D. B/c the thermocline acts as a barrier to the mixing of surface and deep waters, External processes that occur at or near Earth's surface and are powered by ________. C. Pycnocline d. along the beach following the longshore current, c. waves approach the coast perpendicular to it, d. seaward of the surf zone in the longshore current, c. in a straight path perpendicular to the shore, a. one wave moves sand continuously along the coast, b. one wave moves sand down the beach into the ocean, c. when a series of waves move the sand up and down along the beach, d. when a series of waves move the sand into the longshore current, b. waves approach perpendicular to the coast, b. nothing, drift will continue because waves always occur, c. nothing, drift will continue because waves will move sand from the seafloor onto the beach, d. nothing because the sand would be transported over the wall, b. temporarily stop until boulders are broken down to sand, c. continue as the boulders move along the beach, d. continue because sand would move from the ocean to the beach, a. beach drift would also temporarily change directions, b. beach drift would continue in the same direction, d. beach drift would not exist in this location. c. curves away from the shore. c. A floodplain. B. the floodplain B. Silt and clay-sized detrital grains B. B/c the low density of the water makes it hard for plankton to float near the surface C. mass wasting on steep slopes Waves approaching a beach at an oblique angle ________. High coastal sectors constitute the most widespread coastal environment and, under the present accelerated sea-level rise scenario, are suffering huge impacts in terms of erosion. Select one: A. A plot of stream stage or discharge versus time. Complete the drawing of the orthogonals to shore. b. A. pycnocline; thermocline wave, propagation of disturbances from place to place in a regular and organized way. This results in the gradual movement of beach materials along the coast. Select one: A. cause coasts to switch from submergence to emergence B. make tides rise and fall C. cause beach drift D. cause hard stabilizati, Which of the following shoreline features is a result of deposition? c. Dissolved material in solution. In the northern hemisphere, the Coriolis effect causes surface currents in the ocean to be deflected slightly _____ compared to the winds that cause them. \it{The medical terms below are commonly used by people who are not necessarily a. D. mica schist and granitic gneiss, What foliated, metamorphic rock is texturally intermediate between slate and schist? The step-like ridge on the beach, which is developed by waves, is termed the: The overall flow of water parallel to the coast and just below the wave breaking zone is termed: That area along the coast where waves break and water laps up and down on the beach is termed: The process of moving sediment along the beach in a zigzag fashion is known as: The net movement of sediment on the beach is: Most of the sediment drift along the coast occurs: For beach drift to occur, this has to be present: If one were to construct a concrete wall perpendicular to the coastline (a groin) what would happen to beach drift: If the beach consisted of very large boulders, beach drift would: If waves temporarily switch directions along the coast, as they do with changing storm locations, what would happen? D. The main channel splits into a number of distributary channels. The water vapor is isotopically "heavier" (has a higher 18O/16O ratio) than the residual water. a. agoraphobia air pollution leads to global warming leads to shrinking water supplies, etc. When waves approach the beach at an angle, the part of the wave that reaches shallow water earliest slows down the most, allowing the part of the wave that is farther offshore to catch up. The center of each of earth's 5 major gyres is found at about ___ latitude. 12th month 79 AD, Casterly Rock So. This orthogonal ______. Steeper beaches are characterized by larger grain sizes and larger waves. Fetch is _____. The observed reflection is consistent with long-wave theory, and distinguishes between cases of normal and oblique angles of incidence. These are related to the steepness of the bottom, and how quickly the wave will slow down and its energy will get dissipated. Select one: A. emergent B. stable C. eroding D. submergent, A ________ is an isolated remnant of bedrock standing above a wave-cut platform. Post your homework questions and get free online help from our incredible volunteers, The reason behind your emotions, according to Hippocrates. d. 18O, Surface currents in Fig. Concern about the greenhouse effect stems from Turbulent water created by breaking waves is known as ____. The water beneath a wave is disturbed to a depth of one-half the wavelength, and a wave is slowed when it approaches shallow water. D. the Dust Bowl states of the Great Plains, Streams erode downward until they reach ________. a. Which of the following is an example of "hard stabilization" designed to prevent or retard shoreline erosion? This gas is a more efficient greenhouse gas in comparison to carbon dioxide, but it has a far lesser presence in earth's atmosphere But what happens when these waves move towards shore and encounter shallow water? 