Oceans Study Guide – Flashcards
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How many different seas are there labeled in the ocean now?
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7
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What percent of the Earth's water is saltwater?
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97%
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Submerged end of a continental plate. The last high ground before drop off into the ocean.
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What is a continental shelf?
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Divergent
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What plate boundary are mid-ocean ridges near?
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Challenger deep, 7 miles deep
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What is the deepest point of the Mariana Trench called? How deep is it?
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colonies
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Groups of corals are called what?
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diversity
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The (BLANK) of a coral reef can strengthen a coral reef because different organisms work together.
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Australia
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What continent is the Great Barrier Reef located near?
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Pacific blue tang
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In the movie Finding Nemo, what type of fish is Dory?
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Clownfish
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In the movie finding Nemo, what type of fish is Nemo?
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Tetrodotoxin
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What poison is inside of a pufferfish and can be deadly to predators that try and attack?
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They don't like to eat in front of other fish, and stick to the bottom reefs to save energy.
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What are two facts we learned about the Moorish Idol fish?
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density
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Mass divided by volume is the formula for (BLANK)?
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temperature
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The sun's rays hit Earth at different angles causing a difference in (BLANK)?
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Cold water, because the molecules get closer together.
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Which water is more dense, cold water or hot water? Why?
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Distillation and reverse osmosis.
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There are two different forms of desalination to remove salt from water, what are they?
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Salinity
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The amount of salt dissolved in water is called the (BLANK)?
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It decreases, this area is called brackish because the freshwater dilutes the salinity.
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What happens to the salinity level of the water when a river of freshwater flows into the ocean?
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Global warming causing evaporation.
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Why is the ocean getting saltier?
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The amount of water evaporated determine s the amount of salt in water. More salt less water.
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How does evaporation affect the salinity of the water?
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Hypertonic
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Saltwater fish have (BLANK) cells that absorb the salt their body needs from the water they swim in.
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There is more substance to freeze rather than just water.
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Why does salt lower the freezing point of water?
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Echolaction
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What is the name of the type of communication dolphins use underwater?
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They must give their body and equipment time to adjust to varying pressures or nitrogen levels.
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Why do scuba divers have to stop multiple times as they descend or ascend through the ocean depths?
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What zone is closest to the ocean floor?
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What zone is closest to the ocean floor?
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Intertidal zone
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What zone is the area where the high and low tide occur?
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Blob fish has no muscles and crowned ugliest fish in the world.
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What are two facts about one of the animals in your ocean zone?
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It uses its fins instead of jet propulsion.
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What is the difference about the movement of a dumbo octopus compared to other octopus species?
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It lures them in with it's biolomences.
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How does an angler fish bait its prey?
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Dolphins round up baitfish to the surface. Dive down which spooks the baitfish and separates them making it easier for dolphins to locate individual fish as well. They spread out prey so it's easier for the dolphin to snatch one.
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How do dolphins and shear water birds work together to hunt bait fish?
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currents
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The continuous movement of water in a regular pattern is called ocean (BLANK)
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Global winds, Temp, and Salinity
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What are the three main factors that affect currents?
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Density and Salinity
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What two factors affect the deep ocean currents the most?
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Surface currents
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What current is affected by continental deflection more, surface or deep currents?
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Clockwise
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The currents in the Northern Hemisphere move in which direction?
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Counterclockwise
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What direction to currents in the Southern Hemisphere travel?
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Temperature and Salinity. Dense objects sink. It happens with food products, plate tectonics, and the ocean. If water cools or gets saltier it gets more dense and sinks.
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What does the term thermohaline circulation mean?
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Poles
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When the water from the equator cools, where does it travel towards?
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Coriolis effect
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The currents on Earth move in a curved path because of what effect?
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Earth's rotation
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What causes the Coriolis effect and makes currents not move in a straight line?
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Tides
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(BLANK) are the ocean movement that follow the moon and sun's gravitational pattern.
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moon, because it is closer.
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The (BLANK) has the greatest control on the tides and why?
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The bay acts like a funnel to move larger amounts of water at a quicker rate.
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Why are the Bay of Fundy tides so drastic?
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spring
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When the Sun, Earth, and Moon are all in a straight line it is considered to be a (BLANK) tide
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Weak because during first and third quarter moon, the sun, moon, and Earth are not aligned so the gravity is pulled in different ways creating a neap tide.
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Are the tides of Neap tides strong or weak? Why?
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Tidal barrages and water turbines.
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What are at least two ways we can harness the power of the tide's energy? (Think of the in class discussion)
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Texas
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The most concentrated area of the Great Pacific Garbage Patch is about the size of the state of (BLANK)?
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Because the ocean is so polluted our fish has plastic on it because they eat it.
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Why does Captain Charles Moore claim that "no fish in the Pacific will soon be able to be classified as organic?"
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It shows us that even when were are lost all around God will bring us back to him and will forgive us.
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How does the Rubber Toy story show us redemption?
