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. When a planet lines up with the sun inthe sky






2. A galaxy sending out a stream of material from its nucleus






3. The philosophical stand that says a simpler explanation is more likely to be correct than a complicated one.

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4. A telescope that uses mirrors to focus light






5. The point directly overhead.






6. 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






7. Arcs of increased mass concentration that slow stars and gas down as they orbit through which cause the formation of stars.






8. A point in the sky where meteors appear to come from during a shower






9. What causes the zones and belts on jupiter and saturn?






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






11. Small compact stars called white dwarfs can have material deposited on their surfaces. In time material heats up and explodes in surface nuclear reaction- star brightens - settles - repeats.






12. A crystalline patter found in iron meteorites






13. A phenomenon seen when the Earth passes through the orbit of a burned out comet






14. Population 1- similar to the sun and 2% of elements are metal - Population 2- formed before gas was metal- only a fraction of mass is metal.






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






16. The oldest grouping of stars - found in the galaxy halo






17. As open clusters age - they push gas away but dust remains this can reflect light giving the cluster a blue-ish color. also called reflection nebula






18. The mirror that gathers the light in a reflector






19. A term referring to Earth-like planets






20. Star speed at outer edge of galaxy should begin to diminish - but they dont so we guess that this means there is increasing force (aka dark matter)






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

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






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






24. 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.






25. Sc galaxies where star formation and destruction is so rapid that supernova explosions are mainly responsible for compressing gas to create new stars.






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






27. A term referring to Jupiter-like planets






28. Mercury






29. The 11 or 22 period on the sun durin which sunspots increase - decrease - change polarity - increase and decrease again.






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






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






32. 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)






33. Jupiter






34. Matter that reveals itself only through its gravitational attraction






35. Latin for 'cloud'. A word used to describe the collections of gas and dust in the Milky Way and other galaxies






36. The process of acquiring material






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






38. The rotation period of the Earth measured relative to the stars.






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






40. 1 mm 1μm






41. The dimming of starlight by intervening dust






42. The wavelengths where a specific element can absorb or emit light.






43. The oldest terrain on the moon






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






45. Earth






46. The apparent path of the Sun through the stars on the celestial sphere.






47. The law that syas light energy from a blackbody increases as (temperature^4)






48. Consists of old red stars in slow orbits that plunge through disk and bulge. about 1% are old - round globular clusters.






49. The nuclei of very distant galaxies. Likely a manifestation of supermassive black holes






50. Orbit in Jupiters orbit