WAVE VOCABULARY PRESENTATION Amplitude Compressional wave Concave Convex

WAVE VOCABULARY PRESENTATION Amplitude Compressional wave Concave Convex Diffraction Doppler effect Electromagnetic waves Focal point Frequency Interference Lens Medium Parabola Pitch Reflection Refraction Resonation Standing wave Transverse wave Wavelength Waves rock…

AMPLITUDE High amplitude: Lots of energy Low amplitude: Very little energy

COMPRESSIONAL (LONGITUDINAL) WAVE Sound is compressional: Air is compressed in the direction the sound is travelling. Earthquakes can be either transverse or longitudinal. Which would do more damage?

TRANSVERSE WAVE

CONCAVE “Cave”……. . duh………. .

CONVEX Opposite of “Cave”……. . duh………. .

DIFFRACTION Water wave diffraction Guess you didn’t know that water could “bend”…eh? You will do this in a ripple tank…

DOPPLER EFFECT Listen to Mr. Knapp’s imitation of a train going by…

ELECTROMAGNETIC WAVES Sometimes light and other electromagnetic waves are thought of as particles. It depends upon what circumstances we are examining…

FREQUENCY How many times do the “tines” of the fork vibrate back and forth per second? Surfers can tell you the frequency of waves in a “set”… How often do we have to do this anyway….

INTERFERENCE We will produce some patterns like the above in one lab, using protractors and rulers, then look at the same on my homemade water tank for projection.

LENS We can make light waves do what we want them to by using lenses…

MEDIUM/MEDIA Glass Water We will look at refraction, diffraction, interference in these media… Plastic

PARABOLA Y = 2 X 2 + 3 Parabolas are defined by a quadratic equation. YOU are going to draw and build one…

FOCAL POINT Both pictures show a focal point. The on the dish is where the TV receiver is.

PITCH Do you have a good ear? Can you hear different “pitches” or notes, even flats & sharps? How many “Hertz” is a C note?

REFLECTION Bounce…

REFRACTION

RESONATION The above animation shows how only certain frequencies will create standing waves or “resonate” within a certain distance.

STANDING WAVE The above animation shows how only certain frequencies will create standing waves or “resonate” within a certain distance.

WAVELENGTH Gamma waves are short, radio waves are long… C-notes are short, G notes are long… Deep notes resonate in big boxes…