Tsunamis are shallow-water waves because their wavelengths are so ...

[nummyann]

Tsunamis are shallow-water waves because their wavelengths are so long that they will never be in
  water deeper than its wavelength. Indicate whether the statement is true or false.

Question 2

When tsunamis begin to break ashore, they have very high wave crests. Indicate whether the statement is true or false.

[Mochi]

Answer to Question 1

ANS: T
Tsunamis can have wavelengths of 100 kilometers. The deepest ocean trenches only reach 11
kilometers in depth. Information can be found in the section Contemporary Oceanography Makes Use
of Modern Technology

Answer to Question 2

ANS: F
Tsunamis are fast onrushes of water. They flood an area quickly, but are not plunging breakers.
Information can be found in the section Water Displacement Causes Tsunamis and Seismic Sea Waves.

[nummyann]

TYSM

[amandalm]

Great answer, keep it coming