1. The Electromagnetic Spectrum (EMS)
Notes
Entry 4

2. The Electromagnetic Spectrum (EMS)
EMS- name for the range of waves when placed in order of increasing frequency.

3. Mnemonic Device for the order...
Respucia’s =Radio
Mom =Micro
Is =Infrared
Very =Visible Light
Ugly =Ultraviolet
Xcept when =X-rays
Giggling =Gamma Rays

4. Radio Waves (LLL) Long Wavelength, Low Freq, Low Nrg. Radio signal
TV signal

5. Micro Waves
Microwave Ovens
Cell Phones
Radar
MRI

6. Infrared Waves Energy is felt as heat.
Toaster, Stove top, Hair Dryers. Used in cameras/scopes for night vision.

7. Visible Light
ROY G BIV= Red, orange, yellow, green, blue, violet

8. Ultraviolet Kills bacteria in hospitals.
Makes Vitamin D in the body= strong bones and teeth.
Too much = skin cancer and damage eyes.

9. X-rays Pass through human tissue to take photos of bones.
Dark areas show cracks or cavities.

10. Gamma Rays (HHS) High Nrg, High Freq. Short wavelength.
Can go through objects the easiest of all waves.
Treatment for cancer
Too much=serious illness