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Ocean review
| Question | Answer |
|---|---|
| What is seawater? | Water mixed with salt found in the ocean. |
| What is one way Earth got its water? | Asteroids and comets fell to earth with water in them. |
| What is brackish water a mixture of? | Freshwater mixed with seawater. |
| How did Earth's oceans get their salt? | The water falling to earth dissolved minerals that it washed over. |
| What is adhesion? | Opposite molecules that attach to each other. |
| What is cohesion? | Similar molecules that attach to each other. |
| How can salinity percentages be expressed? | How much salt would be in 1,000 grams of water. |
| When depth in a tropical region increases what happens to salinity? | Salinity would decrease as depth increases. |
| In temperate regions, as depth increases what happens to density? | Density would increase as depth increases. |
| In polar regions, as depth increases what happens to temperature? | Temperature would stay about the same as depth increases. |
| How do icebergs float? | Water is denser as a liquid than solid so icebergs float on top since it is less dense. |
| How do frogs and fish survive under ice? | Ice is less dense than water underneath it so it floats and it then insolates the water underneath it. |
| What is polarity? | When opposite ends of molecules have slightly opposite charges but the charge is neutral overall. |
| Water can exist in what three forms? | It can exist as a solid, liquid, and gas. |
| Water is densest at what temperature? | Its is densest at 4C. |
| Water is least dense at what? | It's least densest at 0C. |
| What are currents? | Currents are cohesive streams of seawater. |
| What currents sank the Titanic? | The Labrador Current off Greenland sank the Titanic. |
| How many gyres are in the world? | There are five spread across the Indian ocean, Atlantic, and in the Pacific ocean. |
| How many in the Atlantic? | There are two in the Atlantic ocean. |
| How many in the Pacific? | There are two in the Pacific ocean. |
| How many in the Indian? | There is only one in the Indian ocean. |
| What causes ocean currents? | Wind causes waves and they continue on until disrupted by land. |
| Why is London warmer than New York even though it is further north? | The Gulf stream brings warm water to London which is influenced by the prevailing westerlies. |
Created by:
jordanh2015
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