Ocean Waves
Tsunamis
The Tacoma Narrows Bridge Disaster
Sound Waves
Acoustic Engineering
100
This causes ocean waves.
What is wind?
100
A natural disaster that comes as a wave.
What is a tsunami?
100
The Puget Sound in Tacoma, Washington.
Where was the Tacoma Narrows Bridge located?
100
A mechanical phenomenon where quick back-and-forth movements occur in a repeating pattern.
What is a vibration?
100
The art of arranging vocal, instrumental, or mechanical sounds to create some combination of form, harmony, melody, rhythm, or otherwise expressive content.
What is music?
200
These are called the troughs and crests.
What are the low and high points of a wave?
200
Movement of the Earth's crust such as underwater earthquakes, volcanoes, landslides, or even meteor strikes.
What causes tsunamis?
200
A suspension bridge.
What kind of bridge was the Tacoma Narrows Bridge?
200
A substance or material (gas, liquid, solid).
What is a medium?
200
Pitch/frequency, amplitude/dynamics (loudness or softness), timbre (tone color), period/duration, and wavelength.
What are the properties of sound and particularly musical sound?
300
This is an up-and-down motion in a repeating pattern. It's a repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.
What is oscillation?
300
Twice, first as the water moves in, and again as the water recedes.
How many times does the energy in the water carry objects like cars and people during a tsunami hitting the shore?
300
The budget.
What was the major constraint in the design of the Tacoma Narrows Bridge?
300
A short burst that travels as a wave; a single vibration or short burst of sound, electric current, light, or other wave.
What is a pulse?
300
The study of sound; the branch of physics concerned with the properties of sound; the properties or qualities of a room or building that determine how sound is transmitted in it.
What is acoustics?
400
The points where the wave crosses the still water or resting line.
What are nodes?
400
It might look like a "low tide" or a "disappearing sea."
What is the drawback, trough, or the first part of the tsunami that people on the shore see as the water drops and feeds the tsunami?
400
Clark Eldridge's deep frame and open beams design that would have allowed wind to pass through.
Which was the first design considered for the Tacoma Narrows Bridge?
400
Nervous
What is the system that interprets vibrations as sounds?
400
The measurement for the amplitude of sound; a unit used to measure the intensity of a sound; a degree of loudness.
What are decibels?
500
The height of the wave as measured from crest to node.
What is amplitude?
500
Speed, Period, Length, Depth, Location
What are (tsunami) wave properties?
500
Leon Moisseiff's shallow and closed-frame design that prevented air flow.
Which was the first design to actually be used to build the Tacoma Narrows Bridge resulting in the failure, collapse, and disaster?
500
Amplitude (intensity, volume) and frequency (pitch).
What are the properties of sound?
500
wave movement , to cause to spread out and affect a greater number or greater area : extend; to pass along to offspring; spread and promote (an idea, theory, etc.) widely.
What is propagate?
750
When the wave height is about the same as the water depth and the wave curls forward. When the wave steepness (the ratio between wave height and wavelength) exceeds a ratio of 1:7. The slope of the sea floor greatly influences how quickly the sea floor affects the waves as the waves get closer to shore, and therefore how the waves break.
When does the wave crest become unstable and break on the shoreline?
750
This is how many tons of water were displaced and sent surging in all directions during the 2004 Indian Ocean tsunami.
What are billions?
750
Galloping Gertie
What did the builders call the first Tacoma Narrows Bridge?
750
Mechanical because it passes through a physical medium.
What type of wave is sound?
750
One describes how the sounds bounce off of something and the other describes how the sounds soak into something.
What are reflect and absorb?
1000
λ
What is Lambda or the Greek symbol for wavelength?
1000
Deep-Ocean Assessment and Reporting of Tsunamis
What is DART?
1000
Tubby
What was the name of the only fatality (dog) of the Tacoma Narrows Bridge Disaster?
1000
Because a vacuum is an empty, airless space and there is no medium for the screaming sound to travel through.
Why is it true that in space no one can hear you scream?
1000
The collection of closely spaced reflections off many surfaces; prolongation of a sound; resonance; a continuing effect; a repercussion.
What is reverberation?