## Presentation ~ above theme: "A wave is… a rhythmic motion that carries power through matter or space. In oceans, waves relocate through seawater…"— Presentation transcript:

You are watching: A is a rhythmic movement that carries

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3 A wave is… a rhythmic movement that carries power through issue or space. In oceans, waves move through seawater…

4 Waves resulted in by: Wind Earthquakes Gravitational force of the Moon and Sun.

5 stakes – highest point of a wave Trough – lowest point of a wave Wave elevation – vertical distance in between the crest and also the trough Wavelength – horizontal distance between two crests or two troughs Still-Water line - The level that the s if that were flat without any type of waves.

6 Wave duration - the moment it takes for two successive waves to happen a particular point. For example, the you space standing on a pier and also start a stopwatch together the stakes of a tide passes and also then avoid the stopwatch together the stakes of the next wave passes, you have actually measured the wave period. Wave Frequency - The variety of waves the pass a details point in a offered time period. Amplitude - The amplitude is equal to one-half the wave elevation or the distance from one of two people the comb or the trough to the still-water line.

7 Wavelength Wave height Crest Trough still Water Wave components

8 Wave motion When a tide passes v the ocean, separation, personal, instance water molecules relocate up and also down however they perform not relocate forward or backward. Http://www.classzone.com/books/earth_science/ terc/content/visualizations/es1604/es1604page0 1.cfm?chapter_no=visualization

9 Wave movement When a wave breaks versus the shore, the stakes outruns the trough and the comb collapses. Called a breaker.

10 Waves caused by Wind once wind blows throughout a body of water, friction causes the water to move along with the wind. Wave height depends on – 1. Wind speed 2. Distance over i m sorry the wind blows dubbed fetch 3. Size of time the wind blows

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14 ocean Tides

15 High and also Low birds

16 The rise and fall in sea level is dubbed a tide. One low-tide/high-tide bicycle takes about 12 hrs and also 25 min. Tidal selection is the distinction in ocean level between high-tide and also low-tide long wavelengths—up to 1/2 the circumference of the earth

17 What is the Tidal Range? HT = 30 ft, LT = 20 ft HT = 30 ft, LT = 20 ft HT = 20 ft, LT = 12 ft HT = 20 ft, LT = 12 ft HT = 50 ft, LT = 20 ft HT = 50 ft, LT = 20 ft

18 birds TERMS to KNOW… overwhelming tide—when water level is climbing Ebb tide—when water level is fallout’s

19 the the Moon’s “Fault” … Primary aspect that controls the rhythm and also height of the tides Primary aspect that controls the rhythm and also height that the tides 2 tidal bulges due to gravitational attraction 2 tidal bulges because of gravitational attraction next of earth closest come moon - seawater attracted towards moon. Side of planet closest come moon - seawater attracted towards moon. Opposite side - bulge created away from the moon. Opposite side - bulge created away native the moon. Time of tides is concerned the earth’s rotation, and also the rotation that the moon roughly the Earth. Time of tides is related to the earth rotation, and also the rotation the the moon around the Earth.

20 Gravitational result of the Moon Two big bulges that water type on the Earth: – –one directly throughout from the moon – –another ~ above the exact opposite side together the earth spins, the bulges follow the moon.

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23 Moon and also Centrifugal pressure Centrifugal force is same to the gravitational attraction the the Moon, however operates in opposing direction reasons an the opposite bulge on Earth’s surface away native the Moon

24 The opposing gravitational and also centrifugal forces create two tidal bulges GC C = Centrifugal ForceG = Gravitational Attraction

25 feather Tides occur at new Moon and also Full Moon phases every 14-15 days Earth, Moon, and Sun set Moon tidal bulge adds come Sun’s greater high tides lower low tides

26 Neap Tides occur at 1 st quarter and 3 rd quarter phases Earth, Moon, and also Sun at appropriate angles Moon tidal bulge subtracts indigenous Sun’s lower high tides higher low tides

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28 varieties of Tides Spring: new and full moon Neap: 1 st and also 3 rd soldier

29 species OF TIDES 1.DIURNAL TIDES: 1.DIURNAL TIDES: one high and also one low water tidal per day. Northern Gulf that Mexico and also SE Asia. Geometric connection of sun and moon to places on the Earth’s surface creates 3 different varieties of tides.

30 2. SEMI-DIURNAL TIDE: 2 high and also two short waters per tidal day. Two high and also two short waters per tidal day. Usual on Atlantic shores of the joined States and also Europe. Usual on Atlantic shores of the united States and also Europe.

31 3. Combined TIDES: two cycles daily, however the 2 high tides reach various heights and also the two low tides autumn to different levels 2 cycles daily, but the two high tides reach various heights and also the 2 low tides drop to different levels West shore of Canada and the US. West coastline of Canada and also the US.

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33 Tides roughly the globe

34 TOPEX/Poseidon Accurate an international maps the tides, deserve to now it is in predicated with an accuracy the 2cm. Data used for examine of ocean circulation. Level that accuracy essential to understand many oceanic processes.

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36 What is a tidal bore? A wall surface of water the moves up particular low-lying rivers as result of an just arrived tide.

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Form when an incoming tide rushes up a river river is flowing in the contrary direction. Tidal bore establishes a steep front slope due to river’s resistance