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science quiz #2
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| Question | Answer |
|---|---|
| what is the relationship between density and water temperature? | colder water= denser warmer water= less dense |
| What are 3 factors that affect surface currents? | Continental deflection, Coriolis effect, global winds. |
| what happens to ocean currents as they approach land. | they deflect and change directions. |
| What causes convection currents to form? | Differences in water density. |
| what causes upwellings? | Wind causes upwellings. |
| What does heat do in the formation of convection currents? | When water loses heat or cools down it will become more dense and sink to the of the ocean. |
| What causes an increase in density and results in deep ocean current? | Warm water loses energy, to it's surroundings and cools down turning into deep ocean currents. |
| What has the greatest effect on the growth of ocean life? Why? | Upwelling is extremely important to ocean life because the nutrients that are brought up to the surface supports plankton. They provide food for deep waters. |
| How does heat energy move in the global ocean? | Heat energy in warm surface currents in transferred to the earth's poles by wind. |
| What are the 3 steps that show the energy transfer that create ocean currents. | 1. The sun heats up the atmosphere. 2. Pressure differences cause wind to form. 3.surface currents form. |
| What type of currents happen when the surface water becomes more dense and sinks? Why? | Deep currents because deep currents are caused by changes in density. |
| What is an upwelling and why is it important to ocean life? | It provides nutrient rich water, It supports the life of plankton plankton is food for other sea life, It transfers matter. |
| If the region of the ocean has a large amount of salt, how would the movement of water be effected in that area? | It would be more dense, it would have more salinity, it would form a deep current. |
| Describe how ocean waves and currents transfer solar energy around the globe. | waves and currents are caused by winds, which is powered by solar energy. Ocean waves and currents transfer matter and energy by moving warmer regions of the ocean to colder regions and in this process they transfer the suns solar energy around the world. |
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tailymeows