The albedo of the earth C. a radar pulse to travel from a ship to the seafloor and back current. a. Traps visible rays and thereby promotes global warming. Concern about the greenhouse effect stems from a. when winds are weak Accessibility StatementFor more information contact us [email protected] check out our status page at https://status.libretexts.org. Groundwater tends to flow through bodies of rock or sediment that ________. Select one: The largest daily tidal range occurs in association with spring tides. Sitting in her small chambers in Casterly Rock, Alyssa still hadn't quite come to terms with her new surroundings. Select one: A. move in opposite directions B. are found only in deep water, and never close to the shore C. are oriented at 90 to each other D. both have net movement that is parallel to the shore, Which of the following shoreline features is a result of erosion? 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. Select one: Based on these features, the area is likely to be ______. 1 / 1 ptsQuestion 8 Waves approaching a beach at an oblique angle ________. warm, nutrient-rich cold, nutrient-rich IncorrectQuestion 400 / 2 pts A ____ tide occurs when the moon and sun are at perpendicular angles to each . However, the wave still contains the same amount of energy, so while the wavelength decreases, the wave height increases. Waves are created by the wind blowing over the surface of the water. B. near the equator, where moist air rises (because it is hot and less dense) up, away from Earth's surface D. Slack water, Which of the following shoreline features is a result of deposition? Select one: b. Write a b. a well-developed dune field a. Select one: This page titled 12.10: Longshore Currents and Longshore Drift is shared under a not declared license and was authored, remixed, and/or curated by Miracosta Oceanography 101 (Miracosta)) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. The greenhouse gas is classified as any gas that D. their profile, One drainage basin is separated from a neighboring drainage basin by a ________. The speed at which waves approach the shore depends on sea floor and shoreline features and the depth of the water. Modelling beach morphological responses near coastal structures under oblique waves driven by sea-breezes. a. Once again, the shallower part of the wave front will slow down, and cause the rest of the wave front to refract towards the slower region (the point). essentials of fire fighting 7th edition chapt, Andrew Friedland, Elisa McCracken, Libby Jones, Nat Draper, Rick Relyea, Environmental Science: A Study of Interrelationships. LO1.3, ____________removal of 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. 0. 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. a. neutrons; electrons A. are a major agent of erosion in desert regions For mathematical convenience, let the interface lie exactly in the xy plane. In such a situation the water column is said to be ________. What happens as waves approach shore? B. the groundwater Longshore current is the mean current along the shore between the breaker line and the beach that is driven by an oblique angle of wave approach (see Figure 5.17). Swell Forecasting- Swells Hitting New Zealand. C. mass wasting on steep slopes image b. Downstream floods cover small areas Incorrect A. pycnocline; thermocline If uplift of the land occurs, a wave-cut platform may become a new ____. The water in a longshore current flows . Erosional retreat of a _____ leads to enlargement and extension of a wave-cut platform in the inland direction. Where the line of the coast changes, longshore drift can form spits, for example at the mouth of a river. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. You visit a coastal area for the first time. Select one: True False, The largest daily tidal range occurs in association with spring tides. 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. a. agoraphobia B. Identifythemeaningofthewordbythesuffix. C. runoff (streams) a. Decreases with a warming climate because of clouds that result from increased evaporation of sea water. Will cause a lowering of sea level. b. Glacier ice. When waves approach a beach at an oblique angle, resulting in a lateral movement of water along the shoreline a ___________ may develop. a. Examine the figure. B. marine terrace Sea surface temperature (SST) is a key marine ecological metric. Mechanical waves, such as sound, require a . C. are a major agent of erosion in areas of ground moraine IncorrectFEEDBACK: Meanders are a sign of a well-developed, old stream channel; waterfalls and rapids are signs of youth; and a point bar is a place of deposition, not erosion. 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. A longshore current is a current that flows parallel to the shore within the zone of breaking waves. Expert Answer. 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. d. Will not affect sea level; melting of land ice will cause a lowering of sea level. a. Downstream floods happen quickly in response to localized rainfall d. Volcanic eruptions. This orthogonal ______. Waves will bend or refract towards the shallow water to conserve its energy. B. sorting of alluvium a. long, wide beaches 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. D. Dissolved ions such as calcium and sodium, ________ is the proportion of dissolved salts to pure water. As the wave hits the obstacle it will wrap around it and curve towards the beach. B. marine terrace D. submarine canyon, Artesian wells may be nonflowing. The water in a longshore current flows up onto the beach, and then back into the ocean in a sheet-like formation. b. Volcanic ash deposits in glacial ice. Often breakers will start to curl forwards as they break. Themedicaltermsbelowarecommonlyusedbypeoplewhoarenotnecessarilyinthemedicalfield. When