Koch
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What makes water a unique compound? (5 things) | Only substance that exists a liquid, gas, and solid in nature, has a high specific heat, forms droplets on solid surfaces, the frozen form (ice) floats on the liquid form (water), substances dissolve in water
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| What are the molecules in water and what are their charges? | Hydrogen- Negative, Oxygen- Positive
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| What is polarity? | A condition in which opposite ends of a molecule have slightly opposite charges, but the overall charge of the molecule is neutral.
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| What is cohesion? | The attraction of molecules that are similar
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| What is adhesion? | The attraction of molecules that are different.
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| Is the density of ice greater, or less than the density of water? | The density of ice is greater than the density of an equal amount of water.
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| When is the density of freshwater at it's highest temperature? | 4 degrees Celsius
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| What happens to a frog's environment in winter (when it is cold enough for the water to freeze)? | The water will freeze over and if the frog is caught under the ice, he will most likely die if he does not get to a warmer world zone.
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| What are the five oceans on Earth? | Pacific, Atlantic, Indian, Southern, Arctic
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| What are two sources of Earth's ocean water? | Condensation, Asteroids and comets carrying water
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| How did the Earth's oceans become salty? | Millions of years ago, rain fell and dissolved some minerals (most containing salt) and the mineral water ran into the oceans.
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| What is salinity? | The measure of mass of dissolved solids in a mass of water. Usually measured in ppt.
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| Define brackish water. | Fresh water mixed with some salty water. Usually 5-17 ppt.
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| What are two resources that come from the seafloor? | Oil and natural gas, minerals such as manganese, gold, and zinc
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| State four criteria scientists use when classifying ocean zones. | Sunlight, temperature, salinity, and density
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| What are the three ocean zones? | Surface zone, middle zone, deep zone
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| What is ocean current? | A large volume of water flowing in one direction.
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| What is a gyre and identify five major gyres. | Gyre- a circular system of currents
North Pacific, South Pacific, North Atlantic, South Atlantic, Indian Ocean
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| What is the effect of the Coriolis effect on the movement of surface currents? | Southern hemisphere- currents move left in a counterclockwise direction
Northern hemisphere- currents move right in a clockwise direction
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| Why does upwelling occur? | Wind blows across the surface of a body of water and pushes water away from that area.
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| What is a benefit of upwelling? | The cold water that is pushed up supports living creatures.
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| What are density currents? | They carry water from the surface to ocean depths
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| What are density currents caused by? | Changes in density
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| How can surface currents effect an area's weather and climate? | They can cause warm of cold climate/weather
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| How do temperature differences along the south-eastern coast of the United States change weather and climate? | Summer evenings are warm and humid, rain is common
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