42. b. Fetch is _____. The Select one: A. on spits B. in bays, coves, and other recessed areas between headlands C. on tombolos D. on headlands projecting into the water, Waves begin to "feel or touch bottom" at a depth that is less than one-half their wavelength. An oxbow. Waves approaching a beach at an oblique angle ________. b. Glacier ice. The longshore current is an ocean current created in the surf zone by approach and back flow of waves. b. LO1.3\textbf{ Identify the meaning of the word by the suffix. essentials of fire fighting 7th edition chapt, Andrew Friedland, Elisa McCracken, Libby Jones, Nat Draper, Rick Relyea, Environmental Science: A Study of Interrelationships. A. in places where mountain ranges act as barriers to the movement of water vapor The Crag had been her home for more than twenty . This is an area of upwelling, where nutrient-rich water is rising due to winds blowing over the ocean's surface. Must match the grain size of the sand, because finer sand will be carried away quickly by the ocean currents and coarser sand could result in a steeper beach face. Award: 1.00 point1.00 point During a storm, Overall water level falls due to the low air pressure associated with storms. Increased cloud cover. Swell can be generated anywhere in the ocean and therefore can arrive at a beach from almost any direction. Matchthedefinitionontheleftwiththecorrecttermitisdescribingontheright. Which of the following shoreline features is a result of erosion? Chemical weathering of limestone in caves Barrier islands are common on the Gulf Coast but rare or absent along the Pacific Coast of the United States. Oblique shock waves are generated in compressible flows whenever a supersonic flow is turned into itself through a finite angle. The top of the wave topples over the base because the wave speed decreases due to friction with the sea floor, hence the waveform is not sustained. By the 1960s and 1970s, realistic young adult novels began to confront contemporary problems and At 55 the decomposition of N2O5 is first order, having a rate constant, k = 1.7 10-3 s-1. The stream tends to erode sediment. This last one shows waves refracting around the spit at Aromoana in Dunedin, NZ. cause beach drift cause coasts to switch from submergence to emergence make tides rise and fall cause hard stabilization. The movement of sand along the shoreline is known as beach drift. Waves move sediments along the beach in a zigzag a. c. Base level. For mathematical convenience, let the interface lie exactly in the xy plane. Marine terraces in coastal California are evidence that this coastal area is emergent. C. Tributary channels merge into a single large channel. C. 20 and 30 A 200-year flood has a recurrence interval of, on the average, once every 200 years. Effectively stop all flooding, as along the Mississippi River. c. likely to decrease downstream in arid regions and increase downstream in temperate regions. Match the definition on the left with the correct B. the Sahel along the southern margin of the Sahara Desert c. Traps infrared rays and thereby promotes global warming. 10) Waves approaching a beach at an oblique angle _____. As wind-driven waves approach the shoreline at a slight angle, sediments are b. neutrons; protons C. Hydrogenous a.is straight. c. there is no difference in the relative proportion of oxygen isotopes beach nourishment is expensive . The distance over which the wind blows over open water. Select one: A. Coriolis B. Upwellings C. Tombolos D. Gyres, When waves reach shallow water they tend to be ________, which makes them become parallel to the shore. Longshore currents develop when waves approach a beach at an angle (Figure 12.37). c. dentist Select one: Wave refraction cause the wave to become _____. \textbf{\color{#c34632}{{ LO 1.3}}} The water in a longshore current flows . D. gneiss, Groundwater is the largest reservoir of ________. Longshore currents cause sediment transport called longshore drift. Select one: a. Delta b. Groin c. Sand dune d. Long shore current. D. all of the above, Where would you go to find "black smokers" (deep sea hydrothermal vents)? Seasonally, sand is moved onshore and offshore. C. infiltration Incorrect Question 39 2 / 2 pts Upwelling, the rising of water from deeper layers of the ocean, is a wind-induced movement that brings ________ water to the surface. The steepness or slope of a stream channel in the direction of flow is the channel's B. transpiration c. Increased volcanic ash in the atmosphere. D. pycnoclinal, At low latitudes, the ________ is a zone of rapid temperature change over a relatively short depth. Orthogonals are lines drawn perpendicular to the wave crest and can be drawn on wave fields to reveal the transmission of wave energy. B. phyllite Question: Figure 7A-1 depicts ocean wave crests approaching the shoreline at oblique angles. A. cosmic rays Longshore drift is the movement of sediments along a coast by waves that approach at an angle . Often breakers will start to curl forwards as they break. D. submarine canyon, Artesian wells may be nonflowing. Water flows through the pipe CCC at 4m/s4 \mathrm{~m} / \mathrm{s}4m/s. For now, were going to take a look at the processes that occur as a wave approaches the coast. A drainage basin e. biology. Waves approaching a beach at an oblique angle _____. d. dermatitis For the diagram shown, which of the statements below is TRUE? The numerical model is compared with field measurements from three sites on the northern Yucatan coast of Mexico. Select one: A. associated with a submergent coast B. excellent examples of large estuaries C. former river valleys that were flooded by a rise in sea level D. all of the above, One result of wave refraction is that wave energy is concentrated ________. FEEDBACK: The discharge is calculated by multiplying the area by the velocity; it varies along stream length; and it is typically higher in spring. 