When they reach a shoaling coast or island, tsunamis
When they reach a shoaling coast or island, tsunamis _______.
a. make the transition from deep-water waves to shallow-water waves
b. slow, shorten, and build
c. are often first noticed on a beach as an abnormal retreat of water off the beach
d. All of the above are correct.
e. Both b and c are correct.
36. In the United States, _______ is(are) most at risk from tsunamis.
a. the eastern seaboard including Washington DC
b. Hawaii and Alaska
c. California, Oregon, and Washington
d. the coastline of the Gulf of Mexico