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Physics HW

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1.

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2.

WHAT IS ELECTROMAGNETIC?

  • The electromagnetic spectrum is a continuous range of wavelengths.
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3.

WHAT ARE THE TYPES OF ELECTROMAGNETIC RADIATION

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4.

RADIO WAVES

  • Uses- televisions signals
  • Danger-
  • Speed- The speed of radio waves is approximately 185 miles per second, which is also the speed of light.
5.

MICROWAVES

  • Uses- Cooking, mobile phones
  • Danger- cause internal heating of body tissues
  • Speed-
6.

INFRARED

  • Uses- optical fibre communications
  • Danger - is felt as heat and causes skin burns
7.

VISIBLE LIGHT

  • Uses- seeing
8.

ULTRAVIOLATE

  • Uses - detecting forged bank notes
9.

X-RAYS

  • Medical images of bones
  • Danger - damage cells, causing mutations (which may lead to cancer) and cell death
10.

GAMMA RADIATION

  • Uses - killing cancer cell
  • Danger- damage cells, causing mutations (which may lead to cancer) and cell death
  • Speed-

Maha Miah