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zoology 2
Test 1 lessons 1-2
Question | Answer |
---|---|
Why do whales "beach" themselves? | they are disoriented or sick |
What causes tides? | the moon |
What is the beginning of a river called? | Head |
Thermohaline currents are caused by what? | temperature and salt levels |
What happens to the blowhole when a whale is under water? | it closes tight |
The moon takes more than how many days to travel around the earth? | 28 |
The place where a river meets with an ocean | estuary |
Use the sun to make their own food. | phytoplankton |
a circular current pattern in the ocean. | gyre |
Name the 4 zones of the ocean floor | continental slope, continental shelf, continental rise, abyssal plain |
What must a calf do as soon as it is born? | get to the surface to get air |
a whale leaping into the air and flopping in the water with a big splash | breaching |
what is conservation | saving something |
Which whale has a single long horn | narwhale |
means has a backbone | vertebrate |
These creatures clean up the oceans and rivers of the world. | filter feeders |
When dolphins race near the surface and make low leaps out of the water it is called what? | porpoising |
What do most toothed whales have that allow them to see in the dark? | melon |
animals that swim | necktonic |
why were whales hunted and killed in the early 1900's | money |
Which is the largest animal on earth? | the blue whale |
What is the most important sense for cetaceans? | hearing |
Which famous whale sings a low, moaning song that lasts for 10-20 minutes? | humpback whale |
What do we know about the whale's breathing system | it is completely separate from its mouth |
Cetacean's breath through their what? | blowhole |
when a whale slaps the water with its fluke and that is all that is above water | lobtailing |
Whales migrate in groups called what | pods or herds |
when a whale sits straight up out of the water with its head up | spyhopping |
What was whale blubber used for | oil |
these animals don't swim... they scoot, crawl, scurry burrow or slither | benthic |
The end of a whales tale is called a what? | fluke |
Whales are called "cetaceans" which are divided into what 2 groups? | baleen whales and toothed whales |