5.1.2 Pulses

5.1.2 Pulses

by David Bittinger

​•PULSE - a single vibratory disturbance

–Transmits ENERGY but not MASS

 

•AMPLITUDE - height above equilibrium and directly related to ENERGY.

 

•MEDIUM - a continuum of particles of the same type that stores and releases energy.

•As a pulse travels in a medium it…

oDOES NOT LOSE SPEED

oLOSES AMPLITUDE (ENERGY)

•

​1958 Lituya Bay, Alaska Tsunami

​Jump to slides 4 & 5 on ppt

​

​Phenomenon #2 - Interference

​

Draw

Sketch the interference pattern when pulse A and B overlap

Draw

Sketch the interference pattern when the 2 pulses overlap

Multiple Choice

A pulse traveled the length of a stretched spring. The pulse transferred

• Energy, only

• Mass, only

• Both energy and mass

• Neither energy nor mass