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chapter 8 lesson 1
oceans
| Question | Answer |
|---|---|
| the continental shelf, continental slope, and continental rise are regions of what? | continental plains. |
| why do organisms that perform photosynthesis live only in the surface zone? | the surface zone receives the most sun light |
| what happens to density as depth increases in oceans? | It increases |
| what is the term for an unscrewed submersible used to explore the seafloor? | submarine |
| what are the two main types of resources on the seafloor? | minerals and energy |
| what is the measure of the mass of the dissolved solids in a mass of water? | salinity |
| what is it called when freshwater is mixed with saltwater? | brackish water |
| large, flat areas of the seafloor that extends across the deepest parts of the ocean floor are the? | abyssal plains |
| where tectonic plates collide the seafloor forms what? | trenches |
| where tectonic plates separate the seafloor forms what? | ridges |
| what is the water from a sea or an ocean that has an average salinity of 35 ppt called? | seawater |
| brackish water is polluted water mixed with seawater. | false |
| the salinity of seawater in is not constant. | true |
| salinity is a measure of the mass of dissolved solids in a mass of water. | true |
| what is the approximate temperature if water below a depth if 1,000 m? | 4 degrees Celsius |
| at what depths is the salinity of ocean water relatively constant? | 2,000 |
| how where the oceans filled? | tens of thousands of years of precipitation and possibly ice from comets and asteroids |
| what do Oceanographers use to explore the seafloor? | submersible |
| what zone receives no sunlight? | deep zone |
| which zone receives a little sunlight? | middle zone |
| which zone receives the most sunlight? | surface zone |
| as depth increases temperature does what? | decrease |
| chemical process in which light energy, water, and carbon dioxide are converted to sugar. | photosynthesis |
| to operate by hands or by mechanical means in a skillful manner. | manipulate |
| depth, temperature, salinity, density, and the amount of sunlight received is to classify what? | the ocean zones |
Created by:
johnsfai2159
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