• <var id="rhcsu"><u id="rhcsu"></u></var>
    <meter id="rhcsu"></meter><output id="rhcsu"></output>

    <code id="rhcsu"><ol id="rhcsu"></ol></code>

    <acronym id="rhcsu"></acronym>
    
    

      <dd id="rhcsu"></dd>

      歡迎來到原中小學教育資源網!

      物理《聲現象》復習課件

      課件 時間:2017-06-23 我要投稿
      【www.51cxty.com - 課件】

        下面瑞文網小編為大家提供了物理《聲現象》復習課件。

        一、聲音是什么第一章聲現象(復習)

        1、聲音是由于發聲體的______產生的。一切發聲的物體都在_____。固體、液體、氣體都可以發聲。_____停止,發聲也停止。第一章聲現象(復習)

        (注意:振動一定會發聲,但發出的聲音人不一定會聽到;如果物體不振動,是決不會發出聲音的)第一章聲現象(復習)

        2、聲音的傳播第一章聲現象(復習)

        (1)聲音的傳播需要__ __,一切固體、液體和氣體都可以作為_ ____,聲音在介質中以波的形式傳播,叫做___ __。第一章聲現象(復習)

        (2)_____ 不能傳聲。第一章聲現象(復習)

        (3)聲音在不同介質中傳播的速度不同。聲音在固體中傳播速度最快,其次是液體,氣體的傳播速度最慢。

        3、聲波能使物體振動,能粉碎小石頭,這表明聲音具有 。第一章聲現象(復習)

        二、聲音的特征

        1、聲音的三要素第一章聲現象(復習)

        (1)聲音的三要素是指聲音的___ _、_____和______。第一章聲現象(復習)

        (2)音調指聲音的_______,是由物體振動的_______決定的;響度指聲音的_____,是由物體振動的________決定的;我們能分辨不同人的聲音,依據的是聲音的________。第一章聲現象(復習)

        (3)

        聲音的特征

        響度

        音調

        音色

        影響因素

        振動的

        聲源的遠近

        振動的

        發聲體的材料、結構

        改變方法

        改變力的大小

        改變發聲體的長短、粗細、松緊

        舉例

        震耳欲聾

        脆如銀鈴

        悅耳動聽

        說明

        1、 頻率: ,單位:

        2、 振幅:振動的幅度

        2、用一把直鋼尺完成下列探究實驗:

        (1)探究聲音的響度與聲源的振幅有什么關系?

        (2)探究聲音的音調與聲源振動的頻率有什么關系?

        (1)實驗方法:將鋼尺一端放在桌面上,用手按住,另一端伸出桌面外( 相同)。第一次 撥鋼尺,使鋼尺振動發聲;第二次 撥鋼尺,使鋼尺振動發聲。

        現象:第二次比第一次的響

        結論:振幅越大, 。

        (2)實驗方法:將鋼尺一端放在桌面上,用手按住,另一端伸出桌面外(用大小相同的 撥動鋼尺)。第一次伸出的 一些,使鋼尺振動發聲,此時鋼尺振動的 ;第二次伸出的 一些,使鋼尺振動發聲,此時鋼尺振動的 。

        現象:第二次比第一次音調低

        結論:振動越慢, 。

        三、令人厭煩的噪聲

        1、噪聲的來源、危害和控制第一章聲現象(復習)

        (1)劃分聲音強弱等級的單位是_ __,用符號“dB”表示。第一章聲現象(復習)

        (2)減弱噪聲的方法有:從噪聲的_________、_________和________三個環節來防治。第一章聲現象(復習)

        2、從環境保護的角度看,凡是影響人們正常學習、工作和休息的聲音都屬于噪聲。

        四、人耳聽不見的聲音第一章聲現象(復習)

        1、由于人耳聽到聲音的頻率范圍是_ __Hz~_______Hz,在這個范圍以內的聲音稱為可聽聲。人們把頻率低于____Hz的聲音叫做__ ___,頻率高于_____Hz的叫做___ __。

