Unit 6: WavesIntroduction to Waves

SWBAT: Identify parts of a wave and describe how the matter/energy in a wave moves as the wave movesMechanical Waves

a mechanical wave is a ________________________________ that carries ___________ from one place to another

o requires ____________ to travel througho a medium is the _______________ through which a wave travels

mechanical waves are classified by the way they _________________________________ the three main types of mechanical waves are:

o transverse waveso longitudinal waveso surface waves

Transverse Waves a transverse wave is a wave that causes the medium to vibrate at ____________________ to

the _________________________________________________o when you shake one end of a rope up and down, the _________________ causes a

waveo the _______________ point of the wave above the ________________________ is

the crest o the ______________ point of the wave ____________________________ is the

trougho wavelength ( ) is the distance between ______________________________ and the

____________________ on the next cycle of the wave; measured in _________________________________

o the amplitude of a wave is the ___________________________ of the medium from its rest position

Label the following in the diagram to the left:

amplitude trough crest

In Your Own Words…Describe how the motion of a snake can be thought of as a transverse wave.

Unit 6: WavesIntroduction to Waves

Longitudinal Waves a longitudinal wave is a wave in which the vibration of the medium is ____________ to the

direction the wave travelso in a spring toy, the wave generation from ____________________________ the end

of the toy carries energy from left to righto an area where the particles in the medium are _______________________________

is called a compressiono an area where the particles in the medium are __________________ is called a

rarefactiono as compressions and rarefactions travel along the spring toward the right, each coil

______________ back and forth ______________________________

Guided PracticeIn the diagram below, identify the parts of a wave by using the provided definitions.#____ = crest The highest point of the wave above the line of origin.#____ = trough The lowest point of the wave below the line of origin.#____ = line of origin Signifies the original position of the medium.#____ = wavelength The distance between two consecutive crests.#____ = amplitude The distance from the line of origin to a crest or trough of a wave.

Label the following in the diagram to the left:

rarefaction compression

In Your Own Words…Describe how the motion of an earthworm can be thought of as a transverse wave.

Unit 6: WavesIntroduction to Waves

Surface Waves Think OCEAN WAVES A wave that travels along a surface _____________________________

o Media: material through which a wave ______________ Wave movement:

o crest passes – object moves _____o trough passes – object moves ________o Up-and-down motion (_____________________) = perpendicular to the waveo Back-and-forth motion (______________________) = parallel to the waveo Motions combine = move in circle

Most waves do not __________________ matter from one place to another Only close to shore (due to ______________________________) does the wave carry the

medium toward the shore