Waves Openers Mrs. V Science 2015

A. Crest, B. Wavelength, C. Trough, D. Amplitude

A. Crest, B. Wavelength, C. Trough, D. Amplitude Amplitude Wavelength Crest Trough

Rarefaction wavelength compression crest trough

Rarefaction trough crest wavelength compression

A. Electromagnetic Wave B. Mechanical Wave  1. Sound waves  2. Light waves  3. Radiation waves  4. Waves in the ocean  5. Waves in a slinky

A. Electromagnetic Wave B. Mechanical Wave  1. Sound waves  2. Light waves  3. Radiation waves  4. Waves in the ocean  5. Waves in a slinky

Practice!  Draw a transverse wave and label the crest, trough, wavelength and amplitude  Draw a longitudinal wave and label compression, rarefaction, and wavelength

Transverse Wave wavelength amplitude trough crest

Longitudinal Wave compression rarefaction wavelength

Waves and Media 1.Look at the wave pictured below. What is the medium that the wave is traveling through? 2.What is the source of energy causing the wave? Label 3 &

Waves and Media 1.Look at the wave pictured below. What is the medium that the wave is traveling through? 2.What is the source of energy causing the wave? Label 3 & The rope The hand crest trough transverse longitudinal

SOUND WAVES Word bank: vibration, high, low, waves, compression, rarefaction  1. Sound travels in _________________.  An area where particles are crowded produces a ________________.  Sound is caused by ________________ of particles through a medium.  An area where particles are spread apart is called a ________________.  High frequency creates a ____________ pitch sound.  Low frequency creates a ___________ pitch sound.

SOUND WAVES Word bank: vibration, high, low, waves, compression, rarefaction  1. Sound travels in _________________.  An area where particles are crowded produces a ________________.  Sound is caused by ________________ of particles through a medium.  An area where particles are spread apart is called a ________________.  High frequency creates a ____________ pitch sound.  Low frequency creates a ___________ pitch sound. waves compression vibration rarefaction high low

Sound  1. Which of the waves represents a higher pitch sound?  Which of the waves has a higher frequency?  Which of the waves has a higher amplitude?  If this was over the time of one second, what would the frequency be of wave A?  What would the frequency be of wave B? A B

Sound  1. Which of the waves represents a higher pitch sound?  Which of the waves has a higher frequency?  Which of the waves has a higher amplitude?  If this was over the time of one second, what would the frequency be of wave A?  What would the frequency be of wave B? A B WAVE B Neither-they have equal amplitude 3 Hz 8 Hz

SOUND Waves  1. Sound travels in ________________ waves.  2. When sound bounces back at you it is called a(n) ________________.  The speed of sound through air is about ______________mph.  You can hear sounds because the vibrations cause your _________ __________ to vibrate and send signals to your brain.

SOUND Waves  1. Sound travels in ________________ waves.  2. When sound bounces back at you it is called a(n) ________________.  The speed of sound through air is about ______________mph.  You can hear sounds because the vibrations cause your _________ __________ to vibrate and send signals to your brain. longitudinal echo 700 ear drum

Sound interactions 1. When compressions overlap with compressions it causes _____________ interference. 2. When compressions overlap with rarefactions it causes ______________ interference. 3. An explosive boom heard when a shock wave reaches your ear is called a ________ ___________. 4. Musical instruments use _________________ to make sound.

Sound interactions 1. When compressions overlap with compressions it causes _____________ interference. 2. When compressions overlap with rarefactions it causes ______________ interference. 3. An explosive boom heard when a shock wave reaches your ear is called a ________ ___________. 4. Musical instruments use _________________ to make sound. constructive destructive Sonic boom resonance