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






2. A method of finding a star's distance from its absolute magnitude and spectral type or color.






3. A measure of the force of gravity on an object






4. Young clusters in disk are irregularly shaped since they have no time to relax into the rounder relaxed shape of globular clusters-will constantly be torn apart and assimilated.






5. That which is responsible for Jupiter's magnetic field






6. In a FLAT UNIVERSE(our universe) - the curvature of space-time is ________. Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is _____.






7. The shadow area behind the Earth or Moon where the Sun is completely obscured.






8. A bridge of material held in position above the solar surface. They can remain for hours even days






9. The high- temperatature outer layer of the sun






10. 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






11. A faint - remarkably uniform distribution of radiation in space






12. Mercury






13. Light scattered through the atmosphere that degrades astronomical images






14. Dying large-mass stars lose their outer layers in a violent explosion creating large - chaotic remnants. these brighten like nova but are so much brighter and only occur ONCE PER STAR






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






16. The projection of the Earth's equator onto the celestial sphere.






17. A logarithmically scaled value for the measured brightness of a star.






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






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






20. 1 mm 1μm






21. When massive objects bend space and time enough to create multiple images of an object located behind them






22. The rotation period of the Earth measured relative to the Sun.






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






24. In an OPEN UNIVERSE - the curvature of space-time is ____ - Parallel beams will converge/diverge/remain parallel (circle one). The density parameter - Ω0 - is____.






25. Heavier elements such as iron - silicon - magnesium - sulfer - nickel






26. 1. We see rapid movements or high energy radiation coming at some level from the nuclei of nearly every galaxy we have looked at. 2. We suspect that the creation of these supermassive black holes is part of the galaxy formation process.






27. Small bulges - loosely wound - massive arms - arms have many H2 regions and look very lumpy






28. 10 nm 10^2 nm






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






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






31. 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.






32. Ganymede






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






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






35. Venus






36. What do we think the actual fate of the universe will be and why do we think this?






37. Is there water on the moon?






38. A representation of the changes in color and brightness of an evolving protostar.






39. Theory virtually demands that the geometry of the universe be ______. Results of measuring lumps in the cosmic background radiation indicate that the universe geometry is ________.






40. The equation that describes how matter equates with energy






41. Europa






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






43. A telescope that uses lenses to focus light






44. A measure of the force of gravity on an object






45. The north-south line passing directly overhead through the zenith.






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






47. The temp at which a substance in the vacuum of space solidifies






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






49. 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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50. In what chemical form are jupiters nitrogen - carbon and oxygen?