1. In a wave pool, the waves carry energy across the pool
In a wave pool, the waves carry energy across the pool. You can see the effects of a wave's energy when the wave lifts people in the water.

2. What Are Mechanical Waves?
A mechanical wave is a disturbance in matter that carries________________from one place to another
The material through which a wave travels is called a _______________
Solids, liquids, & gases can act as mediums
A mechanical wave is created when an energy source causes vibration to travel through a medium.
Mechanical waves are classified by the way they _____________through a medium
The 3 main types of mechanical waves are transverse, longitudinal, and surface waves.

3. Transverse Waves The highest point of a wave is the ______________.
The lowest point of a wave is the ______________.
A single point on the rope vibrates up and down between a crest and trough.
The wave carries energy from left to right,____________to the up-and-down motion of the rope.

4. Longitudinal Waves
In a spring toy, the wave carries energy along the spring.
Vibration of medium is parallel to the direction the wave travels
Where the particles in a medium are spaced close together is a __________________.
Where the particles in a medium are spread out is a_______________.
Push
Compression
Pull
Direction of wave
Rarefaction
Compression
Rest position

5. Surface Waves
__________waves are the most familiar kind of surface waves.
A surface wave is a wave that travels along a surface separating _______________.

6. The bobber helps to visualize the motion of the medium.
As the ocean wave moves to the right, the bobber moves in a circle, returning to its original position
The bobber helps to visualize the motion of the medium.
When a crest passes the bobber, the bobber moves up. When a trough passes, the bobber moves down.
The bobber also is pushed back and forth by the surface wave, like the motion of a longitudinal wave.
The two motions combine, and the bobber moves in a circle.
Wave direction

7. A mechanical wave carries energy from one place to another through the
Assessment Questions
A mechanical wave carries energy from one place to another through the
physical transfer of matter.
interaction of electromagnetic fields.
phase changes of a medium.
vibration of a medium.
ANS: D

8. Assessment Questions
In what type of wave is the vibration of the medium parallel to the direction in which the wave travels?
transverse wave
longitudinal wave
surface wave
Rarefaction
ANS: B