30

Animate

60

Less

1

Fixed End Reflect

Free End Reflect

100

Least

31

Most

Cross Boundary

180

Run Simulation

More

10

What effect does the density of a medium have upon the speed at which waves travel through the medium? Alter the density, run the simulation, and observe the effect upon speed.

StopAll

Middle

TestThis

6

Boundary Crossing

8

Density and Speed

Tap to select an option.

Reflection: Fixed End

No

Reflection: Free End

Relative Density of Medium 1

PrepBC

Select relative densities for Medium 1 and Medium 2. Then run the simulation. Can you determine any behavior patterns associated with a wave crossing a boundary?

3

Reset

What happens when a wave reaches the end of the medium and the last particle is fixed and unable to vibrate up and down? Run the simulation and find out.

Relative Density of Medium 2

What happens when a wave reaches the end of the medium and the last particle is free to vibrate up and down? Run the simulation and find out.

Dec. Density

Inc. Density

Relative Density of Medium

Traveling Wave

Investigate … the effect of medium density on wave speed, the reflection of a wave off a fixed end, the reflection of a wave off a free end, and the behavior of a wave crossing a boundary.

Start

The Boundary Behavior of Waves