• <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 www.vns9998.me | www.xpj16683.com | 34c35.com | www.087g.com | 678210.com | www.09xyc.com | www.28758h.com | www.202437.com | www.400131.com | 4812q.com | www.a80288.com | 4288ii.com | www.pj56i.com | k2306.com | www.k233.com | www.0659ks.com | 5651f.com | www.5049x.com | 5003oo.com | www.091628.com | 3434c.com | www.810897.com | www.k0678.com | 53206600.com | www.js18682.com | v35151.com | www.669773.com | www.79696.com | ee5443.com | www.ff4625.com | feicai0744.com | www.708609.com | www.55268j.vip | 7720776.com | www.l3065.com | 57157s.com | www.33588r.com | www.lb0044.com | 66569.com | www.680588.com | 2757a.com | www.015ac.com | www.vns4668.cc | 6002f.com | www.69999.am | www.m33678.com | 7196.com | www.369403.com | 08778.com | www.505507.com | www.27363i.com | hbs107.com | www.igcp2.com | www.8804567.com | 69444400.com | www.99714.cc | www.6491o.com | yth18.net | www.hg31118.com | 8036w.com | www.33588a.com | www.4058oo.com | h0186.com | 3122bb.com | www.52062b.com | www.4759mm.com | 3016vvv.com | www.33678gg.com | hjdc2016.com | 896606.com | www.bet73e.com | www.zdj70.com | xhby988.com | www.65707h.com | www.23111yte.com | z45638.com | www.jcai4.com | www.76188.com | yyy909.com | www.599842.com | www.68277666.com | 20771188.com | 8722oooo.com | www.7782a.com | www.450880.com | 8299138.com | www.891595.com | www.d8007.com | 8888c9.com | www.ck3578.com | www.cp505b.com | 951201.com | 0559600.com | www.9187x.com | www.bm1102.vip | yl98.cn | www.x22678.com | www.78.tt | 4018kk.com | www.599842.com | www.88325p.com | www.38200i.com | jsc19.com | www.81233f.com | www.awwv.cc | w35151.com | 1706766.com | www.50dh.cc | www.hg9689.com | 8381o.com | www.721560.com | www.3337795.com | www.63877s.com | 78112211.com | www.flff9.com | www.353560.com | feicai0599.com | 26444.com | www.js20016.com | www.2822msc.com | 88903838.com | 7599kk.com | www.972283.com | www.678js333.com | www.hg9388.org | 11ss8332.com | 3565.com | www.3188722.com | 3788ff.com | amxj365.com | www.66653q.com | www.hyzsvip.com | 2306r.com | 5906uu.com | www.hj9668.com | www.1754d.com | www.pj550000.com | 3404m.cc | hb1432.com | www.897296.com | www.85656.com | www.82799b.com | 667766d.com | 3333744.com | www.311414.com | www.yl978.com | www.9928h.com | www.yh6789.com | 5856q.com | 717jc.com | www.99fzc.com | www.7225j.com | www.3643e.com | 7249v.com | k1.z6528.com | www.422323.com | www.55238f.com | www.xfc88.com | www.28758s.com | 6594.com | 22225002.com | www.330875.com | www.61233k.com | www.351857.com | www.345311.com | www.50999k.com | www.83335k.com | mgm3242q.com | 00xpj377.com | 696.net | www.223085.com | www.87668z.com | www.bb012.com | www.pj5715.com | 97297k.com | 6175u.com | 111122ff.com | 98955y.com | www.5086j.com | www.3200.com | www.4212m.com | www.242365.com | www.6kk.com | 5589w.com | 4255ccc.com | 3467b.am | am56.cc | 365wang.com | www.530961.com | 2381rrr.com | www.17jsc.com | www.c155e.com | www.m8867.com | www.xpjdc.com | aa2267.com | hg873.com | 112i.net | 51200ll.com | 3685r.com | www.539126.com | www.98599.cc | www.61655y.com | www.862239.com | www.4996gn.com | www.jsc9558.com | www.msc51.com | www.32126g.net | 272q.net | 9995x.cc | mm33.vip | 3750.com | 0166e.com | ttt444000.com | 4636622.com | www.033916.com | www.560703.com | www.914077.com | www.hx1199.com | www.ok52.com | www.cb2188.com | www.okw7.com | www.978351.com | www.hx8866.com | www.ya939.com | www.3126r.com | www.50080k.com | www.52072d.com | www.7239c.com | www.77801q.com | www.83033d.com | www.68cc1.com | www.68682g.com | www.36166g.com | www.83560.com | www.1035n.com | www.1368q.cc | www.815266.com | www.565516.com | www.364877.com | www.youxin9.cc | 299770.com | judingbo9.com | 13222u.com | ahg5588.com | 88000.com | 1669w.com | 86226h.com | v62.com | 48611.com | e35151.com | 92958.com | www.3089e.com | www.67797o.com | www.29886k.com | www.amdc0088.com | www.50000990.com | www.w80288.com | www.1764i.com | www.yh76o.com | www.15355r.com | www.946854.com | www.399010.com | hy.cc | 90307i.com | 81366r.com | 1005.vip | 6hcc77.com | www.hg002222.com | www.444540.com | www.808888o.com | www.2021x.com | www.68993228.com | www.983888a.com | www.371680.com | t32689.net | xinvip8.com | 57157t.com | 2443d.com | www.pj7987.com | www.89hghg.com | www.509029.com | www.2021k.com | www.pj56d.com | www.909309.com | 3333904.com | 4477634.com | 4022q.com | 66300vip27.com | www.330099w.com | www.109015.com | www.07679r.com | www.71399f.com | www.763117.com | 23800w.com | 111122ee.com | 7744iii.com | www.4972ff.com | www.c44qq.com | www.46876.com | www.2632m.com | www.39500e.com | 18438hd.com | 888.cm | www.c6635.net | www.c01885.com | 22098d.com | www.56733e.com | www.725558.com | www.07679a.com | www.88ttz.com | 5622z.com | 262329.com | www.7754j.com | www.gssuu168.com | www.354331.com | www.631257.com | 3616h.com | 20160913.in | www.7830l.com | www.4446eee.com | www.12455z.com | 97297r.com | vip9923.com | www.xjs8898.com | www.76773.com | www.xj1990.com | www.278965.com | 8449yht.com | 1185456.com | www.05.bet | www.550021m.com | www.66376i.com | 0201.com | www.4938c.com | www.006785.com | www.lczg7.com | mm5144.com | TY5506.com | www.k1128.com | www.0343m.com | www.407873.com | i83377.com | www.hg02468.com | www.9b007.com | www.9818.cc | pu22pu22.com | vns300.net | www.5049r.com | www.50989k.com | 44488n.com | 500000813.com | www.1389nn.com | www.50064h.com | 2095979.com | 83086i.com | www.35252p.com | www.9818c.cc | 31325k.com | www.86611b.com | www.hg7660.com | www.00665a.com | 9288.us | r2146.com | www.6574d.com | www.975277.com | www.186371.com | 29533.com | www.js88058.com | www.46630.vip | www.599649.com | 69096c.com | www.362844.com | www.953572.com | 6hcc99.com | wnsr8824.com | www.66333666.com | www.43818s.com | 4255uu.com | 32424j.com | www.1122xpj.net | www.875957.com | qj-vip.com | www.7669h.net | www.833bbb.com | pjhunan.com | hg77740.com | www.27363n.com | www.hx1177.com | 9949i.com | www.4107v.com | www.2566y2.com | a997.com | 99151v.com | www.1168u.com | www.807735.com | 2214cc.com | www.tianbet.com | www.87096.com | yk117.com | www.29886q.com | www.85267.com | qianyi49.com | www.wst.vip | www.52062x.com | 8522hhhh.com | www.1869r.com | www.792082.com | 8901y.com | www.dfs994.com | www.776887.com | 56787pj.com | vnsr99888.com | www.456.ceo | 66300vip10.com | 99993885.com | www.63606f.com | 预览hg9695.com | www.a3a666.cc | www.4361.co | 4123oo.com | www.c27229.com | www.99788l.com | 2381u.com | www.xin8884.com | www.hw7890.com | 8159ggg.cc | www.5049a.com | www.332069.com | 9995s.cc | www.350c7.com | 6944009.com | www.u8867.com | www.64141.com | 3678ooo.com | www.67df.com | 3936m.com | www.333177.com | www.986440.com | 0332m.com | www.hv588.com | www.288472.com | 444hg.com | www.7886276.com | 6177012.com | www.hg2216.com | www.wcp777888.com | 83086t.com | www.087y.com | 8547cc.com | www.bmw0004.com | www.183065.com | www.sb8003.com | www.81520x.com | 3726r.com | www.93955d.com | 5856dd.com | www.1770500.com | www.775377.com | 0033c.cc | www.76520y.com | 93922b.com | www.4694k.com | vns335588.com | www.4449193.com | www.776511.com | 3258q.com | www.7239d.com | 01234oo.com | www.513950.com | xpjbak1.com | www.773388.com | www.055973.com | www.pjbet555.com | www.hh3890.com | 2418v.com | www.1199.am | 13111.com | www.07679s.com | yypxrht.cn | www.89599y.com | 188qq66.com | www.48234h.com | 11018l.com | www.h2272.com | www.319075.com | www.yy883.com | www.772701.com | www.586885.com | www.cly6.com | bm1397.com | www.565hc.com | 3258q.com | www.2934z.com | 9149a.com | www.5095y.com | 256777t.com | www.2109j.com | jnn003.com | www.66ffj.com | 54777.com | www.ch8234.com | www.4123mm.com | www.677397.com | www.943a28.com | www.422738.com | www.33569900.com | 44wb8.com | www.hg3988.com | 0652c.com | www.882745.com | www.ya2019w.com | 2566h7.com | www.cfcp777.com | www.206881.com | www.gh0030.com | www.99638n.com | bbb444000.com | www.20199hh.com | hrbbdyy.com | www.8805js.com | www.3978u.com | 4590bb.com | www.5981n.com | df8s.com | www.hg0423.com | www.271696.com | www.un5533.com | www.50080f.com | dzc03.com | www.4546100.com | 89892ff.com | www.37111m.com | 778074.com | www.55scweb.com | www.901172.com | 8290h.com | www.52072s.com | 45637s.com | www.4156.com | 92266J.com | www.00772l.com | 99567d.com | www.36649.com | bj0111.com | www.xpj88001.com | www.609812.com | www.033033t.com | www.65707c.com | 7605dh.com | www.zzyl61.com | 7240v.com | www.4521k.com | 7766881.com | www.mgm868005.com | 01234j.com | www.31276.com | 50020011.com | www.hc3301.com | mgm3242t.com | www.z948z.com | xx888b.com | www.697002.com | 896606.com | www.850750.com | 3007811.com | www.c44jj.com | 2229tz.com | www.9737oo.com | 53262e.com | www.69989b.com | hg0068s.com | www.07679e.com | 4488sss.com | www.535761.com | 50099w.com | www.54400h.com | zhcpbb.com | www.699by.com | www.yh77702.com | www.825799.com | www.48163.com | www.210793.com | www.88051.net | js38887.com | www.1683122l.com | ff555o.com | www.173151.com | 5856bb.com | www.js8600 | 61610524.com | www.fcyl3.com | www.309999.com | www.525059.com | www.2546m.com | wfcp111888.com | www.bet63w.com | 6487eee.com | www.yh7774.com | hy5900.com | www.591799.com | www.56569.com | 338499.com | www.331194.com | 80850l.com | www.588904.com | gc722.com | www.590761.com | www.xpj0978.com | 86811nn.com | www.2544g5.com | 6403p.com | www.66ffj.com | www.3188722.com | 3726a.com | www.n7764.com | 3775778.com | www.3479aa.com | www.365815m.com | www.178739.com | www.8511msc.com | 0886.com | www.00840z.com | www.27706.com | www.80075i.com | www.1168h.com | 38365k.com | www.ya949.com | www.ttn88.com | sandscotaicentral.cn | www.62979c.com | 55ss8331.com | www.314077.com | www.c44nn.com | 3568v.com | www.371o.cc | www.xhtd05.com | 8200com | www.0601z.com | www.lbj682.com | 8988m.com | www.bwin950.co | 59889m.com | www.186357.com | www.5bet005.com | 98955s.com | www.701498.com | www.3846j.com | 7202004.com | www.623190.com | www.9788t.com | 4255yyy.com | www.922069.com | www.073343.com | sss1915.com | www.818646.com | www.c44uu.com | jing7773.com | www.375793.com | www.222jyh.com | 2455l.com | 01885b.com | www.42070015.com | www.sjs05.com | 77606o.com | www.980879.com | www.004455.net | 0o0qi1l.com | www.8839e.com | www.tk533.com | 78808h.com | www.523121.com | www.sb5505.com | 56988oo.com | 1086.com | www.99677x.com | www.79665c.com | lh66.com | www.807835.com | www.77c668.com | 7989b.com | 7744aaa.com | www.868553.com | www.20326.com | 838388g.com | www.hh8618.com | www.89897.com | 83377d.com | 33115zz.com | www.52303x.com | www.881389.com | dzhcp3.com | 771906.com | www.xyh6003.com | www.w30226.com | 2566h7.com | www.544779.com | www.689660.com | www.67797r.com | hg1088.com | www.02022.com | www.5049p.com | xpj70069.com | 61788.com | www.849770.com | www.9997038.com | www.x552.com | 4195xx.com | bwinlll.com | bet28n.com | www.954689.com | www.55545.com | www.ag06617.com | www.88993h.com | www.517ly13.com | 38850077.com | 316z.cc | 80850t.com | www.33588l.com | www.7036fh.com | www.13555a.com | www.zjlygm.cn | 6766jj.com | 00778h.com | www.914902.com | www.106846.com | www.55155f.com | js57666.com | 5855mm.com | www.2788cai.com | www.00778o.com | www.7830k.com | 42428822.com | 22885144.com | www.596531.com | www.tai1177.com | www.6789wh.com | www.wn2058.com | 835889.com | xpj718.com | www.c1360.com | www.44118e.com | www.ra8804.com | 83086k.com | 7599ss.com | www.209875.com | www.77801c.com | www.55070d.com | www.vylc6.com | 3258y.com | d2127002.com | www.61655i.com | www.33598l.com | www.26123bb.com | www.v6964.com | chengxinbo.net | 6728.com | www.73736e.com | www.3cpb.com | www.ykdyfls.com | www.751cp55.com | www.28758i.com | 33dd8331.com | 0805e.com | 2776r.com | www.407871.com | www.09991.cc | www.90935.com | www.mhcpgw.com | www.980143.com | 3333xsj.com | 307590.com | g67890.com | 8905h.com | www.715920.com | www.68689z.com | www.32678.cc | www.888950.com | www.3459x.com | 8030n.com | 4036356.com | 38238m.com | www.41518v.com | www.861150.com | www.js02349.com | www.5189111.com | www.868681.com | www.t30226.com | 2546r.com | 36400022.com | 3846fff.com | 5856uuu.com | www.34788u.com | www.665039.com | www.3933o.cc | www.zmfqp.com | www.xpj8819.com | www.10999j.com | www.2004m.com | www.2200365.com | www.4107f.com | www.9846g.com | e2894.com | 3365.com | 550111c.com | 3644m.com | 8890823.com | 866666a.com | 4508jj.com | www.87668i.com | www.577972.com | www.976561.com | www.5522y.cc | www.50077c.com | www.89777d.com | www.578888.vip | www.88325p.com | www.9170106.com | www.glc555.com | www.bmw810.net | www.b3652.com | 20774411.com | man153.com | vic9308.com | www.361477.com | 18787h.com | www.33588l.com | www.89894c.com | www.00618x.com | www.hg7811.com | www.7415uu.com | www.js18682.com | www.2109x.com | www.50026v.com | 88535a.com | 365vip400.cc | www.js96333.com | www.22582.com | www.01bet8.com | www.dy310.com | www.580296.com | 56988a.com | 04666.com | www.156250.com | www.okok116.com | www.877579.com | www.3416w.com | 3131c.cc | 6175yy.com | 7779y.cc | www.js423.com | www.8645002.com | www.60996.cc | www.m.cp533pc.vip | 3405ww.com | 36408811.com | mg887788.com | www.797xj.com | www.07773.com | www.68365p.com | www.936150.com | 7874.gg | 32212m.com | www.77755545.com | www.45682.com | www.83993p.com | www.362322.com | 50067v.com | 9995g.cc | www.89790.com | www.0600l.cc | www.912451.com | d47479.com | bet28d.com | www.0860z.com | www.4058u.com | www.022ln.cc | biying940vip.com | JS1388n.com | www.330099s.com | www.87708d.com | www.0014q.com | 13222w.com | 3678b.com | www.617706.com | www.90j.com | www.50989g.com | lll0055.com | mhc8888.info | www.88gg940.com | www.88325d.com | www.870013.com | 80892w.com | 6601.cc | www.22076.com | www.ykylc01.com | www.055972.com | 5350l.com | www.39695k.com | www.9981331.com | www.flcb2.com | r61788.com | 3121j.com | www.1155025.com | www.0270n.com | 0652p.com | 84497755.com | www.234345.com | www.js18682.com | js75dd.com | 3559u.com | www.ylg424.com | www.75600v.com | www.244343.com | 23456.cc | www.4270pp.com | www.598282c.com | www.599309.com | 97987-3.com | www.655666a.com | www.wns00.me | www.068673.com | x3405.com | www.73999u.com | www.260655.com | 79964a.com | 00443015.com | www.hy3088.com | www.3933d.cc | 713348.com | www.10088hg.com | www.sha2299.com | www.wcp777888.com | 5504p.com | www.y22365.com | www.3a006.com | 5906zz.com | zhcpqq.com | www.bc858.cc | www.2cpb.com | 0554xc.com | www.87680i.com | www.68993226.com | www.66376e.com | 2021vvv.com | www.t9478.com | www.ascp7.com | i1458.com | www.m8867.com | www.77803s.com | 61328866.com | www.hg0056.com | www.86339o.com | 2418.com | pjanhui.com | www.bd2019c.com | www.622703.com | ylzz1115.com | www.21511x.com | www.cp8016.cc | pj3333.com | www.331suncity.net | www.5522h.cc | qpby3366.com | www.321329.com | www.71399j.com | dd44d.net | www.vip65533.com | www.87668c.com | 316c.cc | www.88837b.com | www.77802s.com | 3938pp.com | www.ao299.com | www.12015.cc | b2624.com | www.15011v.com | www.ybao4.com | 380111777.com | www.hj003.com | www.656by.com | 35222xx.com | www.www-48789.com | www.c9331.com | 866666m.com | www.515973.com | www.202901.com | 28487000.com | www.j2894.com | 3938hh.com | www.xpj2278.com | www.pj99n.com | y68com | www.wns47.com | www.cb0999.com | 85698q.com | www.8499.com | www.068673.com | 4066ll.com | www.js99938.com | p334433.com | www.530405.com | www.371e.cc | 001122332.com | www.dzj0004.com | qq365g.com | www.bb1365.com | www.7449cc.com | 67877w.com | www.hd779.com | www.292726.com | h8159.cc | www.6678579.com | hhgz1144.com | www.79111bb.com | www.449810.com | 2019q.cc | www.hg6012.com | 1483g.com | www.haomen2002.com | www.158606.com | www.888xin2.com | www.81520b.com | 67890uu.com | www.4963ww.com | 5804q.com | www.88msc.la | www.58fcw.com | 28288o.com | www.3116a.com | 6245.be | www.884477.com | www.685053.com | ca3055.com | www.986440.com | 22207x.com | www.8967p.com | 6177002.com | www.xpj3778.com | www.631279.com | 2211760.com | www.83993y.com | 3559vv.com | www.f2894.com | cabet266.com | www.cheng777.com | www.053069.com | www.j8877.com | www.c4534.com | blh0011.com | www.bj1111.com | 53262c.com | www.357116.com | 2618a.com | www.2945m.com | 1468.com | www.83008e.com | www.342977.com | www.8124f.com | www.5xcu.com | 68348.com | www.7714f.com | 51335f.com | www.97828g.vip | bllyuepu.cn | www.biying900vip.com | 9121901.com | www.90506.com | 3049a.com | www.bmw810.net | 73999x.com | www.208178.com | 39552288.com | www.xpj3666.com | www.60123a.com | www.4261199.com | www.178352.com | www.o27229.com | www.346011.com | www.4938k.com | www.731091.com |