Need some help answering some of these questions please! 19. The deltas of all m
ID: 114067 • Letter: N
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Need some help answering some of these questions please!
19. The deltas of all major rivers have a "bird's foot" configuration, similar to the Mississippi River Delta. a. true b. false 20. Approximately what percentage of Earth's surface is covered with water? 85% 30% b, 50%, c.170% d. a, 21. The average depth of the abyssal plains below sea level is about a. 1 km b. 2.5 km c. 4.5 km d. 8 km 22. make up a majority of the ocean floor worldwide. a. Abyssal plains b. Continental rises c. Continental shelves d. Continental slopes 23. The form and topography (depth profile) of the ocean floor is termed a. orogeny (b. bathymetry c. allocthony d. aquitopography 24. Which type of coastline usually has a broader continental shelf? a., a passive continental margin b. an active continental margin 25. The shallowest portions of ocean found along the margins of continents are the a. abyssal plains b. continental rises (c. continental shelves d. continental slopes 26. Which portion of the sea floor is most steeply sloped? 27. Of these, the deepest parts of the ocean floor are 28. The Atlantic Ocean has always existed, every since the Earth formed at over 4 billion years ago. a abyssal plains b. continental shelves c. continental slopes d. continental rises a. along mid-ocean ridges b. abyssal plains c. continental slopes d. NOTCAC a true b. false 29. What percentage of marine water, on average, consists of dissolved ions ("salts")? a. 1.5% (b, 3.5% c. 5.5% d. 6.5% 30. The density of seawater increases withtemperature and-. Salinity: a. high & low b.) low & high c. high & low d. low & low 31. The Coriolis effect happens because of a. lunar gravity b Earth's rotation and shape c. plate tectonics d. NOTCAC 32. Because of the Coriolis effect, winds traveling from a pole toward the equator will turn to the a. north b. south c. east d. west 33. Hurricanes that travel north along the east coast of North America are likely follow what: a. the polar jet stream b. the sub tropical jet stream c. the gulf stream d. NOTCAC Storms generated by a steep vertical boundary between warm and cool air masses describes a a. warm b. cold c. mixed d. NOTCAC 34. front. 35. Storms generated by a warm air mass and cool air mass separated by a boundary that spreads broadly across the atmosphere describes a front. a. warm b. cold c. mixed d. NOTCAC Most hurricanes form off the West African coast and travel west toward the Americas because of the: a. Westerlies b. Gulf Stream c. Trade Winds d. Polar Vortex 36. 37. A full moon is associated with a spring tide and when the moon and sun are on the same side of Earth. (a) true b.Explanation / Answer
19)False
bird's foot configuration is characteristic of alluvial deposition in deep water. In this configuration large volumes of sediment are required to create land area; consequently, land is being lost in this delta more rapidly than it is being created
20)70%
About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers
21)4.5 km
Abyssal plain, flat seafloor area at an abyssal depth (3,000 to 6,000 m [10,000 to 20,000 feet]), generally adjacent to a continent. These submarine surfaces vary in depth only from 10 to 100 cm per kilometer of horizontal distance. Irregular in outline but generally elongate along continental margins, the larger plains are hundreds of kilometers wide and thousands of Kilongers long
22)abyssal plains
23)bathymetry
The term "bathymetry" originally referred to the ocean's depth relative to sea level, although it has come to mean “submarine topography,” or the depths and shapes of underwater terrain.
24) a passive continental margin
these are on the trailing edge of the moving continent resting on a plate. They are characterized by a broader continental shelf and more "gentle" coastline. General zones from passive to active margin include: Continent, coastline, continental shelf, continental slope and continental rise (these zones form the Continental Margin); followed by the Abyssal Plain (ocean basin), an axial rift (mid-ocean ridge); as approach the active margin (leading edge of the moving continent) there is often an oceanic trench (subduction taking place) followed by the continental slope (usually no continental rise) to a narrow continental shelf, to mountainous coastline (coastal zone)
25)Continental shelves
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea. Much of the shelves were exposed during glacial periods and interglacial periods.
26)continental shelves
27)Abyssal Plain
Located on either side of the mid-ocean ridge. It is made up of low hills and flat plains. The deepest part of the ocean floor.
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