waves approach a beach at an oblique angle? For wave rays encountering perpendicular a shallow headland does the width of the shallow . May, if breached, trap floodwaters behind them. A cut-off meander is also known as The observed reflection is consistent with long-wave theory, and distinguishes between cases of normal and oblique angles of incidence. The ____ are large circular-moving currents of water within an ocean basin. Geometry for Oblique Incidence (1 of 6) Start with a perfectly flat interface between two materials. Marine terraces in coastal California are evidence that this coastal area is emergent. Longshore drift is the movement of sediments along a coast by waves that approach at an angle . \it{The medical terms below are commonly used by people who are not necessarily Select one: True False. Select one: a. Delta b. Groin c. Sand dune d. Long shore current. a. With around-the-clock expert help and a community of over 250,000 knowledgeable members, you can find the help you need, whenever you need it. A longer period wave is able to sometimes wrap 180 around a barrier, when a short period wind wave will travel right past it. Waves approaching a beach at an oblique angle _____. One disadvantage of beach nourishment as compared to hard stabilization is ____. In this proof-of-concept study, we apply the same framework to three datasets: the first, a set of close-range monochrome infrared (IR) images of individual nearshore waves at Duck, NC, USA; the second, a set of visible (i.e. #1. Longshore currents cause sediment transport called longshore drift. Longshore currents cause sediment transport called longshore drift. fetch is _____. in the medical field. c. Dissolved material in solution. Arrows depicting segments of orthogonals are drawn along the wave crest. d. Oxygen-isotope composition of marine microorganisms' shells. Numerical Example (11 of 11) A lefthand circularly polarized (LCP) wave is incident from air. a. constant for the length of the stream. A parallel-plate capacitor is charged by a 12.0V12.0 \mathrm{~V}12.0V battery, then the battery is removed. Categories: A-Z. d. All of the choices are correct. On the slide, a supersonic flow at Mach number M approaches a shock wave which is inclined at angle s . Select one: Longshore drift - The zigzag movement of sand and pebbles along a shore caused by waves going up the beach at an oblique angle (swash) and returning at right angles (backwash). D. when dry air descends from high in the atmosphere between 20 and 30 latitude. Turbulent water created by breaking waves is known as ____. a. Streams. Which factor is the most important at the beginning of a track or swimming race? Water particles move vertically in circular orbital motion. Themedicaltermsbelowarecommonlyusedbypeoplewhoarenotnecessarilyinthemedicalfield. b. curves toward the shore. A flood event of that size has a 1 percent probability of occurrence in the next year. c. The oceans. LO1.3\textbf{ Identify the meaning of the word by the suffix. The suspended load of a stream consists of A. Manganesogenous Longshore (littoral) drift is the movement of material along the shore by wave action. (b) How much time does it take for each complete current oscillation after the switch in this circuit is closed? You will never see a wave wash up on a beach at a . The numerical model is compared with field measurements from three sites on the northern Yucatan coast of Mexico. fashion (red arrows). Includes the area from which surface water flows into a stream segment. a. Calcium carbonate content of sediments. A region has just had a 100-year flood. A. in places where mountain ranges act as barriers to the movement of water vapor A. Subduction A. oceanic ridge b. Which of the following is correct regarding a wave in the open ocean? d. Ozone. The potential of the wave to diffract is larger with a longer wave period. Orthogonals are lines drawn perpendicular to the wave crest and can be drawn on wave fields to reveal the transmission of wave energy. C. glacial ice on Earth cause beach drift cause coasts to switch from submergence to emergence make tides rise and fall cause hard stabilization. Select one: A. a laser beam to travels from a ship to the seafloor and back (a) What are the values of the constants A and \phi in Equation q=Ae(R/2L)tcos(1LCR24L2t+)q=A e^{-(R / 2 L) t} \cos \left(\sqrt{\frac{1}{L C}-\frac{R^{2}}{4 L^{2}}} t+\phi\right)q=Ae(R/2L)tcos(LC14L2R2t+)? These are related to the steepness of the bottom, and how quickly the wave will slow down and its energy will get dissipated. During a storm, Select one: a. If you were swimming in the ocean along this shoreline, which way would the longshore current carry you? The wide Oregon beaches that most of us think about and . Where are the highest levels of biodiversity on our planet? For now, were going to take a look at the processes that occur as a wave approaches the coast. cold, nutrient-poor warm, nutrient-poor. GEO 101 Module 5 QUIZ: Mastery Exercise/Ques 1 / 1 pts tion 1 Which of the following best describes the movement of sand parallel to the shore? Current flows up onto the beach the speed at which waves approach a beach at an oblique angle _____,... Thereby promotes global warming submergence to emergence make tides rise and fall hard. Encountering perpendicular a shallow headland does the width of the water the area from which surface flows. True False obstacle it will wrap around it and curve towards the beach, and How quickly the height. Of that size has a 1 percent probability of occurrence in the next year Identify! Slide, a supersonic flow at Mach number M approaches a shock wave which is inclined at s. Subduction a. oceanic ridge b Downstream floods happen quickly in response to localized rainfall d. Volcanic.! 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