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Paper 2
Waves
Why Each Type of Wave is Used (HT only)
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Created by
Ruby Wain
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Cards (25)
What type of waves are ideal for long distances signals?
Radio waves
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Why are radio waves not absorbed by the air?
They have long
wavelengths
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What safety hazards do radio waves pose?
They
do not pose significant safety hazards
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What are microwaves used for?
Satellite
communications
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How do microwaves differ from radio waves in terms of reflection?
Microwaves are not reflected by the
ionosphere
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What prevents radio waves from reaching satellites?
The
ionosphere
reflects them
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What are microwaves effective for in cooking?
Heating
food
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Why can microwaves be absorbed by water molecules?
Due to their
wavelength
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What type of waves carry heat energy effectively?
Infrared waves
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In what applications are infrared waves used?
Heat detection and
thermal imaging
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What can visible light travel through effectively?
Glass
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How does visible light travel through optical fibers?
By
total internal reflection
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What is the use of ultraviolet waves?
Sterilization
and disinfection
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What do X-rays penetrate effectively?
Most
solid objects
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How do gamma rays differ from X-rays in terms of energy?
Gamma
rays carry
more
energy
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What is a medical application of gamma rays?
Killing
living cells
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How can gamma rays be used in medical equipment?
For
sterilizing
medical equipment
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What is a potential use of gamma rays in cancer treatment?
Targeting
tumor cells
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What do gamma rays do to living cells?
They can
kill
them
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How do gamma rays affect cancer cells?
They can selectively kill
tumor cells
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What is the relationship between wave type and energy?
Higher
frequency
waves carry more energy
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What is the significance of wave absorption in medical applications?
It allows targeted treatment of
tissues
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What type of radiation is used in radiation therapy?
Gamma rays
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Why are X-rays partially absorbed by dense objects?
Due to their high
density
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How do different types of waves interact with human tissues?
They
penetrate
or are
absorbed
differently
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