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Sailing ballast: Quiz


Question 1: This article incorporates text from a public domain ________ report: Copeland, Claudia.
Expulsion from the United States CongressCongressional Research Service reportsUnited States Senate PageCongressional Research Service

Question 2: [1] Studies suggest that the economic cost just from introduction of pest mollusks (________, the Asian clam, and others) to U.S.
Zebra musselDreissenidaeBivalviaQuagga mussel

Question 3: Ballast is used in sailboats to provide moment to resist the lateral forces on the ________.
Fore-and-aft rigGunterSailSail-plan

Question 4: On larger modern vessels, the keel is made of or filled with a high density material, such as ________, iron, or lead.

Question 5: A heavier craft ________ more slowly than a lighter craft, and is generally less responsive to steering input.

Question 6: Ballast water discharge typically contains a variety of biological materials, including plants, ________, viruses, and bacteria.


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