Difference between revisions of "AY Honors/Marine Mammals/Answer Key"
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===b. Echolocation === | ===b. Echolocation === | ||
| + | Echolocation is how whales use sounds to locate objects (such as prey) and to orient themselves in the vast and three-dimensional ocean realm. Earlier, we learned that water is an excellent sound transmitter. Well, whales have capitalized on this characteristic of water to compensate for reduced vision in the sometimes cloudy water of the sea. | ||
| + | When sound is reflected after it strikes an object, it creates an echo. So, whales emit short sounds (called clicks) and locate objects by listening for the reflected echo. The animal can tell how far away the object is by measuring the time it takes for the echo to return to them. | ||
| + | |||
===c. Spyhopping === | ===c. Spyhopping === | ||
Revision as of 01:10, 16 February 2007
1. Be able to identify three of each of the following and know where each is found. Know at least one by scientific name from each group:
a. Toothed Whales
b. Baleen Whales
c. True Seals
d. Eared Seals
e. Dolphins/Porpoises
f. Walruses (one kind)
g. Sea Otter (one kind)
h. Manatees
2. Know and locate the story of how God used a whale in Bible times.
3. What is the largest mammal in the sea?
Largest is the blue whale (Balaenoptera musculus)
4. Explain the following words:
a. Breaching
Breaching is when a whale leaps into the air and falls on their backs.
b. Echolocation
Echolocation is how whales use sounds to locate objects (such as prey) and to orient themselves in the vast and three-dimensional ocean realm. Earlier, we learned that water is an excellent sound transmitter. Well, whales have capitalized on this characteristic of water to compensate for reduced vision in the sometimes cloudy water of the sea.
When sound is reflected after it strikes an object, it creates an echo. So, whales emit short sounds (called clicks) and locate objects by listening for the reflected echo. The animal can tell how far away the object is by measuring the time it takes for the echo to return to them.
c. Spyhopping
Spyhopping is when a dolphin and whales are in a vertical stance so they can look at there surroundings ubove the water
