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






2. A star without enough mass to begin hydrogen fusion






3. Any change in the speed or direction of an object's motion






4. The rock that makes up the lunar maria






5. Sc galaxies






6. Very center of galaxy. suggestion of a black hole






7. A star that blows itself apart






8. The light produced when particles from the sun collide with atmospheric molecules






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






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






11. 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)






12. The science of measuring the apparent magnitudes of stars by imaging them through different filters.






13. Sa - Sb galaxies where two magnificent arms wind their way from nucleus out in a symmetrical manner.






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






15. The location in the Milky Way where stars orbit like a solid wheel






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






17. The point directly overhead.






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






19. Radiation given off by electrons accelerating in a magnetic field






20. 1μm 100 nm






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






22. The process of acquiring material






23. Either Io -Europa - Ganymede - or Callisto






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






25. An efficient - two-dimensional electronic light detector. Common in digital cameras - they revolutionized astronomical imaging






26. A large and bright but cool star.






27. The location around an atom where an electron resides.






28. The rock that makes up the lunar highlands






29. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






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






31. Why does the earth have few craters while the moon has many?






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






33. What are the three possible geometries of the universe?






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






35. The lowest energy of an atom.






36. The imaginary sphere centered on the Earth that hols the stars.






37. The lowest energy of an atom.






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






39. Venus






40. Very center of galaxy. suggestion of a black hole






41. A cloud of ionized hydrogen. Formed when young stars heat the surrounding gas






42. A location on an H-are Diagram where evolving stars pulsate






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






44. In Ptolemy's geocentric solar system - the large circle on which a planet's epicycle moved around the Earth.






45. Mercury and venus






46. Comglomerates of ice and rock that orbit the sun in highly elliptical paths






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






48. The lens that gathers the light in a refractor






49. The law that describes the blackbody curve - and let to quantum mechanics.


50. The relation that tells how light dims with distance.






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