Waves Flashcards
What is a longitudinal wave
A wave that vibrates parallel to the direction of energy transfer.
What is a transverse wave
A wave that vibrates (oscillates) perpendicular to the direction of energy transer.
What is a scalar
A scalar has magnitude
What is a vector
A vector has direction and magnitude
Name 5 scalars
Energy
Speed
Distance
Mass
Time
Name 5 vectors
Force
Velocity
Displacement
Acceleration
Momentum
Name 4 longitudinal waves
Sound waves
Ultrasound waves
Seismic waves
Pressure waves
Name 3 transverse waves
Water waves
Vibrations
Electromagnetic waves
What is the electromagnetic spectrum
Transverse waves
Can travel though a vacuum
Spectrum of waves
Name the waves on the electromagnetic spectrum
Radio Waves
Microwaves
Infared
Visible
Ultraviolet
X - Rays
Gamma Rays
Red Men Invaded Venus Using X-RAY Guns
What is a mneumonic used to remember the electromagnetic spectrum
Red Men Invaded Venus Using X-ray Guns
Does a gamma ray have a short or long wavelength
Short
Does a radio wave have a low or high frequency
Low
Name the wave used for communication
Radio waves
Uses of radio waves
Broadcasting and communications
Uses and dangers of microwaves
Cooking and satellite transmissions
Internal heating of body tissues (damage, burns etc)
Uses and dangers of infrared
Heaters and night vision
Skin burns
Uses of visible light
Optical fibres, photography, human sight
Uses and dangers of ultraviolet
Fluorescent lamps, tanning beds
Damage to skin cells, blindness, skin cancer
Uses of x - rays
Observing internal structures of objects and materials, including the body for medical purposes
Uses and dangers of gamma rays
Sterilising food equipment and medical equipment
Cancer, mutations
Protective measures from electromagnetic spectrum
Shortening exposure time and standing behind or using lead lined equipment
