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Transcript of Wave Interactions
Science Objective: Students will be able to describe reflection, refraction, diffraction, interference, and resonance. Wave Interactions Reflection occurs when a wave bounces back after striking a barrier. Reflection The bending of a wave as it passes at an angle from one medium to another Refraction Light waves passing at an angle into a new medium, such as water-are refracted because the SPEED OF A WAVE CHANGES. The bending of waves around a barrier Diffraction When a wave hits a wall with a small opening, the wave will spread out after going through the small opening. When two OR more waves overlap Interference Occurs when the crests of one wave overlap the crests of another wave or waves.
Constructive Interference INCREASES AMPLITUDE. Constructive Interference Occurs when the crests of one wave and the troughs of another wave overlap.
Destructive interference DECREASES AMPLITUDE Destructive Interference Standing Waves Combination of two waves moving in OPPOSITE directions, each having the SAME amplitude and frequency.
*They look like they’re not moving – thus “standing” Occurs when a vibrating object causes another object to vibrate at its natural frequency. Resonance When trying to spear a fish in water, a person needs to take into account the way light bends as it moves from water into air. The bending of light as it passes from one medium into another is known as...
D. Polarization Review And, the answers are.... Elisa and Ana are out shopping at Old Navy. While looking at a pair of shoes through the window of Sheikh's Shoes, they notice that they can also see themselves on the window. What wave behavior is described in this scenario?
D. Polarization 1. The bending of light as it passes from one medium into another is known as REFRACTION (B).
2. The wave behavior described in this scenario is REFLECTION (A). Wave speed is calculated using wavelength AND frequency.
Wave Speed= Frequency x Wavelength
In the ocean, a wave has a wavelength of 4 m
and a frequency of 2 Hz.
What is the wave’s speed?
Wave's speed= 4m x 2 Hz
Wave's speed= 8 m/s Calculating Wave Speed Bob sings a high note, which results in a sound wave with a frequency of 50 Hz and a wavelength of 2 m. What is the speed of sound? YOUR TURN! Start working on your wave interactions worksheet with a partner QUIETLY for the rest of the period.
Whatever you DO NOT finish in class, is YOUR HOMEWORK FOR TONIGHT!
Bring your COMPLETED wave interactions worksheets to class tomorrow!
REMEMBER WAVES TEST FRIDAY!