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Radiation Reveals the Secrets of the Universe (Infrared (Benefits (Thermal…
Radiation Reveals the Secrets of the Universe
X-ray
What size is it?
The same size as an atom
It can pass through soft tissue
It can't pass through hand tissue like the teeth and bones
If a tooth is soft (cavity) or cracked, it can pass through
Second shortest wavelength after gamma
Dangers
Radiation exposure
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Benefits
Helps doctors identify injury or disease
Helps doctors
Ultraviolet
Mostly comes from the Sun
Dangers
If you're exposed to UV for too long, your risk of skin cancer increases
Can damage the eyes
Benefits
Produces Vitamin D
Is used to help crime investigations
Kills bacteria
What size is it?
The same size as a molecule
Third shortest wavelength after x-ray
Gamma
Dangers
Can destroy your DNA
Can damage your cells
Most dangerous type of radiation
What size is it?
The same size as the nucleus of an atom
Small enough to get inside of you
Shortest wavelength
Benefits
Helps doctors
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They can avoid difficult surgeries
Can kill cancer cells
Visible Light
Can be seen by the human eye
It is seen as color
Plants absorb visible light
Plants use visible light for photosynthesis
They don't like green light
They reflect green light and that's why most plants look green
What size is it?
The same size as bacteria
Fourth shortest wavelength after UV
Infrared
Is invisible to the human eye
Dangers
It can burn you
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Benefits
Thermal imaging
Night vision
Remote controls
Helps us see objects in space
What size is it?
The same size as a hair
Fifth shortest wavelength after visible light
Can be detected by your skin
Is detected as heat
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Microwave
Benefits
Wifi
Bluetooth
Cell phones
Navigation
Radar
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Astronomy
Heating
Dangers
Can heat body tissue
Burns
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What size is it?
The same size as a baseball
Sixth shortest wavelength after infrared
Radio
What size is it?
The same size as a football field
Longest wavelength
How is it generated
Lightning
Objects in space
Benefits
Broadcasting
Satellites
Communications
Radar
Dangers
Tissue damage
Burns
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Doppler Effect
What is it?
Whenever the source of a wave is moving towards or away
Sound
Towards
The pitch goes up
Away
The pitch goes down
Light
Towards
Waves shift from red to blue
Blue shift
Away
Waves shift from blue to red
Red shift