Waves Flashcards
(19 cards)
Transverse waves
Transverse waves move perpendicular to the direction of the energy
Longitudinal waves
Move parallel to the direction of the energy
wavelength
The distance of an entire oscillation
electromagnetic spectrum
Radio
Microwave
Infrared
Visual light
Ultraviolet
X ray
Gamma rays
( Raging Marsians Invaded Venus Using X ray Guns)
What is the doppler effect
The apparent change in observed wavelength and frequency of a wave emitted by a moving source relative to an observer
What would an observer standing in front of an object moving towards them experience (doppler effect)
The waves appear to get squashed together because the wavelength appears to get shorter and the frequency appears to get higher
What would an observer standing behind of an object moving away from them experience (doppler effect)
The waves appear to get stretched apart because the wavelength appears to get longer and the frequency appears to get lower
All waves in the EM spectrum are
Transverse
Properties of waves at the top of the EM spectrum
Low energy
Long wavelength
low frequency
Properties of waves at the bottom of the EM spectrum
Higher energy
short wavelength
High frequency
Application of radio waves
Radios
communication
Application of microwaves
cooking
satellite transmitions
Application of infrared waves
heaters
night vision equipment
Application of visible light
seeing
optical fibers
photos
Application of ultraviolete light
Fluorescent lamps
Application of X rays
Observing the internal structure of objects and materials
such as humans
Application of Gamma rays
Sterilising food and medical equipment
What is the main danger associated with ultraviolet, X-rays, and gamma rays
ionising atoms,which can damage cells and cause mutations, which can lead to cancer.
units of amplitude
meters
