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. Sudden blasts of gamma radiation from a very distant galaxy caused possibly by a supernova explosion.






2. The location of a supermassive black hole






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






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






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






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






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






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






10. Earth






11. The gap inthe outer portion of Saturn's A ring






12. A change in the wavelength of light caused by a motion between the observer and light (or wave) source (blue shift if getting closer - red shift if moving away)






13. A measure of the seasonal shifting of a star's position against farther stars or galaxies. The closer the star - the greater is the angular distance it shifts. We use it to find distances to stars that are up to 1000 pc away.






14. Dark areas on the sun that are cooler than the surrounding photosphere






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






16. The apparent backward motion of a planet against the background of stars.






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






18. The place in the sky that the Earth's axis points toward (can be either north or south)






19. A star that is in the process of forming. It glows from gravitational contraction






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






21. A small and dim but hot star.






22. When material is heated and moves taking the heat energy with it






23. A telescope that uses lenses to focus light






24. The science of measuring light energy by wavelength.






25. The rotation of a star or planet at different speeds at its equator and poles






26. A crystalline patter found in iron meteorites






27. The point directly overhead.






28. When the Sun moves from south to north across the celestial equator (about March 21)






29. A particle of light.






30. The opaque universe that existed for 300000 years after the Big Bang. (photons outnumbered nuclei by 1 billion to one - so less light)






31. A quantity measuring the stability of the Earth's atmosphere






32. A star that erratically and explosively brightens and dims






33. Centered on the sun.






34. Highlands: rocks are made of lighter anorthosite (similar to old earth rocks) Maria: rocks made of heavy mare basalt (volcanic rock) everywhere else is loose regolith created by meteoric impact.






35. A star that is in the process of forming. It glows from gravitational contraction






36. The high- temperatature outer layer of the sun






37. Sc galaxies






38. 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)






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






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






41. 10 cm -> 1 mm






42. Milky way galaxy is a member - a small poor cluster-about 30 galaxies






43. A spinning neutron star






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






45. The material from which the solar system formed






46. A particle of light






47. Electromagnetic Radiation






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






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






50. 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