their luminosities. We then again measure their apparent magnitudes - compare it with their absolute magnitu






23. Ganymede and Titan






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






25. The point in its orbit where a planet is nearest the sun






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






27. The rate of expansion of the universe.






28. The rock that makes up the lunar highlands






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






30. 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






31. A telescope that uses mirrors to focus light






32. Moon in less than the angular diameter of the Sun.






33. A prominence seen against the disk of the sun






34. In Ptolemy's geocentric solar system - the small circle on which a planet moved.






35. The surface of the sun






36. The process responsible for creating the arms of flocculent spiral galaxies






37. The apparent magnitude a star would have if it were at a distance of 10 parsecs.






38. Elliptical orbits that come inside orbit of the Earth.






39. Mercury






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






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






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






43. 30AU to 50Au from sun - consists of ancietn premordial objects made of frozen ice and dust-35000 objects or more that are larger than 100 km in diameter and many more smaller than this






44. The average distance between the Earth and the Sun (=1.5 x10^8km)






45. The law that predicts the possible types of spectra.

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46. 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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47. A faint - remarkably uniform distribution of radiation in space






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






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






50. Form honeycomb like patterns surrounding empty or nearly empty voids.