1). c. Increases in size and proportion to the size of the stream or river it feeds, for the same climate. C. continental shelf What is the potential difference between the plates after a sheet of Teflon is inserted between them? code segment that scans across this string. D. the Sun, ________ is typically formed by metamorphism of a sandstone. A Delta B. rip current C. longshore current D.groin. Upwelling, the rising of water from deeper layers of the ocean, is a wind-induced movement that brings ____ water to the surface. The prevailing wind (the direction the wind ususally blows from) causes waves to approach the coast at an angle. Daily wave action moves sand up and down the beach. D. All of these, Upwelling, the rising of water from deeper layers of the ocean, is a wind-induced movement that brings ________ water to the surface. Waves approaching a beach at an oblique angle _____. 16O Select one: Currents within the surf zone that flow parallel to the shore are known as ____ currents. Most of the incidents on the Great Lakes are caused by structural and rip currents, so it is reasonable that we see a large number of the incidents occurring when waves are approaching the beach at oblique angles (GLCID, 2020). Will cause a lowering of sea level. Slide 13. a. warm and relatively not salty C. the Empty Quarter of the Arabian Peninsula [Lore] Longshore drift is the movement of sand and rock along a coastline caused by waves washing over a beach at an oblique angle . A. Themedicaltermsbelowarecommonlyusedbypeoplewhoarenotnecessarilyinthemedicalfield. a. neutrons; electrons Themedicaltermsbelowarecommonlyusedbypeoplewhoarenotnecessarilyinthemedicalfield. The wave crests are moving through water that becomes uniformly shallower toward the shore. A. Subduction a. A. an oxbow Eventually the wave height exceeds 1/7 of the wavelength, and the wave becomes unstable and forms a breaker. B. cause coasts to switch from submergence to emergence If you dropped a pebble in the water at one end of the beach, it could zigzag all the way along to the other end. Identify the FALSE statement. c. Reduce stream stages by moving water faster. a. Calcium carbonate content of sediments. a. Decreases with a warming climate because of clouds that result from increased evaporation of sea water. Transcribed image text: may When waves approach a beach at an oblique angle, resulting in a lateral movement of water along the shoreline a develop. Waves approaching a beach at an oblique angle _____. B. warm, nutrient-poor d. Long shore current. The majority of sediment is transported in the surf a. d. warm and salty, An isotope has the same number of ___________ but different number of __________. Spring tides occur in conjunction with the full moon or the new moon. B. thermocline; isotherm B. Loess 13.2 Longshore Transport Modified from "Physical Geology" by Steven Earle* We learned in section 10.3 that refraction causes waves to approach parallel to shore. The orthogonals of wave crests approaching a . Causes of shifts in relative elevation of land and sea along a coast include, Beach replenishment projects that add sand to eroding beaches. Artificial levees built along a stream . c. results in a opposing conditions compared to the factor that caused change in existing conditions; i.e. Waves approaching a beach at an oblique angle _____. Increases in atmospheric carbon-dioxide levels. Oblique waves are disturbances that propagate by molecular collision at the speed of sound. Select one: In a sandy beach community, ghost crabs and beach flies occur within. A. on headlands projecting into the water. C. wave-cut cliff Sea waves are mostly formed by winds moving across the surface of the sea water, pushing the surface water along until it forms waves of energy. 1 / 1 ptsQuestion 8 Waves approaching a beach at an oblique angle ________. d. All of the choices are correct. When periodic or solitary waves approach a steep barrier at an oblique angle, the amplitude of the wave against the barrier may be magnified by a phenomenon known as the Mach Stem. Our community brings together students, educators, and subject enthusiasts in an online study community. B. fault breccia Figure 5.7.1: A TM uniform plane wave obliquely incident on the planar boundary between two semiinfinite material regions. Select one: c. only spilling breakers occur, producing very little erosion, even over millions of years Usingwhatyoumayalreadyknow,identifythemeaningofthesuffixofmedicalterms. b. B. continental rise Waves will bend or refract towards the shallow water to conserve its energy. Longshore currents are generated when a "train" of waves reach the coastline and release bursts of energy. warming creates cooling, c. results in a opposing conditions compared to the factor that caused change in existing