do the wave
What are most waves created by?
The frictional drag of wind
What is the most common cause of tsunamis?
bonus points for a specific example
Elastic rebound from subduction zone earthquakes
2004 Sumatra tsunami
Name two of the pets living in my p-town house
Goose
Sadie
Millie
Dottie
What does DART stand for?
Deep-ocean Assessment and Reporting of Tsunamis
T or F: A tsunami can be taller than a windblown wave
FALSE
What is wavelength?
the distance between the successive crests or troughs of a wave
How many people have been killed by tsunamis?
several hundred thousand
What is the difference between a distant tsunami and local tsunami?
Distant tsunamis travel farther from their source before they hit land.
What is DART and what does it do?
it is a pressor sensor on the sea floor and it sends out warnings as little as 15 min after an earthquake
When do waves break?
When wave height is equal to water depth
What happens as waves approach the shore and what is it called?
They slow down which allows the back of the wave to catch up
Called runnup
What coast is vulnerable to a tsunami generated in the atlantic?
east coast
About how long did it take the 2004 Tsunami to cross the Indian Ocean from Indonesia to Africa?
7 days
What does it mean when a tsunami watch has been issued for an area?
An earthquake that can cause a tsunami has occurred
What are edge waves?
tsunami-generated waves that travel back and forth parallel to the shore
As waves approach shore what decreases and what increases?
wavelength decreases and wave height increases
What is a submarine landslide and where do they usually occur?
they are underwater landslides that usually occur on the islands of Hawaii
How long does it take a tsunami to cross the Pacific Ocean and at what mph?
It takes a day at 400mph
Which shorelines have the lowest tsunami hazard (least likely to be hit by a tsunami)?
Shorelines along the Atlantic Ocean
10+ meter high tsunamis have occurred how many times and in what country
3 times in Japan
What are three characteristics of windblown waves?
short wavelengths, brief periods, and no additional water mass
What can cause a tsunami?
extra points for specifics
anything that displaces and large volume of water
rockslide/avalanche
What tsunami generated the highest run-up ever recorded?
1958 Lituya Bay, Alaska
What are the three tsunami warning signs?
include times
How many different waves may occur during a tsunami and which one is usually the largest?
Consists of 3-10 waves, second or third may be the largest