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Understanding Electromagnetic Radiation: Types and Characteristics

Electromagnetic (EM) radiation consists of transverse waves generated by moving electrically charged particles and travels at a speed of approximately 300,000,000 m/s in a vacuum. The EM spectrum encompasses various types of radiation, each with distinct energy levels: radiowaves (lowest energy), infrared radiation (can increase thermal energy), visible light (the colors ROY.G.BIV), ultraviolet radiation (causing skin damage), X-rays (penetrate soft tissue), and gamma rays (highest energy for medical applications). Understanding these forms illuminates their applications and impacts.

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Understanding Electromagnetic Radiation: Types and Characteristics

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    4. Light I. Electromagnetic Radiation (p.530) EM Radiation EM Spectrum Types of EM Radiation

    5. A. EM Radiation Electromagnetic Radiation transverse waves produced by the motion of electrically charged particles does not require a medium speed in a vacuum = 300,000,000 m/s

    6. B. EM Spectrum

    7. C. Types of EM Radiation Radiowaves lowest energy EM radiation

    8. C. Types of EM Radiation Radiowaves FM - frequency modulation AM - amplitude modulation

    9. C. Types of EM Radiation Infrared Radiation (IR) slightly lower energy than visible light can raise the thermal energy of objects thermogram - image made by detecting IR radiation

    10. C. Types of EM Radiation Visible Light small part of the spectrum we can see ROY G. BIV - colors in order of increasing energy

    11. C. Types of EM Radiation Ultraviolet Radiation (UV) slightly higher energy than visible light Types: UVA - tanning, wrinkles UVB - sunburn, cancer UVC - most harmful, sterilization

    12. C. Types of EM Radiation Ultraviolet Radiation (UV) Ozone layer depletion = UV exposure!

    13. C. Types of EM Radiation X rays higher energy than UV can penetrate soft tissue, but not bones

    14. C. Types of EM Radiation Gamma rays highest energy EM radiation emitted by radioactive atoms used to kill cancerous cells

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