        2、超聲波具有 , ,易于獲得較為集中的聲能等特點。生活中的應用:聲吶、B超圖像、超聲波清洗器、超聲波焊接器

        3、次聲波可以傳的很遠,容易 。一定強度的次聲波對人體會造成傷害。

      熱門文章
      268彩票平台268彩票主页268彩票网站268彩票官网268彩票娱乐 566777t.com | www.16181j.com | www.957588.com | 218jc.com | www.3032nn.com | 1305777.com | www.zr6668.com | www.935970.com | w99345.am | www.78680r.com | by305.com | www.9679k.com | www.8667p.com | rr3336.com | www.yh8878n.com | 6hcc88.com | www.vns9603.com | www.987957.com | 00048e.com | www.1434v.com | 1591hhh.com | www.91w.com | 6245.com | www.60688store.com | www.702309.com | 4812999.com | www.567365.tv | ctxcpyh.com | www.99vn777.com | jixiang7.com | www.rg999.com | 92659.com | www.rrrr0076.com | www.106235.com | www.0044hg.com | www.098wy.com | 2190w.com | www.818993.com | 44269999.com | www.8582ee.com | 7726hd.com | www.63606n.com | 3936x.com | www.4694i.com | 3049t.com | www.4965a.com | www.093388.com | www.boma0194.com | www.530751.com | www.700y.com | www.504833.com | www.526650.com | www.1423guo.com | www.532918.com | www.30309193.com | www.108075.com | www.hg8855.com | www.022613.com | www.006091.com | www.055520.cc | www.2846x.com | www.188727.com | www.hg0092.com | www.178135.com | www.hg0006.com | huangguanwang6.com | www.749888.com | kk3189.com | www.7188188.com | 3616f.com | www.98888js.com | 00773hh.com | www.689797.com | pp4255.com | www.ya2019e.com | 1cp055.com | www.00840s.com | 81511v.com | www.680221.com | www.0040yyy.com | 6446dd.com | www.29msxfptc.com | yk117.com | www.79095i.com | 4022e.com | www.60007j.com | 66458q.com | www.606614.com | www.pj5904.com | 22296qq.com | www.sb5504.com | 9679i.com | www.67258c.com | www.4123vv.com | www.320477.com | www.bmw9968.com | 148030.com | www.38775zz.com | 8977xx.com | 272yy.net | 38365w.com | www.js000a.com | 909263.com | www.544097.com | www.x22365.com | www.673888p.com | 3412288.com | www.954321i.com | 500000423.com | www.611506.com | www.0wdgj.com | 1775vv.com | www.557466.com | www.745955.com | 71366l.com | www.55718.com | www.b67783.com | www.pj0088.com | www.55545.com | 3222j.cc | www.55676m.com | www.71399o.com | www.5049v.com | 8040.com | www.1158c.com | www.0393901.com | 2257016.com | 99111tt.com | www.235961.com | www.7029.com | x55.am | www.22czj.com | www.626022.com | 93922k.com | www.99638f.com | www.h7788x.com | 4303.com | www.5854l.cc | www.665335.com | amjs119.com | www.6832g.com | www.hg0084.com | rh66666.com | www.35918h.com | www.yh7088.com | 33318m.com | www.7782r.com | www.88606.com | 4255s.com | www.cb2988.com | www.c1121.com | 4590ii.com | www.594877.com | www.47486.com | 1077kk.com | shanghaia18.com | www.6133.com | www.3459t.com | 2019ww.cc | www.33997r.com | www.g3838.com | 75991i.com | www.0270j.com | www.hg1787.com | 66886.com | www.799666aa.com | www.4694i.com | pppp0066.com | www.55526y.com | www.hxshlj.com | 3467j.am | www.243552.com | www.h948h.com | 6939.com | 5309y.com | www.js87882.com | www.39695p.com | 65560033.com | www.501264.com | www.56011u.com | 58801.com | pjneimenggu.com | www.sygj2.com | www.98698q.com | www.13602477523.com | 1479b.com | www.606255.com | www.06386611.com | www.88837j.com | fff67890.com | 3413366.com | www.78949h.com | www.cp505.com | www.hg635.com | 61999pp.com | www.236844.com | pj08444.com | x48q.com | www.611306.com | www.3434aaa.com | www.g1207.com | 7788xpj.com | 1331yy.com | www.937160.com | www.69989a.com | 15a46.net | www.am7588.com | www.xpjok.com | www.3459h.com | 45637j.com | 2381ee.com | www.fc78.com | 7720o.com | www.9068ii.com | 91668.com | 9964.com | www.783500.com | www.68365q.com | www.599248.com | emv3626.com | www.yh68222.com | www.138cpr.com | www.8494u.com | 3513002.com | 51oid.com | www.679957.com | www.293.com | www.79500w.com | www.j7700.com | 44oo8332.com | 6002j.com | 1665456.com | www.660665.com | www.5337933.com | www.tyc131.com | www.88837u.com | uu56988.com | 12742f.com | o72227.com | www.771219.com | www.9999bj.com | www.4828778.com | www.x99688.com | www.81866h.com | pj88dd.com | 9068z.com | tt5443.com | www.550415.com | www.16878w.com | www.68365m.com | www.5146z0.com | www.335666.com | www.4759qq.com | 55331b.com | 7893w32.com | 1665rr.com | 998dlw.com | www.558414.com | www.9818t.cc | www.37377w.com | www.47506m.com | www.55526n.com | www.betwd2.com | www.206365.com | 65005f.com | 112m.net | 36403366.com | 0343k.com | spj5566.com | 44669193.com | 9649h.com | www.424221.com | www.c705.cc | www.50026w.com | www.2418g.com | www.y8859.com | www.sha0088.com | www.615073.com | www.666478.com | www.0659ks.com | www.c4737.com | www.6060xj.com | 2846h.com | 8957a.com | 44268888.com | 99589.cc | 5135j.com | 2685.com | 82365d.com | 88304q.com | ff7742.com | 8547n.com | 57bet.cc | vns22.me | 561633.com | 4461.com | xxx5657.com | d82365.com | 00755b.com | 4488ee.com | 22296aq.com | www.55070s.com | www.50999f.com | www.hjcp7.com | qqq3405.com | www.79095s.com | www.b773776.com | www.625477.com | www.2090933.com | www.901690.com | www.3398733.com | www.57pk.cc | 28hg.net | 24007.com | www.67797l.com | www.50999u.com | www.ya2019o.com | www.512411.com | 30175500.com | 256777n.com | www.jing6664.com | www.3421s.com | www.799666aa.com | 8510.com | feicai0571.com | www.570907.com | www.0007795.com | www.a450.com | 9068q.com | hg77730.com | www.hg0818.com | www.97828b.vip | www.567630.com | 9086.com | www.888ldz.com | www.4694u.com | www.9478s.com | ee76669.com | t2490.com | www.66300e.com | www.7920s.com | www.373909.com | alpk11.com | www.8134.cc | www.7334e.com | www.igcp1.com | 0860u.com | 2350.com | www.3157g.com | www.fcff9.com | 2381b.com | 1654gg.com | www.8473h.com | www.cp8014.cc | hgw168m.com | www.e0686.com | www.16181k.com | www.cp703.vip | 267365.com | www.wxr44.com | www.9931331.com | www.810702.com | 33599vv.com | www.440567.com | www.630468.com | www.271901.com | uuu4255.com | www.vns3600.com | www.2020788.com | 22299jj.com | JS1388.com | www.44499999.com | www.9lbc.com | j77304.com | www.749msc.com | www.551108.com | 887766.com | 99111kk.com | www.58665t.com | www.c6089.com | 7722209.com | www.hongbaoy35.com | www.323535.com | 074f7.com | 1213mmm.com | www.40288j.com | www.97655e.com | 33382v.com | www.56655q.com | www.hx1181.com | 9737008.com | www.iwin168.net | www.20995.cc | 78117766.com | www.hqg88.com | www.5484e.com | 78666b.com | www.yinhe899.com | www.073wy.com | 58222a.com | www.350558.com | www.jcai1.com | 463k8.com | www.weinisirenbet.com | www.zcwf7.com | 3467t.am | www.tyc328.com | www.621351.com | 55442007.com | www.bet63t.com | www.71399e.com | 6660458.com | www.44118k.com | 365499.bet | www.28758m.com | www.8582jj.com | 61320044.com | www.15960000.com | www.fh2622.com | 51133j.com | www.19019r.com | www.81233e.com | d2649.com | www.2345678.pw | 