The Polynesian colonies used a system of shells and bamboo to represent island positions for
navigation. Indicate whether the statement is true or false.
ANS: T
It is thought that bamboo grids with shells attached were used by early oceanic navigators. Modern
representations can be seen in Micronesian stick charts. Information can be found in the section
Understanding the Ocean Began with Voyaging for Trade and Exploration
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The tidal waves portrayed to the general public are not true tidal waves. Indicate whether the statement is true or false
Which major physical feature in North America was created by down-cutting?
A) The Appalachian mountains B) The Erie Canal C) The Great Lakes D) The Grand Canyon
In a series of stream terrace levels, the oldest terrace is the one that is lowest in elevation
Indicate whether this statement is true or false.
Which of the following is an advantage of radar over all other remote sensing techniques?
A) It can operate at high altitude. B) It can operate at night. C) It can operate in clear weather. D) It can operate at wavelengths shorter than 1 micrometer. E) It can operate without using an electrical source.