# 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Wave Interactions.

## Presentation on theme: "10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Wave Interactions."— Presentation transcript:

10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Wave Interactions Wave Properties Wave Properties The E. S.Sound

the angle of incidence

Angle B

A wave bends as it crosses a boundary

refraction

Which ray best describes the path of the light reflected from the mirror?

Ray c

What is the amplitude of this wave?

2 meters

When multiple waves combine to make a wave of smaller amplitude?

Destructive interference

Which graphs has an amplitude of 10 centimeters?

Graph C

Which of the graphs has a period of two seconds?

Graph C

Which diagram illustrating two waves “in phase”? AB C

Diagram A

The distance from crest to crest

The wavelength of a wave

Waves that travel perpendicular to the direction of oscillations?

A transverse wave

Number of cycles that occur in one second

frequency

How many anti-nodes does this standing wave have?

Three anti-nodes (Four nodes)

Reflected sound is called?

echo

What is the wavelength of this waves?

λ = 1 meter

The unit for frequency

Hertz

What is the area pointed to in #2:

rarefaction

What types of waves is this:

Compressional or longitudinal

The energy of a wave is in its:

Amplitude

= a system that shows harmonic motion.

Oscillator (oscillating system)

How many complete cycles are there on this graph?

(4) four

When motion is faster than the speed of sound?

supersonic

Polly is standing on the bottom of a wide canyon, leaning against its wall. She shouts "hello" toward the opposite side of the canyon. If the speed of sound is 340 m/sec and Polly hears her own echo 4 seconds later, how wide is the canyon?

680 meters 2 seconds (2 seconds x 340 meters/sec)

Sound waves are always (type of wave)?

compressional (longitudinal) waves

What is this wave’s period?

2 seconds

The amplitude of a wave of sound is :

loudness

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