1335h.com | www.hg4748.com | www.fcyl1.com | 50099h.com | www.0169b.com | 8827iii.com | www.vns7828.com | www.86267f.com | 0905.com | www.cp0028.com | www.082965.com | www.1869a.com | www.ky1006.com | 1166589.com | www.5504b.com | 34311.com | www.hg33711.com | www.56588.com | 3416r.com | www.2bet005.com | 20774444.com | www.742622.vip | www.675266.com | 2247dd.com | www.90555.net | 21366l.com | www.00618e.com | 0033p.cc | www.hqg88.com | www.296233.com | www.o168a.com | www.12455q.com | ssha0004.com | www.68365h.com | 6261ww.com | www.9980.la | 3156iii.com | www.489789.com | www.332092.com | www.wi222.com | www.75gcw.com | mgm3242.com | www.yun879.com | 4488cc.com | www.588870.com | 4066zz.com | www.c51jj.vip | 81509999.com | www.8146111.com | www.50024a.com | www.777444l.com | www.716726.com | www.y5578.com | www.ok95.com | hggjtg9.com | www.66fft.com | 3522gg.cc | www.5086z.com | 818132.com | www.25688p.com | 3178kk.com | www.77802l.com | 6261u.com | www.93777.com | 33382o.com | www.7714l.com | 33vv8331.com | www.7714k.com | 11005b.com | www.80075h.com | 0332x.com | www.32123k.com | yhw5.cc | www.022x.cc | 00778f.com | www.912055.com | www.yh201422.vip | www.346211.com | 1cp2.com | www.945suncity.com | 15a47.net | www.5146z7.com | 64111s.com | www.2607777.com | 992222i.com | www.169101.com | 30178844.com | www.11clf.com | www.blr0055.com | www.501349.com | www.572433.com | 500000512.com | www.1108617.com | hg2018.cc | www.3846ee.com | s5429.com | www.50026r.com | bcylc7.com | www.560721.com | www.js5859.com | 33ii8332.com | www.hg8vv.com | 8344dd.com | www.91233z.com | 4123ee.com | www.513061.com | www.hg9777.com | bet99969.com | www.5719f.com | 85698b.com | www.3890d.com | www.yh2198.com | 23800y.com | www.430578.com | 23599v.com | www.36166y.com | www.s32126.cc | kaixinbo.cc | www.98bgo.com | 9737cc.me | www.61233g.com | www.7720w.com | 29918jj.com | www.28000k.com | 3679gg.com | www.8618aa.com | www.655666f.com | 5002.am | www.k32031.com | 26668j.com | www.693930.com | www.33225.com | 97297g.com | www.997746.com | www.xpj8888.cc | 444000ddd.com | www.06820k.com | 7499822.com | www.599436.com | www.3893y.com | 44303.com | www.8816f.com | www.555pj8.cc | ule610.com | www.jzvip11.com | www.85770p.com | kk3373.com | www.7036h.com | 3416f.com | 18787h.com | www.10999r.com | 6939.so | www.196909.com | www.5049g.com | js7.ch | www.673730.com | www.939168.com | 30019tt.com | www.938627.com | www.392066.com | 67890ggg.com | www.960106.com | www.349000.com | 5219q.com | www.976550.com | www.qhxl.com | 3405eee.com | www.681968.com | www.162580.com | 5588xpj.com | www.277320.com | www.4996yn.com | le888a.com | 3189ff.com | www.e63568.com | www.pjbet555.com | 20777799.com | www.05500w.com | www.3709885.com | xpj8182.cc | www.599424.com | www.7334f.com | h47479.com | 67888b.cc | www.334777.com | www.hg3422.com | 3482g.com | www.586005.com | www.55060u.com | nyty02.com | 500000471.com | www.71399z.com | www.66667666.com | 7605u.com | www.117809.com | www.xpj9.net | www.h7788h.com | 80892a.com | www.683717.com | www.6880hh.com | www.4759ff.com | 3522e.cc | www.808482.com | www.7415nn.com | www.033033v.com | xx888u.com | www.gocp4.com | www.55545y.com | 28824g.com | 4812a.com | www.cp369.net | www.ts058.com | www.hg767676.com | 0485n.com | www.621411.com | www.63606f.com | www.10050011.com | 2214.com | p5377.com | www.yun990.com | www.6718.cc | 057360.com | w1915.com | www.fcff8.com | www.3066xx.com | www.80063355.com | 3890f.com | 876878.com | www.78949j.com | www.g456x.com | www.tyc163.com | 3412233.com | www.196067.com | www.t09738.com | www.755789.com | 256777y.com | e14666.com | www.444073.com | www.sb8357.com | www.mark428.com | 06064688.com | 58222e.com | www.43131t.com | www.96386m.com | www.cp505.com | www.4763111.com | 55323v.com | 2222150.com | www.flff7.com | www.w2894.com | www.1113890.com | 666p1.cc | 2021g.com | 18775m.com | www.2109r.com | www.30350q.com | www.pj5664.com | 0080r.com | 0332m.com | 386kze.com | www.c3714.com | www.7920t.com | www.3388v.com | www.76060z.com | 2010666.com | 5281999.c0m | www.299058.com | www.35918y.com | www.xj6005.com | www.502000.com | www.1118xj.com | 00774ww.com | huangma21.com | www.84499a.com | www.022sx.cc | www.97828w.vip | www.77731e.com | www.188tyc.com | 2190m.com | ee4255.com | zhcp21.com | www.251750.com | www.8839c.com | www.297555.com | www.58665u.com | www.2846hh.com | 2698q.com | z4389.com | 6664661.com | 7893w18.com | www.667537.com | www.66332g.com | www.7036jj.com | www.5049m.com | www.hg888995.com | www.ks299.net | 6939.so | 77260022.com | 66119vip.com | js75ff.com | www.558401.com | www.00665d.com | www.436298.com | www.4078t.com | www.5860x.com | www.2222k0.com | www.68666t.com | js5657.com | 6487jjj.com | pw9.com | 61789r.com | 85698i.com | www.338061.com | www.qmkl7.com | www.53900n.com | www.c5c55.com | www.000435.com | www.655666e.com | www.1118xj.com | 9895d.com | 3685z.com | hjcp3.com | 00773oo.com | 33567w.com | 18438b.com | 7720746.com | www.040438.com | www.576120.com | www.zg80.com | www.9149l.com | www.206065.com | www.tj58qp.com | www.86730.com | www.38138b.com | www.304902.com | www.xpj8840.com | www.899238.com | www.05125f.com | www.21365tt.com | www.pj2768.com | www.1114xj.com | 1434x.com | 403144.com | 1077iii.com | 0747i.com | blr86.com | 11683355.com | h8855.net | 032526.com | p2146.com | 87363c.com | 8159s.cc | 7605h.com | xpj8920.com | 7249b.com | r7742.com | 443636.com | 878365nn.com | 702246.com | 86811h.com | 24002.com | spj80.net | 55818x.com | 2247ee.com | 22p88.cc | pp38648.cc | www.a3a888.cc | www.7720o.com | www.0xinhao.com | www.4107e.com | www.433msc.com | www.ylzz1119.com | www.hg984.com | www.jh1188.com | www.3362msc.com | www.5966nnn.com | www.55c63.com | www.9737ee.com | www.4058i.com | www.u3410.com | www.86339c.com | www.7758.com | www.615006.com | www.29277x.com | www.ya717.com | www.843552.com | www.573667.com | www.106536.com | yabo.vip | 4066r.com | 28288gg.com | 610659.com | 7742n.com | 8290j.com | www.7435k.com | www.d4737.com | www.118893.com | www.449msc.com | www.365088.bet | www.332337.com | www.1234168.com | www.49956g.com | www.c5615.com | www.501210.com | 9649b.com | ss8159.cc | 67877w.com | 899523.com | 033n.net | www.67797a.com | www.hg6266.com | www.304081.com | www.2000b.cc | www.55238c.com | www.2408e.com | www.599439.com | vipsandsapp.com | pj8dd.com | 67890www.com | 3009a.com | www.6662558.com | www.452222.com | www.848777o.com | www.zzyl63.com | www.29400.com | www.595121.com | 1468ttt.com | 11555156.com | js92313.com | LDZ333.com | www.3215503.com | www.c5c77.com | www.hg860033.com | www.2934r.com | www.178352.com | lhc907.com | o8159.cc | 226688f.net | www.239988.com | www.9737yy.me | www.782478.com | www.309877.com | 01234mmm.com | y4389.com | 9030u.com | www.62830.com | www.klcp385.com | www.339333.cc | www.995772.com | 1288jj.com | 1288m.com | 50128e.com | www.9679j.com | www.20hga.com | www.162323.com | www.621410.com | 80032233.com | 063939.com | www.b3653.com | www.229sunbet.com | www.dd4625.com | www.980797.com | 555vn77.com | www.60123e.com | 9645hh.com | wlb555.com | www.hg0088.lv | www.6889757.com | www.456669.com | www.517075.com | 7736l.com | 3178r.com | www.55520666.com | www.704907.com | www.2934r.com | 7196n.com | 4255nnn.com | www.9374q.com | www.rcw058.com | www.yun879.com | www.196046.com | 5099jj.com | 11vn77.com | www.dd65.com | www.997286.com | www.yun879.com | www.ybao1.com | P35zz.com | 38850055.com | www.hg9940.com | www.30350a.com | www.933345.com | 8838000.com | 3434hhh.com | www.jh1188.com | www.6888779.com | www.346311.com | 9479d4.com | www.4763222.com | www.8473m.com | www.yi816.com | zunyi803.com | 2418q.com | www.zr55555.com | www.0194002.com | www.60007u.com | 3522f.cc | www.666.2222149.com | www.681183.com | www.109016.com | www.xycp98.net | www.9181.cc | 22883l.com | 3379c.com | www.188741.com | www.60108s.com | 33567i.com | jindaye88.com | www.2268222.com | www.81520s.com | 06006p.com | 55nn8332.com | www.138cpc.com | www.1555ac.com | 52688e.com | www.9846k.com | www.7bet005.com | www.867455.com | 3844ee.com | www.35359193.com | www.5719d.com | www.156050.com | yh55444.com | www.hg0075.com | www.904027.com | www.529026.com | 585886.com | www.vns7898.com | www.91779o.com | www.341011.com | 4717.com | www.095985.com | www.71233z.com | 0860x.com | www.1869l.com | www.00778o.com | www.494969.com | js909.com | www.76775j.com | www.8970.com | 422yh.com | www.pj9799.com | www.68993233.com | 656pj.com | 1156qq.com | www.c3410.com | www.040416.com | 85698u.com | www.50999h.com | www.596353.com | 5004xx.com | www.88837m.com | www.1466b.com | 876878i.com | 1705v.com | www.883399d.com | wlb22.com | 748575.com | www.73990z.com | 32424x.com | 35252p.com | www.69989c.com | 155333.com | bcrpk.com | www.12136k.com | zhcpss.com | www.9009844.com | www.bjl915.com | lixingyoulun.com | www.9321n.com | www.1434m.com | 3568mm.com | www.yinhe9507b.com | www.16065k.com | bmh988.com | www.32666e.com | www.26878c.com | 8722gggg.com | www.05044.com | www.950596.com | 11018o.com | www.50999o.com | www.136052.com | 4023d.com | www.75600y.com | ss8159.cc | www.9996vv.com | www.33112m.com | 940.net | www.138cpj.com | www.286898.com | z2306.com | www.hg194.com | 9737mm.me | www.yy6656.com | www.hm3788.com | 86811x.com | www.vns6605.com | 55797r.com | www.u32126.cc | www.50788k.com | 135868.com | www.c25.cc | bet8688.com | www.zs4444.com | www.87668w.com | m0006.com | www.662412.com | feicai0511.com | www.boma0150.com | www.81520.com | 316m.cc | www.696668.com | 3018nn.com | www.26yh76.com | www.989778.com | jjjj009.com | www.1764f.com | 38244t.com | www.7335rr.com | www.106316.com | www.amh50.com | www.29277c.com | 9964f.com | www.4546100.com | yh996.vip | www.kj4949.com | www.287916.com | www.hg6080.com | www.33068.cc | 6261ii.com | www.07679v.com | 2359911.com | www.b456x.com | vip31446.com | www.0907ww.com | www.674007.com | 2618h.com | www.00840s.com | 6261pp.com | www.jsc2020.com | 0033buyu.com | www.5981b.com | bbb5682.com | www.d9478.com | 7792o.com |