[err:数据源标签'PE.DataSource id="cone" datasource="资料_内容页" itemId="126412" xslt="true" '返回数据错,原因:名称不能以“ ”字符(十六进制值 0x3000)开头。 行 21,位置 137。,源码:1264123
<meta http-equiv="refresh" content="0;url=/Item/126411.aspx" />
/Item/126411.aspx
<meta http-equiv="refresh" content="0;url=/Item/126411.aspx" />
17032020年春北师大版八年级下册物理教案:8.6 物体的浮沉条件(附当堂检测题及备课参考资料)318.50KB318.50Bdocczwlzx王丽czwlzx/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg
<script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?id=126412"></script>
<script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=dayhits&id=126412"></script>
<script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=weekhits&id=126412"></script>
<script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=monthhits&id=126412"></script>
<script language="JavaScript" type="text/JavaScript" src="/Common/GetBrowseTimes.aspx?id=126412"></script>
<img src="/images/star5.jpg" />
王丽
0
2020年春北师大版八年级下册物理教案,物体的浮沉条件2020年03月01日/UploadFiles/nopic.gif
播放《潜水艇(动画版)》.【课堂探究】 1.物体的浮沉条件观察思考并阅读教材,思考下列问题(1)浸没在水中的物播放《潜水艇(动画版)》.【课堂探究】 1.物体的浮沉条件观察思考并阅读教材,思考下列问题(1)浸没在水中的物体,受到 竖直向下 的重力G和 竖直向上 的浮力F浮,这两个力的 合力 决定着物体的沉浮. (2)物体的浮沉条件:浸没在液体中的物体当F浮 < G时,物体下沉 当F浮 = G时,物体悬浮 当F浮 > G时,物体上浮 (3)浸没在液体中的实心物体,物体的浮沉决定于物体的密度与液体密度的关系当ρ液 < ρ物时,物体下沉 当ρ液 = ρ物时,物体悬浮 当ρ液 > ρ物时,物体上浮 2.浮沉条件的应用[来源:学。科。网](1)轮船和潜水艇结合图843,844,845阅读教材,并观察老师做的演示实验,完成下面各题①两次鞋油袋所受的重力G甲和G乙的大小关系是G
【内容简介】播放《潜水艇(动画版)》.【课堂探究】 1.物体的浮沉条件观察思考并阅读教材,思考下列问题(1)浸没在水中的物体,受到 竖直向下 的重力G和 竖直向上 的浮力F浮,这两个力的 合力 决定着物体的沉浮. (2)物体的浮沉条件:浸没在液体中的物体当F浮 < G时,物体下沉 当F浮 = G时,物体悬浮 当F浮 > G时,物体上浮 (3)浸没在液体中的实心物体,物体的浮沉决定于物体的密度与液体密度的关系当ρ液 < ρ物时,物体下沉 当ρ液 = ρ物时,物体悬浮 当ρ液 > ρ物时,物体上浮 2.浮沉条件的应用[来源:学。科。网](1)轮船和潜水艇结合图843,844,845阅读教材,并观察老师做的演示实验,完成下面各题①两次鞋油袋所受的重力G甲和G乙的大小关系是G甲 = G乙;两次排开的水的体积V甲和V乙的大小关系是V甲 < V乙;两次所受的浮力F甲和F乙的大小关系是F甲 < F乙. ②轮船的原理:用密度大于水的材料制成能够浮在水面上的物体,可以把它做成 空心 的,以使它能 排开更多的水 ,受到更大的浮力. ③潜水艇是怎样实现上浮、下潜和悬浮的?[来源:Z,xx,k.Com] 通过调节潜水艇水箱中储水量,从而改变自身重力 . 播放《潜水艇(动画版)》.【课堂探究】 1.物体的浮沉条件观察思考并阅读教材,思考下列问题(1)浸没在水中的物体,受到 竖直向下 的重力G和 竖直向上 的浮力F浮,
<p><em>所属专辑:</em>
<a href='/Special_264/Index.aspx' target='_blank'>
2020年春北师大版八年级下册物理全套教案(附当堂检测题及备课参考资料)
</a>
</p>
下载地址1|ja/2020/3/202031103835.doc<p style="line-height:21px"><span style="font-size:14px;font-family:宋体">播放《潜水艇(动画版)》.</span></p><p style="line-height:24px"><span style="font-size:16px;font-family:宋体">【课堂探究】 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">1.</span><span style="font-size:14px;font-family:宋体">物体的浮沉条件</span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">观察思考并阅读教材,思考下列问题</span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">(1)</span><span style="font-size:14px;font-family:宋体">浸没在水中的物体,受到<span style="text-decoration:underline;"> 竖直向下 </span>的重力G和<span style="text-decoration:underline;"> 竖直向上 </span>的浮力F<sub>浮</sub>,这两个力的<span style="text-decoration:underline;"> 合力 </span>决定着物体的沉浮. </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">(2)</span><span style="font-size:14px;font-family:宋体">物体的浮沉条件:</span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">浸没在液体中的物体</span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当F<sub>浮</sub><span style="text-decoration:underline;"> < </span>G时,物体下沉 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当F<sub>浮</sub><span style="text-decoration:underline;"> = </span>G时,物体悬浮 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当F<sub>浮</sub><span