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28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
28.1 Presentation (CP)
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28.1 Presentation (CP)

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  • Transcript

    1. The Sun-Earth-Moon System Chapter 28
    2. Think-Pair-Share • What do astronomers do? • How does astronomy relate to your daily life? • What do you observe in the sky?
    3. Tools of Astronomy SECTION 28.1
    4. Radiation
    5. Radiation • light common term for electromagnetic radiation
    6. Radiation • light common term for electromagnetic radiation • caused by wavelengths and frequencies
    7. Radiation • light common term for electromagnetic radiation • caused by wavelengths and frequencies • wavelength - distance b/w peaks on a wave
    8. Radiation • light common term for electromagnetic radiation • caused by wavelengths and frequencies • wavelength - distance b/w peaks on a wave • frequency - # of waves/oscillations per second
    9. Mathematical Relationship c = λf • c = speed of light (3.0 x 108 m/s) • λ = wavelength (m) • f = frequency (Hz)
    10. Examples
    11. Examples • f = 108 Hz λ=?
    12. Examples • f = 108 Hz λ=? • If light has a wavelength is 10-10 m, what is the frequency of its wave.
    13. Telescopes
    14. Telescopes • BENEFITS:
    15. Telescopes • BENEFITS: • ability to attach different detectors to observe all wavelengths
    16. Telescopes • BENEFITS: • ability to attach different detectors to observe all wavelengths • brings much more light to focus than human eye
    17. Telescopes • BENEFITS: • ability to attach different detectors to observe all wavelengths • brings much more light to focus than human eye • allows astronomers to use specialized equipment
    18. Telescopes • BENEFITS: • ability to attach different detectors to observe all wavelengths • brings much more light to focus than human eye • allows astronomers to use specialized equipment • can be used to make time exposures w/ aid of cameras or other imaging devices
    19. Types of Telescopes
    20. Types of Telescopes • 2 types used to focus visible light:
    21. Types of Telescopes • 2 types used to focus visible light: • refracting
    22. Types of Telescopes • 2 types used to focus visible light: • refracting • reflecting
    23. Types of Telescopes • 2 types used to focus visible light: • refracting • reflecting • majority used
    24. Types of Telescopes • 2 types used to focus visible light: • refracting • reflecting • majority used • most located @ observatories @ high elevations
    25. Refracting Telescope • refracting telescope - uses lenses to bring visible light to a focus
    26. Reflecting Telescope • reflecting telescope - uses mirrors to bring visible light to a focus
    27. Telescopes cont...
    28. Telescopes cont... • interferometry - process of linking separate telescopes together so they act as one telescope
    29. Telescopes cont... • interferometry - process of linking separate telescopes together so they act as one telescope • detailed image improves as distance b/w telescope increases
    30. Satellites
    31. Satellites • sent into space to collect information
    32. Satellites • sent into space to collect information • b/c earth’s atmosphere blocks infrared and ultraviolet radiation, x-rays, and gamma rays
    33. Satellites • sent into space to collect information • b/c earth’s atmosphere blocks infrared and ultraviolet radiation, x-rays, and gamma rays • to obtain close up observations
    34. Satellites • sent into space to collect information • b/c earth’s atmosphere blocks infrared and ultraviolet radiation, x-rays, and gamma rays • to obtain close up observations • obtain samples from nearby objects
    35. Satellite
    36. Hubble Space Telescope
    37. Hubble Space Telescope • one of best-known space observatories
    38. Hubble Space Telescope • one of best-known space observatories • designed to obtain sharp, visible images w/ out atmospheric interference and make observations in infrared and ultraviolet wavelengths
    39. Hubble Telescope
    40. Spacecraft
    41. Spacecraft • robotic probes make close-up observations and sometimes land to collect information
    42. Spacecraft • robotic probes make close-up observations and sometimes land to collect information • practical only for objects in our solar system
    43. Human Space-Flight
    44. Human Space-Flight • space shuttle program provides environment for scientists to study effects of space
    45. Human Space-Flight • space shuttle program provides environment for scientists to study effects of space • long-term effects studied in space stations
    46. Human Space-Flight • space shuttle program provides environment for scientists to study effects of space • long-term effects studied in space stations • International Space Station
    47. I.S.S.
    48. Spinoffs
    49. Spinoffs • spinoffs - NASA technology that has been passed to commercial industries for common use
    50. Spinoffs • spinoffs - NASA technology that has been passed to commercial industries for common use • cordless tools
    51. Spinoffs • spinoffs - NASA technology that has been passed to commercial industries for common use • cordless tools • pumps in artificial hearts

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