Download Chapter 10 Waves

Chapter 10
Waves
Section 1
Jerred Tarrell
What are Waves?
•A wave is a repeating disturbance or movement that transfers energy
through matter or space.
•Ocean waves disturb the water and transfer energy through it.
•During earthquakes, energy is transferred in powerful waves that travel
through the earth.
•Light also is a type of wave that can travel through empty space to transfer
energy from place to place, just like when the Sun sends energy to Earth.
Transverse Waves
•The matter in the medium moves back and forth at a right
angle to the direction the wave is traveling.
•Transverse waves only travel through matter.
•To show an example of a transverse wave you could shake
one end of a rope while someone else holds the other end,
the energy from your hand will create a wave.
Transverse Waves
Compressional Waves
•Matter in the medium moves back and forth along the same
direction the wave travels.
•Like a transverse wave, a compressional wave only travels
through matter.
•One way to model a compressional wave is to use a slinky and
squeeze several coils together, let go of the coils, and watch a
wave travel through the spring.
Compresssoinal Waves
Seismic Waves
•Seismic waves are created from earthquakes.
•Seismic waves are a combination of transverse and
compressional waves.
•They travel through Earth and along Earth’s surface.
•When objects absorb energy from a seismic wave the object
will move or shake.
•The more of Earth’s crust that is moved the more energy there
is released.
Seismic Waves
Section 1 Vocabulary
1. Wave- repeating disturbance or movement that transfers energy through
matter or space.
2. Medium- the matter that waves travel through
3. Transverse Wave- matter in the medium moves back and forth at right
angles to the direction that the wave travels.
4. Compressional Wave- matter in the medium moves back and forth along
the same direction that the wave travels.