style="text-decoration:underline;"> > </span>G时,物体上浮 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">(3)</span><span style="font-size:14px;font-family:宋体">浸没在液体中的实心物体,物体的浮沉决定于物体的密度与液体密度的关系</span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当ρ<sub>液</sub><span style="text-decoration:underline;"> < </span>ρ<sub>物</sub>时,物体下沉 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当ρ<sub>液</sub><span style="text-decoration:underline;"> = </span>ρ<sub>物</sub>时,物体悬浮 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">当ρ<sub>液</sub><span style="text-decoration:underline;"> > </span>ρ<sub>物</sub>时,物体上浮 </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">2.</span><span style="font-size:14px;font-family:宋体">浮沉条件的应用</span><span style="font-size:3px;font-family:宋体;color:white">[</span><span style="font-size:3px;font-family:宋体;color:white">来源:学。科。网]</span></p><p><span style="font-size:14px;font-family:宋体">(1)</span><span style="font-size:14px;font-family:宋体">轮船和潜水艇</span></p><p><span style="font-size:14px;font-family:宋体">结合图8<img width="8" height="6" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" alt="学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!" style="background:url(http://www.czwlzx.com/UEditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd" />43,8<img width="8" height="6" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" alt="学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!" style="background:url(http://www.czwlzx.com/UEditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd" />44,8<img width="8" height="6" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" alt="学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!" style="background:url(http://www.czwlzx.com/UEditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd" />45阅读教材,并观察老师做的演示实验,完成下面各题</span></p><p><span style="font-size:14px;font-family:宋体">①两次鞋油袋所受的重力G<sub>甲</sub>和G<sub>乙</sub>的大小关系是G<sub>甲</sub><span style="text-decoration:underline;"> = </span>G<sub>乙</sub>;两次排开的水的体积V<sub>甲</sub>和V<sub>乙</sub>的大小关系是V<sub>甲</sub><span style="text-decoration:underline;"> < </span>V<sub>乙</sub>;两次所受的浮力F<sub>甲</sub>和F<sub>乙</sub>的大小关系是F<sub>甲</sub><span style="text-decoration:underline;"> < </span>F<sub>乙</sub>. </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">②轮船的原理:用密度大于水的材料制成能够浮在水面上的物体,可以把它做成<span style="text-decoration:underline;"> 空心 </span>的,以使它能<span style="text-decoration:underline;"> 排开更多的水 </span>,受到更大的浮力. </span></p><p style="line-height:21px"><span style="font-size:14px;font-family:宋体">③潜水艇是怎样实现上浮、下潜和悬浮的?</span><span style="font-size:3px;font-family:宋体;color:white">[</span><span style="font-size:3px;font-family:宋体;color:white">来源:Z,xx,k.Com]</span></p><p style="line-height:21px"><span style="text-decoration:underline;"><span style="font-size:14px;font-family:宋体"> 通<img width="2" height="2" src="http://www.czwlzx.com/UEditor/themes/default/images/spacer.gif" alt="学科网(www.zxxk.com)--教育资源门户,提供试卷、教案、课件、论文、素材及各类教学资源下载,还有大量而丰富的教学相关资讯!" style="background:url(http://www.czwlzx.com/UEditor/themes/default/images/word.gif) no-repeat center center;border:1px solid #ddd" />过调节潜水艇水箱中储水量,从而改变自身重力 </span></span><span style="font-size:14px;font-family:宋体">. </span></p><p><br /></p>北师大版不限教案专供vip会员doc
