Electromagnetic Energy in Remote Sensing
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Questions and Answers

What is a key characteristic of electromagnetic energy related to its wave nature?

  • Speed of light travel
  • Quantization in discrete packets
  • Ability to undergo interference and diffraction (correct)
  • Constant speed for all wavelengths

    • Which property defines the speed at which electromagnetic waves travel?

  • Wave nature
  • Quantization
  • Spectrum
  • Constant speed for all wavelengths (correct)

    • What is quantized in discrete packets in electromagnetic energy?

  • Speed of light
  • Frequency
  • Energy (correct)
  • Wave nature

    • How does the energy of a photon relate to its frequency in electromagnetic energy?

    <p>Energy is directly proportional to frequency</p> Signup and view all the answers

    Which of the following is NOT part of the electromagnetic spectrum?

    <p>Sound waves</p> Signup and view all the answers

    What are the key components of electromagnetic waves that oscillate perpendicular to each other and to the direction of propagation?

    <p>Electric and magnetic fields</p> Signup and view all the answers

    What is the range of wavelengths that can be detected by the human eye?

    <p>380 to 750 nanometers</p> Signup and view all the answers

    Which type of radiation is often associated with sunburn and sterilization?

    <p>Ultraviolet (UV)</p> Signup and view all the answers

    What is a key application of X-rays mentioned in the text?

    <p>Medical imaging</p> Signup and view all the answers

    Which type of radiation is often associated with nuclear processes?

    <p>Gamma rays</p> Signup and view all the answers

    Why is understanding the electromagnetic spectrum crucial in various scientific and technological fields?

    <p>To gain unique capabilities for specific applications</p> Signup and view all the answers

    What is black body radiation referred to in terms of emitted electromagnetic radiation?

    <p>Radiation emitted by a perfect black body</p> Signup and view all the answers

    What is the main focus of Snell's Law?

    <p>Explaining wave propagation through different media</p> Signup and view all the answers

    According to Huygens' Principle, what serves as a source of secondary spherical wavelets?

    <p>Constant points on a wavefront</p> Signup and view all the answers

    What does Faraday's Law of Electromagnetic Induction describe?

    <p>The induction of voltage due to a changing magnetic field</p> Signup and view all the answers

    How does the Lorentz Force Law describe the force experienced by a charged particle?

    <p>Incorporating both electric and magnetic forces</p> Signup and view all the answers

    Remote sensing atmospheric effects refer to which interactions?

    <p>Interactions between Earth's atmosphere and radiation during sensing</p> Signup and view all the answers

    Which of the following accurately describes the purpose of Huygens' Principle?

    <p>Explaining wave propagation using secondary wavelets</p> Signup and view all the answers

    What is the purpose of GOES satellites in geostationary orbit?

    <p>Continuous monitoring of weather patterns and environmental events over specific regions</p> Signup and view all the answers

    At what altitude do Aqua and Terra satellites operate?

    <p>705 kilometers</p> Signup and view all the answers

    What is the purpose of the Hubble Space Telescope in low Earth orbit?

    <p>Observes distant celestial objects across various wavelengths</p> Signup and view all the answers

    What is the function of GPS satellites in medium Earth orbit?

    <p>Providing precise location and timing information for navigation</p> Signup and view all the answers

    Where does the International Space Station (ISS) orbit?

    <p>Approximately 420 kilometers above Earth</p> Signup and view all the answers

    What type of data do MODIS instruments on Aqua and Terra satellites provide?

    <p>Global data for climate studies, land cover monitoring, and atmospheric observations</p> Signup and view all the answers

    When was the IRS-1B satellite, part of the IRS-2 series, launched?

    <p>August 29, 1991</p> Signup and view all the answers

    What was the main purpose of the IRS-P3 satellite launched on March 21, 1996?

    <p>Resource monitoring</p> Signup and view all the answers

    Which satellite marked the beginning of India's Earth observation program?

    <p>IRS-1</p> Signup and view all the answers

    What distinguishes the Cartosat satellites in terms of their purpose?

    <p>High-resolution cartographic applications</p> Signup and view all the answers

    When was the Resourcesat-1 satellite launched?

    <p>April 17, 2003</p> Signup and view all the answers

    What feature distinguishes the IRS-3 series from its predecessors?

    <p>Enhanced sensors for higher resolution imaging</p> Signup and view all the answers

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