Section 9.1
The bottom of a wave pattern.
What is trough or valley?
This categorization of wave does need a medium to propagate.
What is a mechanical wave?
This wave interaction has an incident ray, a normal line (which is a line perpendicular to the reflective surface), and a reflected ray. This wave interaction also has a law that states "The angle of incidence equals the angle of reflection".
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What is reflection?
This CDA staff member unintentionally spiked a duck.
Who is Mrs. Goodnough?
The top of a wave pattern.
What is a crest or peak?
This categorization of waves does not need a medium to propagate.
What is an electromagnetic wave?
All waves do this type of wave interaction, but we notice it best with light waves. When light enters a new medium (typically plastic, prism, glass, or water), it changes speed instantly. This change of speed causes the light to change direction, or...
What is refract(ion)?
This CDA staff member has studied taekwondo, karate, judoka, jujitsu and kung fu.
Who is Mrs. Gallaway?
The distance between Crest and crest or trough and trough of a wave, as relates to time.
What is a period?
This categorization of waves are mainly represented by waves on water. A floating object on water moves in this pattern as the waves pass by underneath.
What is a circular wave?
This type of wave interaction occurs when a wave bends around the corner or some obstruction. And example is when a persons voice can be heard around the edge of a barrier, like from a hallway into a room.
What is diffraction?
This CDA staff member was interrogated by the FBI in the principal's office while in high school.
Who is Mr. Johnston/Pastor Brandon?
The distance from either the crest or trough of a wave, to the mid point.
What is amplitude?
In this categorization of waves, the oscillation motion causing the wave is parallel to the direction of propagation. Sound waves are an example.
What is a longitudinal wave?
This wave interaction can be constructive or destructive. The interaction is produced when two waves arrive at the same place at the same time. It the waves arrive in phase (constructive), the wave amplitudes add to produce a wave of greater amplitude. If the waves arrive our of phase (destructive) the waves cancel out.
What is interference?
This CDA staff member didn't learn to swim until they were in college.
Who is Mrs. Palmer?
The distance between Crest and crest or trough and trough of a wave as it relates to distance.
What is a wavelength?
In this categorization of waves, the oscillation motion causing the wave is perpendicular to the direction of propagation. Using your arm to move a cord is an example of this.
What is a transverse wave?
A wave interaction produced when the dimensions of a medium correspond to an integral multiple of half the wavelength of the waves and their reflections propagating in the medium. When this occurs, standing waves in the medium combine to produce a wave with much greater amplitude that the amplitude of the original wave causing the effect.
What is resonance?
This CDA staff member has been through the Panama Canal three times.
Who is Mr. Davidson?