A wave is transmission of energy through matter

فهرست عناوین اصلی در این پاورپوینت

فهرست عناوین اصلی در این پاورپوینت

● Last class we learned about currents
● You may be familiar with another type of water movement in the ocean: waves
● Understanding wave physics is important for human life (and not just for surfing)
● A wave is transmission of energy through matter
● Some important features of a wave
● There is more than one type of wave
● What is a tsunami?
● How does a wave break?
● Why is it important to know so many details about waves?
● Can you outrun a tsunami?

نوع زبان: انگلیسی حجم: 0.47 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 12 صفحه
سطح مطلب: نامشخص پسوند فایل: ppt
گروه موضوعی: زمان استخراج مطلب: 2019/06/16 12:03:36

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

wave, ., water, tsunami, wavelength, l, shallow, move, ocean, d, capillary, deepwater,

توجه: این مطلب در تاریخ 2019/06/16 12:03:36 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

https://www.st.nmfs.noaa.gov/Assets/Nemo/documents/lessons/Lesson_9/Lesson_9-Waves.ppt

در صورتی که محتوای فایل ارائه شده با عنوان مطلب سازگار نبود یا مطلب مذکور خلاف قوانین کشور بود لطفا در بخش دیدگاه (در پایین صفحه) به ما اطلاع دهید تا بعد از بررسی در کوتاه ترین زمان نسبت به حدف با اصلاح آن اقدام نماییم. جهت جستجوی پاورپوینت های بیشتر بر روی اینجا کلیک کنید.

عبارات پرتکرار و مهم در این اسلاید عبارتند از: wave, ., water, tsunami, wavelength, l, shallow, move, ocean, d, capillary, deepwater,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

lesson ۹ waves physical oceanography last class we learned about currents what two major types of currents are there what is thermohaline circulation which current moves north along the u.s. east coast from florida to north carolina deep ocean and surface. thermohaline circulation refers to global deep ocean circulation driven by differences in seawater density the gulf stream. you may be familiar with another type of water movement in the ocean waves this wave is breaking over the bow of a noaa ship today we will learn about the physical forces that cause waves to form and to break photo noaa photo http www.noaanews.noaa.gov stories۲ ۹ ۲ ۹۱۱۱۶ database.html accessed november ۲ ۱ understanding wave physics is important for human life and not just for surfing ۱. a wave is the transmission of energy through matter – in this case through water two important types of waves are deepwater and shallow water waves do you know what a tsunami is teacher’s note lead a brief discussion of student definitions and impressions of tsunamis. you may want to encourage students to think about whether a tsunami would be classified as a shallow water or deep water wave. this question is addressed further in the ppt. a wave is transmission of energy through matter when energy moves through matter like water matter moves and returns to its initial position the energy is transmitted to its adjacent surroundings – in this case adjacent water particles transmission of energy through the water moves the water particles in a circle motion known as orbital motion wave orbital motion photo navy some important features of a wave h l is the ratio of wave height to wavelength period t refers to the time it takes for the same spot on two consecutive waves to pass the same point speed l t wavelength is the distance between identical points on two waves from crest to crest crest is the highest point of the wave wave height is the distance from trough to crest trough is the lowest point of the wave teacher’s note this slide provides definitions for the important terms on the diagram as you click ahead on the slide show. photo http www.onr.navy.mil focus ocean motion waves۱.htm accessed november ۲ ۱ there is more than one type of wave note d water depth l wavelength deepwater waves occur when water depth is greater than ۱ ۲ wavelength d ۱ ۲ l shallow water waves occur when water depth is less than ۱ ۲ wavelength d ۱ ۲ l shallow and deepwater waves can occur at the same time teacher’s notes you may want to explain and demonstrate the ‘internal wave’ here explained in the teacher’s guide. an example in which shallow and deepwater waves can exist together would be tides and capillary wave. capillary waves are very small waves. think of wind blowing across still water and the small ripples that are created surface tension is the primary restoring force for these small capillary waves. tides have a wavelength up to ۱۷ km and capillary wind waves have a wavelength less than ۲ cm. using the average depth of the ocean which is ۴.۳ km ۱۴ ft source http oceanservice.noaa.gov facts oceandepth.html accessed april ۲ ۱۱ and the formulas above for tides d l ۲ meaning ۴.۳ km ۱۴ ۲ km is true making tides shallow water waves. for capillary waves d ½ l meaning ۴.۳ km . ۲ km ۲ is true making capillary waves deepwater waves. wind can create capillary waves at the same time waves produced from tidal forces are passing through thus these shallow and deepwater waves can exist together. what is a tsunami a typical tsunami wavelength is several hundred miles long as an example let’s say wavelength is ۴ miles the deepest part of the ocean is ۷ miles deep based on this information do you think a tsunami is a shallow or deep water wave what is a tsunami l ۴ miles d ۷ miles d ۱ ۲ l tsunamis are shallow water waves the ocean would have be deeper than ۲ miles on average for a tsunami to be a deep water wave a tsunami is a shallow water wave triggered by displacement of a large amount of water teacher’s note ۱. common triggers of tsunamis include earthquakes and underwater landslides associated with smaller earthquakes. how does a wave break h l ratio ۱ ۷ as a deepwater wave moves toward shore its wavelength decreases the height of the wave increases the top part of the wave moves faster than the bottom when the wave meets the ocean floor the bottom of the wave slows the faster moving top of the wave crashes over causing the wave to break. this happens as the wave depth gets closer to the wave height. h l ratio is greater than ۱ ۷ teacher’s note this slide walks the students through the mechanics of the wave break as you advance the slide show. as a wave moves towards the shore the wavelength decreases and the height increases. when the bottom of the wave strikes the shore it causes the bottom part of the wave to move more slowly than the top part. as the wave becomes much taller than it is wide with the crest of the wave moving faster than the bottom the wave becomes unstable and the crest eventually crashes over. you should stress to your students that the height to wavelength ratio at which the wave breaks is greater than ۱ ۷ this number typically comes up at the nosb . why is it important to know so many details about waves waves can be very destructive a tsunami is one type of destructive shallow water wave studying the causes and forces underlying waves can help scientists predict the timing and magnitude of these events and potentially save …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: wave, ., water, tsunami, wavelength, l, shallow, move, ocean, d, capillary, deepwater,

این فایل پاورپوینت شامل 12 اسلاید و به زبان انگلیسی و حجم آن 0.47 مگا بایت است. نوع قالب فایل ppt بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/06/16 12:03:36 استخراج شده است.

https://www.st.nmfs.noaa.gov/Assets/Nemo/documents/lessons/Lesson_9/Lesson_9-Waves.ppt

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