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30 Cards in this Set

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  • Back
aquatic animals
Aqua is a Latin word that means “water”
Swimming animals are often called aquatic animals.
nekton (nek’ tun)
Greek word meaning swimming
Animals that can swim, usually get around by propelling, gliding, or paddling through the water, usually have fins or flippers; whales, seals, fishes, sea snakes, turtles, octopuses, and squids are all nektonic animals
benthos (ben’ thahs)
benthic (ben’ thic) animals
Animals that don’t (cannot) swim but scurry, crawl, hop, scoot, burrow, or slither across the bottom of a body of water are called benthos.
sessile (ses’ uhl)
From Latin sessilis, which relates to sitting
Sessile animals stick themselves to one place and just sit there.
(plangk’ tun) From Greek word planktos, which means to wander or drift
There are two kinds of plankton: phytoplankton (fye’ toh plangk’ tun) and zooplankton (zoh’ uh plangk’ tun)
phytoplankton (fye’ toh plangk’ tun)
Phytoplankton are a lot like plants, because they use the sun to make their own food.
zooplankton (zoh’ uh plangk’ tun)
Zooplankton are more like animals. They need to eat to get food. They often eat phytoplankton. They can swim a little, but not enough to overcome the currents.
Mammals are Warm-blooded creatures that breathe air, “warm-blooded” means their body temperature is always the same, they give birth to live young that drink milk from their mother’s body, they have a backbone and hair
Reptiles are cold-blooded creatures that have scales, breathe air, lay eggs, and have a backbone. “cold-blooded” means that the body temperature changes with their surroundings
vertebrate (vur’ tuh brayt)
Vertebrate (vur’ tuh brayt) has a backbone, invertebrate does not have a backbone
Amphibians have scales, breathe air, lay eggs, and have a backbone.
Head of river
The current in a river moves water from the beginning of the river (head) to its end (called the mouth).
When you add “in” to the beginning of a word, it means “without”, without a backbone.
mouth of river
The current in a river moves water from the beginning of the river (head) to its end (called the mouth).
surface currents
Currents that form on the surface of the oceans are called surface currents.
gyres (jires)
Circular patterns of the world’s oceans.
thermohaline (thur moh hay’ line) currents
Thermo means heat and haline means salt. A deep ocean current caused by heat and salt.
high tide
When the water comes way up on the shore it is called a high tide.
low tide
When the tide pulls way back exposing a lot of beach, we call it low tide.
spring tide
During a new moon or a full moon, the high tide is higher than usual and the low tide is lower than usual. This is called a spring tide.
neap tide
When the sun’s gravity works against the moon’s gravity, making the high tides lower and the low tide higher you could say the earth is experiencing neap tides.
Pacific, Atlantic, Indian and Arctic
Seas are smaller than oceans, but are made up of salt water because they are connected to oceans, seas are mostly surrounded by land and are usually joined to an ocean on at least one side.
fresh water
Fresh water means that the waters are not salty like the ocean
Water that has become salty
estuary (es’ choo air’ ee)
The place where a river meets with an ocean or sea is an estuary. Where the estuary is closer to the river, the water is less salty, and it becomes saltier the closer I is to the ocean.
continental shelf
When you start walking out into the water from the shore, you are not on dry ground, but it’s still part of the continent.
continental slope
At the end of the continental shelf, there is a drop off into the deep ocean. This drop off is called the continental slope. It is like a giant cliff.
continental rise
One part near the end of the drop-off has a more gentle slope. It is called the continental rise.
abyssal plain
The deep ocean floor is called the abyssal plain.