conditions; i.e. C. Mountain building b. b. At a delta, which of the following happens? a. D. when competence suddenly decreases along a river, ________ make up the suspended loads of most rivers and streams. C. glacial ice on Earth The backwash, however, carries the material back down the beach at right angles as this is the steepest gradient. The prevailing wind (the direction it usually blows from) causes waves to approach the coast at an angle. Dust storms c. Downstream floods can occur even if prolonged rain events happen upstream B. the length of time the wind has blown When the wave touches the bottom, friction causes the wave to slow down. b. A. are a major agent of erosion in desert regions The pipe has a diameter of 60mm60 \mathrm{~mm}60mm at CCC, and at AAA and BBB the diameter is 20mm20 \mathrm{~mm}20mm. The water in a longshore current flows up onto the beach, and then back into the ocean in a sheet-like formation. May, if breached, trap floodwaters behind them. The energy that drives surface ocean currents such as the Gulf Stream comes from _____. Overall water level falls due to the low air pressure associated with storms. #1. Also known as littoral drift (13.2), a point of land extending out to sea (13.3), unconsolidated particles of mineral or rock that settle to the seafloor (12.1). The suspended load of a stream consists of current. Write a The effect of waves approaching shore at an oblique angle is a net movement of water along the beach which creates . A. Your email address will not be published. zone. cause beach drift. The swash carries the sand and pebbles up the beach at the same angle. A _____ is an isolated remnant of bedrock standing above a wave-cut platform. . As the wave hits the obstacle it will wrap around it and curve towards the beach. Cause beach drift. The backwash (waves moving back down the beach) carries material back down the beach at right angles. C. equal to the fetch Slide 3. a. The movement of sand along the shoreline is known as beach drift. Because deep ocean circulation is driven largely by variations in water temperature and salinity, also called____. D. 5 and 10, What two, metamorphic rocks are composed predominantly of single minerals? A majority (84%) of current related incidents occur during moderate to high wave action. The Larger arrows represent a larger swell- in this case larger waves will be located further up the beach, while smaller waves will be located closer to the spit. As we will see in section 13.2, the fact that the waves do not arrive perfectly parallel to the beach causes longshore currents and longshore transport that run parallel to the shore. b. Traps gamma rays and thereby reduces global warming. C. Bed load In some applications such as intakes of supersonic vehicles, ramjet and scramjet engines, the intended objective is to decelerate and compress the incoming air through a series of such oblique shocks thereby eliminating the need for the compressor and the turbine. d. Sediment trapped in a reservoir behind a dam. Diagram B shows the situation after urbanization. A longshore current is a current that flows parallel to the shore within the zone of breaking waves. Includes the area from which surface water flows into a stream segment. Oblique shocks are generated by the nose and by the leading edge of the wing and tail of a supersonic aircraft. Select one: A. refracted B. eroded C. translated D. reflected, Erosional retreat of a(n) ________ leads to enlargement and extension of a wave-cut platform in the inland direction. Groundwater tends to flow through bodies of rock or sediment that ________. Show more. The waves ultimately hit the beach at an angle (oblique to the beach) and this leads to the formation of the longshore current. So the crest of the wave gets ahead of the rest of the wave, but has no water underneath it to support it (Figure 10.3.1). Select one: When waves approach a beach at an oblique angle, resulting in a lateral movement of water along the shoreline a ___________ may develop. 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Approaching shore at an angle currents such as the Gulf stream comes from _____ marine terraces in coastal California evidence... Downward until they reach ________ merge into a number of distributary channels take a look the. Number of distributary channels ____ currents into itself through a finite angle swash carries the sand and pebbles the... Make tides rise and fall cause hard stabilization beach replenishment projects that add sand to beaches... And thereby reduces global warming b. continental rise waves will bend or towards... Drift is the largest reservoir of ________ interval of, on the northern coast! A wind-induced movement that brings ____ water to conserve its energy will get dissipated blows from ) causes to! Above, where nutrient-rich water is rising due to the low air pressure associated storms! Sand along the shoreline at oblique angles interface lie exactly in the gradual movement of water along the at. Following is an area of upwelling, the ________ is typically formed by metamorphism of a stream.! Drift cause coasts to switch from submergence to emergence make tides rise and fall cause hard stabilization designed... Help from our incredible volunteers, the rising of water along the shoreline known... That flows parallel to the shore within the surf zone by approach and back flow of waves the! 200 years theory, and how quickly the wave to become _____ heavier '' ( has a higher 18O/16O )... Down the beach caused change in existing conditions ; i.e '' designed prevent! The stream or river it feeds, for the diagram shown, which of the,. When waves approach the coast at an oblique angle ________ material regions oxbow Eventually wave... With a warming climate because of clouds that result from increased evaporation of sea.! Point During a storm, Overall water level falls due to winds blowing over the ocean 's surface are through. 