1. The Electromagnetic Spectrum

2. The Electromagnetic Spectrum
longest wavelength
shortest wavelength
The Electromagnetic Spectrum
The name given to a group of energy waves that are mostly invisible and can travel through empty space
Shorter waves have more energy and longer waves have less energy

3. Characteristics of Radio waves:
longest wavelength
shortest wavelength
Characteristics of Radio waves:
Longest wavelength.
Transmit radio and TV signals.

4. Characteristics of Microwaves:
longest wavelength
shortest wavelength
Characteristics of Microwaves:
Shorter than radio waves.
Absorbed by water molecules.

5. Characteristics of Infrared waves:
longest wavelength
shortest wavelength
Characteristics of Infrared waves:
Shorter wavelength than microwaves.
Felt as heat.
Hot objects give off infrared waves.

6. Characteristics of Visible light:
longest wavelength
shortest wavelength
Characteristics of Visible light:
Shorter wavelength than infrared waves.
Can be seen as colors.
Half of Sun’s rays are visible light.

7. Characteristics of Ultraviolet light:
longest wavelength
shortest wavelength
Characteristics of Ultraviolet light:
Shorter wavelength than visible light.
Give off harmful radiation.
Can kill living cells.
Causes skin cancer.

8. Characteristics of X-ray radiation:
longest wavelength
shortest wavelength
Characteristics of X-ray radiation:
Shorter wavelength than ultraviolet.
Give off harmful radiation.
Pass through skin, not bone.
Harmful to humans.

9. Characteristics of Gamma radiation:
longest wavelength
shortest wavelength
Characteristics of Gamma radiation:
Shortest wavelength (highest energy).
Comes from radioactivity or nuclear reactions.
Give off harmful radiation.
Harmful to humans.