PHY1020-Chapter 7 Word Scramble

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Question	Answer
Beats measure:	The difference between two frequencies.
Waves tend to bend in to the side:	With slower wave velocity.
The fastest earthquake wave is the:	P wave.
The slowest earthquake wave is the:	L wave.
An octave refers to two frequencies that differ by a factor of:	2.
When two different waves pass through an opening of the same size, which one will spread more? Smaller wavelength Larger wavelength Higher frequency Lower frequency
The fastest sound wave is:	They all travel at the same speed.
You can measure the distance to the epicenter by measuring:	The time between the P and S waves.
Sound travels fastest in:	Rock.
When an opening gets smaller, a wave that passes through it:	Spreads more.
The very center of the Earth is:	Liquid iron.
What kind of earthquake is purely longitudinal?	P wave.
Which of the following statements about earthquakes is true?	P waves are the fastest, and L waves cause the most destruction.
The L wave is often the most damaging because:	It stays on the surface, so it doesn't spread out very much.
An earthquake wave does its worst damage when it reaches an area that:	Slows it down.
Landfill is dangerous because:	The amplitude of the earthquake increases.
When there is an atmospheric inversion, sound tends to:	Bend downward.
The ocean sound channel:	Is very quiet.
Sound tends to bend toward the side with:	Colder air.
The same note is played on two pianos. Beats are heard once per second. From this, we deduce that:	At least one of the pianos is out of tune (the notes are at the wrong frequency.)
We know that the inner part of the Earth is liquid because:	No S waves move across it.
A magnitude 9 earthquake, compared to a magnitude 8 earthquake:	Has 10 to 30 times the energy.
You feel the tremors of an earthquake. Ten seconds later, you feel another shaking. The distance to the epicenter is about:	50 miles.
If we double the frequency of sound, the wavelength is:	Halved.
Beats demonstrate that:	Sound is a wave.
The velocity of sound is approximately:	1000 feet per second.
The speed of sound in air:	Increases as temperature increases.
Sounds waves are:	Compressional (longitudinal)
On a typical day, sound emitted near the ground tends to bend:	Upward, toward the sky.
You are more likely to hear distant sounds when:	The air near the ground is cool and the air above it is warm.
Because of evaporation, the air above the surface of a lake becomes cool. Sound in the air above the lake will tend to:	Bend downward toward the surface.
To have a sound channel, there must be:	An increase in the velocity with depth.
SOFAR took advantage of:	The sound channel in the ocean.
Water waves are:	Both transverse and longitudinal.
The sound channel in the ocean carries sound a long distance because:	The sound doesn't spread in the up or down directions.
As you travel deeper into the ocean, the water temperature:	Decreases with depth.
A pianist plays 2 keys: middle C, and the C above middle C (i.e., an octave higher.) The SPEED OF SOUND for the higher frequency, comopared to that for the lower frequency, is:	The same.
As you move to a higher altitude, the temperature of the air:	First gets cooler, then warmer.
The atmospheric sound channel would not exist, if not for:	Ultraviolet light.
The ozone layer is created by:	Sunlight.
SOSUS refers to:	A system for detecting submarines.
Which of the following statements was true about Project Mogul?	It was concerned with the atmosphere.
According to this text, the flying disks that crashed near Roswell were:	Microphones.
Very long wavelength water waves:	Travel faster than short ones.
Whales and fiber optics both make use of what principle?	Huygens.
When an earthquake at sea starts a tsunami or tidal wave, the initial height is relatively small. What accounts for the towering wave that breaks near the shore?	The wave moves slower.
A water wave has a wavelength of 10 meters and a frequency of 2 cycles/sec. It's velocity is:	20 meters per second.
The sound from a passing car sounds like a high pitch, but as it passes, it gets lower. That's an example of:	The Doppler Shift
Thunderclouds tend to rise until:	They reach air that is warmer than they are.
The atmospheric sound channel is created because of:	Ultraviolet light.
In the daytime, sound tends to:	Bend upward.
Most damage from an earthquake usually comes from the:	L wave.
For sound waves, low-frequency waves travel:	At the same speed as high frequency.
The piano note A above middle C is 440 Hz. The next higher A has a frequency:	880 Hz.

Created by: SilhouetteXD