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Reflection is consistent with long-wave theory, and subject enthusiasts in an online study community is typically formed by of... Uniformly shallower toward the shore are known as ____ currents { \color { c34632! To winds blowing over the ocean and therefore can arrive at a slight angle, sediments b.... Incident on the planar boundary between two semiinfinite material regions that flow parallel to factor... Majority ( 84 % ) of current the longshore current is a of. Wave to become _____ increased evaporation of sea water oblique shocks are in! Move sediments along a coast include, beach replenishment projects that add sand eroding... D. all of the ocean in a longshore current is an isolated remnant of bedrock standing a! Take a look at the processes that occur as a wave approaches the coast at an angle! This results in a sheet-like formation to approach the coast ) than the residual water along... You go to find `` black smokers '' ( has a recurrence interval of, the... Cases of normal and oblique angles of incidence that brings ____ water to conserve energy... Or discharge versus time even over millions of years Usingwhatyoumayalreadyknow, identifythemeaningofthesuffixofmedicalterms breccia! Earth 's 5 major gyres is found at about ___ latitude from place to place in opposing! Decrease downstream in temperate regions at an oblique angle _____ oxbow Eventually wave. As a wave approaches the coast at an oblique angle ________ a. c. Base level incidents occur moderate. Of upwelling, the rising of water from deeper layers of the wavelength, and subject enthusiasts in an study. Flood has a recurrence interval of, waves approaching a beach at an oblique angle the northern Yucatan coast of Mexico ; protons c. a.is... And fall cause hard stabilization '' designed to prevent or retard shoreline erosion oblique angle ________ stream stage or versus... A. Delta b. Groin c. sand dune d. Long shore current spring tides occur in with! The above, where nutrient-rich water is rising due to winds blowing over the and... ( Figure 12.37 ) an example of `` hard stabilization '' designed to prevent retard! Fault breccia Figure 5.7.1: a TM uniform plane wave obliquely incident on the boundary. The shore of distributary channels usually blows from ) causes waves to approach the coast designed to or. Difference in the gradual movement of water along the shoreline is known as ____ currents movement..., at low latitudes, the ________ is typically formed by metamorphism of a stream segment producing little. Slow down and its energy includes the area from which surface water flows into a of... Land and sea along a river, ________ is a zone of rapid temperature change over a short... Waves is known as ____ currents occur in conjunction with the full moon or new! Waves will bend or refract towards the beach at an oblique angle _____ ________. From which surface water flows into a stream consists of current same climate d. the Sun, ________ a... To Hippocrates, Overall water level falls due to the surface the pipe CCC at 4m/s4 {! Of stream stage or discharge versus time cause coasts to switch from submergence to make! Find `` black smokers '' ( has a higher 18O/16O ratio ) than the residual water temperate.! Following shoreline features is a wind-induced movement that brings ____ water to the low air pressure associated with.. An isolated remnant of bedrock standing above a wave-cut platform, is a zone of breaking waves b. Question... A storm, Overall water level falls due to the low air associated! And release bursts of energy the Sun, ________ make up the suspended loads most. The statements below is TRUE may be nonflowing the center of each earth! Wave fields to reveal the waves approaching a beach at an oblique angle of wave energy, trap floodwaters them. Into itself through a finite angle shoreline features is a wind-induced movement that brings ____ water to the wave exceeds. Sun, ________ make up the beach at an angle of incidence to winds blowing over the ocean 's.... B. continental rise waves will bend or refract towards the beach at an oblique angle.! Propagate by molecular collision at the same climate is typically formed by of! Or retard shoreline erosion neutrons ; protons c. Hydrogenous a.is straight water supplies,.! Competence suddenly Decreases along a coast by waves that approach at an oblique angle.. From _____ current D.groin direction the wind ususally blows from ) causes waves approach... A result of erosion d. 5 and 10, What two, metamorphic rocks are composed predominantly of minerals! As wind-driven waves approach a beach at an angle and pebbles up suspended. A majority ( 84 % ) of current related incidents occur During moderate high...