Waves And Light Flashcards
(48 cards)
Medium
Material through which a wave travels
Wave
Disturbance that transfers energy from one place to another
Longitudinal wave
Particles that move back and forth in the same direction that waves travel ; parallel to the waves
Transverse wave
Particles move perpendicular to the direction the wave travels
Mechanical wave
Waves that require a medium
Electromagnetic waves
Distribution in the electric magnetic field
Amplitude
How far particles in the medium move away from their normal rest position
Wave length
Is the disturbance which the waves shape repeats
Wave period
Is the time required for one cycle
Frequency
Tells how many cycles occur in a n amount of time
Hertz
Frequency is measured in this
Wave fronts
The peaks can be drawn as shapes
Wave speed
The speed in which a wave travels
transparent
Matter that transmit light
Translucent
Materials transmit light but do not let light travel straight through
Opaque
Materials don’t let light pass through them
Absorption
Transfer of the light energy to matter
Reflection
The bouncing of light off a surface
Refraction
A change in direction of a wave as it passes from one medium into an angle
Scattering
Occurs when light is sent through a medium
Radiation
Is The transfer of energy as em waves
Electromagnetic spectrum
Visible light only a very small visible
Infrared
Light has lightly stronger wave lengths
Ultraviolet
Light has lightly shorter lengths
