Intergrated science 3 test

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Intergrated science 3 test
2012-12-11 15:31:38

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  1. What are the various types of electromagnetic radiation?
    Gamma Rays, X-Rays, Ultraviolet light, visible light, infared radeation, microwaves, and radio waves
  2. What do spectral lines show
    Spectral lines identify the elements present and the star's chemical composition
  3. What is the doppler effect used to determine
    It is used to determine whether or not a star or other body in space is moving away or towards earth
  4. Electromagnetic spectrum
    The arrangment of light waves according to their wavelegnth and frequencies
  5. Photon
    Small particles of light that exert force
  6. Spectroscopy
    The study of the properties of light that depent on wavelegnth
  7. Continuous Spectrum
    An uninterupted band of color
  8. Absorption Spectrum
    When visible light is passed through a relativley cool gas under low pressure, where some of teh colors are observed
  9. Emission spectrum
    Produced by hot gas under low pressure, series of bright lines of particular wavelegnths. Each element or compond in its gaseous form produces a unique set of spectral lines
  10. Doppler Effect
    The perceived change in wavelegnth of a wave taht is emitted from a souce that is moving away or towards an object.

    • Towards: waves are squished, appearing bluer
    • Away: waves are stretched, appearing redder
  11. Name the four parts of the sun
    The solar interior, the visible surface/photosphere, two atmosphering layers (chromosphere and corona)
  12. Why do sunspots appear dark
    They are a lot colder than the surronding solar surface
  13. What are prominences
    Promeninces are ionized gases trapped by magnetic fields that extend from regions of intense solar activity
  14. What form of energy do solar flares release
    Unltraviolet redio and xray
  15. What happens in nuclear fusion
    Elements are fused together. Some energy is released because some matter is converted into energy
  16. Photosphere
    Layer that radiates most of the sunlight we see, the "surface"
  17. Chromosphere
    Above the photosphere, not visible., produces an emission spectrum reverse of absorption spectrum of photosphere
  18. Corona
    The outermost portion of the solar atmosphere, very weak.
  19. Solar Wind
    Stream of particles  and proton s and electrons taht travel outward through the solar system
  20. Sunspots
    Dark regions on the surface of the photosphere
  21. Prominence
    Cloudlike structures consisting of chromospheric gases. Ionized gasses trapped by magnetic feilds
  22. Solar flares
    breif outbusts of energy at a sunspot clustre releasing unltraviolet radio and xray radiation. Fast moving atomic particles are ejected
  23. What does a prism do
    Seperates the visible light into may colors by bending each wavelegnth at a different angle
  24. What color has the longest wavelegnth
  25. Star's spectrum can tell astronomers ..?
    the stars chemical composition
  26. Which type of spectrum does the radiation from most stars produce
    Absorption spectrum
  27. What does the use of doppler effect tell astronomeers about a star
    Whether a star is moving away or towards Eart
  28. What spectrum does an incandescent lightbulb producse
    Continuous spctrum
  29. What happens at the core of the star
    Nuclear fusion
  30. Streams of electrons and protons that shoot out from the sun's corona are the solar....?
  31. Sunspots appear darker on the sun's surfaace because
    They are coler than the rest of teh surface
  32. What is the effect of solar flares on earth
    Creates auoras
  33. When the sun produces energy, it consoumes hydrogen and produces
  34. The sun can countinue to exist in its present stable state for another 
    5.5 billion years
  35. why is an understanding of light importatnt to astronomers
    Almost everything we know about the univesre is about light
  36. The arrangment of electromagnetic waves is called the
    alectromagnetic spectrum
  37. THe nature of light
    Particles and waves
  38. Particle of lights are called
  39. how are frequency and wavelegnth related
    shorter wave higher frequency
  40. Electromagnetic radiation travels at the speed of
  41. WHo was the first astronomer to have used telescopes for asttronomical obsercations
  42. The grainy appearance of the sun's surface is due to moving columns of gas called
  43. the halo like area around the sun's disk that is visible during a solar eclipse is the
  44. ENergy is transmetted inside the sun through
    Convection and radiation
  45. The sun's atmospher consists of the corona and the 
  46. The number of sunspots increases and decreases in a cycle of
    11 years
  47. The sun's energy is created in the area in and around its
  48. Spectroscopy is the study of the properties of light taht depend on
  49. When a wave source ismoving toward or away from an object, the wavelegnth changes, a phenomenon knowh as the
    doppler effect
  50. HOw do astronomers determine whether stars are moving towards or wau from earth
    Doppler Effect/REd-blue shift