Why do tsunami waves always behave as shallow water waves?
a) The statement is incorrect; tsunami waves are never shallow water waves.
b) Because they are caused by the gravitational attraction of the Sun and Moon.
c) Because waves generated by tsunamis do not have the same behavior as normal wind-generated waves.
d) Their wavelengths are long enough that anywhere in the ocean the water depth is less than L/20.
e) Tsunami waves are extremely fast, which means they feel the ocean bottom no matter where they are.
D
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When 100-kg astronaut Sally ejects 0.1 kg of gas at 50 m/s from her propulsion pistol, she recoils at
A. 5.0 m/s. B. 0.5 m/s. C. 0.05 m/s. D. 50 m/s.
The United State can export its electronic waste legally simply because it has not ratified the Basel Convention.
Answer the following statement true (T) or false (F)
The difference between the atmosphere's "permanent" gasses and "variable" gasses is that:
A) permanent gasses exchange rapidly between the atmosphere and the biosphere. B) variable gasses are so called because of their horizontal displacement. C) permanent gasses exhibit a constant proportion from the earth's surface to higher reaches of the atmosphere. D) variable gasses are dependent on storms for world-wide dispersion.
An ice mass of compacted and recrystallized snow that flows under its own weight on land is called
a(n) ____________________. Fill in the blank(s) with the appropriate word(s).