<img src="/images/nopic.gif" alt="2020%e5%b9%b4%e6%98%a5%e5%8c%97%e5%b8%88%e5%a4%a7%e7%89%88%e5%85%ab%e5%b9%b4%e7%ba%a7%e4%b8%8b%e5%86%8c%e7%89%a9%e7%90%86%e6%95%99%e6%a1%88%ef%bc%9a8.6+%e7%89%a9%e4%bd%93%e7%9a%84%e6%b5%ae%e6%b2%89%e6%9d%a1%e4%bb%b6%ef%bc%88%e9%99%84%e5%bd%93%e5%a0%82%e6%a3%80%e6%b5%8b%e9%a2%98%e5%8f%8a%e5%a4%87%e8%af%be%e5%8f%82%e8%80%83%e8%b5%84%e6%96%99%ef%bc%89" border="0" />
/UploadFiles/ja/2020/3/202031103835.doc
<script type="text/javascript" src="/cuplayer4/js/swfobject.js"></script>
<div class="video" id="CuPlayer"><b><img src="/cuplayer4/images/loading.gif" /> 网页视频播放器加载中,请稍后...<a href="http://www.cuplayer.com/cuplayer" target="_blank">点此升级>></a></b></div>
<script type="text/javascript">
var so = new SWFObject("/cuplayer4/player.swf","myCuPlayer","940","465","9","#000000");
so.addParam("allowfullscreen","true");
so.addParam("allowscriptaccess","always");
so.addParam("wmode","opaque");
so.addParam("quality","high");
so.addParam("salign","lt");
so.addVariable("JcScpAutoPlay","no"); //是否自动播放
so.addVariable("JcScpShowRightmenu","no"); //
so.addVariable("JcScpVideoPath","/UploadFiles/ja/2020/3/202031103835.doc"); //视频文件地址
so.addVariable("JcScpImg","");//视频缩略图
so.addVariable("JcScpSharetitle","酷播V4.0(CuPlayerV4.0)版使用官方演示实例");
so.write("CuPlayer");
</script>
<script language=javascript src="/cuplayer4/js/action.js" type=text/javascript></script>
<script type="text/javascript" src="/cuplayer3/images/swfobject.js"></script>
<div class="video" id="CuPlayer"><b><img src="/cuplayer3/images/loading.gif" /> 网页视频播放器加载中,请稍后...<a href="http://www.cuplayer.com/cuplayer" target="_blank">点此升级>></a></b></div>
<script type="text/javascript">
var so = new SWFObject("/cuplayer3/CuPlayerMiniV3_Black_S.swf","myCuPlayer","862","485","9","#000000");
so.addParam("allowfullscreen","true");
so.addParam("allowscriptaccess","always");
so.addParam("wmode","opaque");
so.addParam("quality","high");
so.addParam("salign","lt");
so.addVariable("CuPlayerFile","/UploadFiles/ja/2020/3/202031103835.doc"); //视频文件地址
so.addVariable("CuPlayerImage","");//视频缩略图
so.addVariable("CuPlayerShowImage","true");
so.addVariable("CuPlayerWidth","862");
so.addVariable("CuPlayerHeight","485");
so.addVariable("CuPlayerAutoPlay","false");
so.addVariable("CuPlayerAutoRepeat","true");
so.addVariable("CuPlayerShowControl","true");
so.addVariable("CuPlayerAutoHideControl","false");
so.addVariable("CuPlayerAutoHideTime","6");
so.addVariable("CuPlayerVolume","80");
so.addVariable("CuPlayerGetNext","false");
so.write("CuPlayer");
</script>
<script language=javascript src="/cuplayer4/js/action.js" type=text/javascript></script>
]
{PE.Field id="cone" fieldname="Title" /}-初中物理在线
{PE.Field id="cone" fieldname="gourl" /}
{PE.Label id="顶部" currentId="{PE.Field id="cone" fieldname="NodeID" /}"/}
当前位置:首页 > {PE.Label id="当前位置导航" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /} > 内容详情
{PE.Field id="cone" fieldname="Title" /}
作者:{PE.Field id="cone" fieldname="Author" /} 人气:{PE.Field id="cone" fieldname="Hits" /}次 时间:{PE.Field id="cone" fieldname="UpdateTime" /} 星级:{PE.Field id="cone" fieldname="Stars" /}
{PE.Field id="cone" fieldname="video" /}
- {PE.Label id="上一篇" unit="份资料" itemId="126412" nodeArray="{PE.Field id="cone" fieldname="NodeID" /}" titleLength="90" /}
- {PE.Label id="下一篇" unit="份资料" itemId="126412" nodeArray="{PE.Field id="cone" fieldname="NodeID" /}" titleLength="90" /}
{PE.Label id="A评论标签" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /}
|
用户评论
(以下评论仅代表网友意见,与本站立场无关)