CH. 5 Tsunami Homework Part B
The majority of tsunami are caused by underwater_______.
Fault movement
Which of the following caused the Indian Ocean tsunami of 2004?
Fault movement
Which of the following caused the tsunami that killed 159 people in 1946?
Fault movement
Which of the following is the least frequent cause of a tsunami in recent centuries?
Meteorite impacts
What is a typical tsunami wavelength?
More than 200 km (124.3 Miles
What tools toes the Pacific Tsunami Warning Center use in creating tsunami warnings?
PTWC uses ocean buoys, deep ocean pressure sensors, and satellites to detect tsunamis.
A vast majority of all large tsunami are generated in the __________ ocean.
Pacific
A tsunami is considered to be a:
Shallow water wave
A tsunami may result from:
Tectonic activity on the seafloor.
Judge the following sentence according to the criteria given below: Transform faults do not generally generate a tsunami BECAUSE the side to side movement of these faults does not change the volume of the ocean basin.
The assertion and the reason are both correct, and the reason is valid.
Judge the following sentence according to the criteria given below: Many people called tsunami "tidal waves" BECAUSE they are related to the tides.
The assertion is correct, but the reason is incorrect.
What disturbing force is responsible for producing the majority of tsunami?
The uplift or down drop of a tectonic plate.
Which of the following are unlikely to generate a tsunami?
Transform fault
Which of the following caused the tsunami at Krakatau in 1883
Volcanic eruption
Why was the 2004 Indian Ocean tsunami so deadly?
1. People did not recognize the signs of an approaching tsunami. 2. Indian Ocean tsunami are relatively rare. 3. People did not immediately evacuate following the offshore earthquake.
What caused the Indian Ocean tsunami of 2004?
A 9.2 magnitude earthquake off the coast of Indonesia in the Java Trench.
What is a tsunami?
1. A shallow water wave caused by displacement of the water column. 2. A seismic sea wave.
What can cause a tsunami?
1. An undersea volcanic eruption 2. An undersea landslide 3. A meteor impact on the ocean 4. An undersea earthquake
Of the following statements about tsunami, which is/are true? Choose all that apply
1. At the coast, a tsunami looks like a suddenly occurring high or low tide, which is why they are misnamed "Tidal waves." 2. Tsunami have a very long wavelength, so they travel at very high speeds. (Equivalent to the speed of a jet airplane) 3. The tsunami warning system uses seismic waves and deep ocean pressure sensors to detect tsunami. 4. Tsunami are undetectable by ships in the open ocean.
