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</gourl2><NodeID>1409</NodeID><Title>几个容易混淆的物理实验</Title><SoftSize>0.00</SoftSize><SoftSizeUnit>B</SoftSizeUnit><SoftSize>0.00</SoftSize><SoftSizeUnit>B</SoftSizeUnit><typeicon>other</typeicon><editor>czwlzx</editor><author>帅良兵</author><user>czwlzx</user><userface>/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg</userface><Hits>
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   </Stars><Author>帅良兵</Author><infopoint>0</infopoint><Keyword>物理实验</Keyword><CopyFrom>原创</CopyFrom><SoftType></SoftType><CopyrightType></CopyrightType><DecompressPassword></DecompressPassword><OperatingSystem></OperatingSystem><UpdateTime>2006年12月23日</UpdateTime><RegUrl></RegUrl><DemoUrl /><DefaultPicUrl>/UploadFiles/wldekt_UploadFiles_3742/200612/20061223223440985.gif</DefaultPicUrl><Intro>实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验， 不仔细观察，很易</Intro><SoftIntro2>实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验， 不仔细观察，很易混淆。现举例如下，以期大家在教学中注意。
例1 　如图1 所示， 甲图为对沸腾的水停止加热， 随即用注射器抽气， 则看到的现象——，说明了——。乙图为对盛有少量水的瓶子打气， 当塞子弹起时， 看到的现象是——， 说明了——。　　　　 

解析　甲图中，往外抽气时，减小了瓶内的气压，从而使水的沸点降低，因此，会看到“水又沸腾”的现象，这说明了“液体的沸点随液面气压的减小而降低”。 乙图中，往瓶内打气，当塞子弹起时，会看到“瓶内出现‘白气’”的现象， 这是由于瓶内的气体对塞子做功， 内能减小， 温度降低，从而使瓶内</SoftIntro2><SoftIntro>
    【内容简介】实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验， 不仔细观察，很易混淆。现举例如下，以期大家在教学中注意。
例1 　如图1 所示， 甲图为对沸腾的水停止加热， 随即用注射器抽气， 则看到的现象——，说明了——。乙图为对盛有少量水的瓶子打气， 当塞子弹起时， 看到的现象是——， 说明了——。　　　　 

解析　甲图中，往外抽气时，减小了瓶内的气压，从而使水的沸点降低，因此，会看到“水又沸腾”的现象，这说明了“液体的沸点随液面气压的减小而降低”。 乙图中，往瓶内打气，当塞子弹起时，会看到“瓶内出现‘白气’”的现象， 这是由于瓶内的气体对塞子做功， 内能减小， 温度降低，从而使瓶内水蒸气液化形成“白气”。 该现象说明了“物体对外做功内能减小”。 
例2　如图2 所示， 甲图中金鱼吐出的小气泡在上升时逐渐变大， 这是由于——<SPAN style="FONT-SIZE: 1</SoftIntro><SoftIntroEncode>实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验， 不仔细观察，很易混淆。现举例如下，以期大家在教学中注意。
例1 　如</SoftIntroEncode><special /><DownloadUrl></DownloadUrl><Content>&lt;FONT face=宋体 size=3&gt;实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验，&lt;/FONT&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;不仔细观察，很易混淆。现举例如下，以期大家在教学中注意。&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;&lt;?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 22pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;例&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;1 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　如图&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;1 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;所示，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;甲图为对沸腾的水停止加热，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;随即用注射器抽气，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;则看到的现象&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;，说明了&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;。乙图为对盛有少量水的瓶子打气，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;当塞子弹起时，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;看到的现象是&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;说明了&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;。　　　　&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm" align=center&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;&lt;IMG style="FILTER: ; WIDTH: 217px; HEIGHT: 140px" height=140 alt="" hspace=0 src="PE.SiteConfig.ApplicationPathPE.SiteConfig.uploaddir/wldekt_UploadFiles_3742/200612/20061223223440985.gif" width=217 border=0 v:shapes="_x0000_i1025"&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 22.1pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;解析&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　甲图中，往外抽气时，减小了瓶内的气压，从而使水的沸点降低，因此，会看到“水又沸腾”的现象，这说明了“液体的沸点随液面气压的减小而降低”。&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;乙图中，往瓶内打气，当塞子弹起时，会看到“瓶内出现‘白气’”的现象，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;这是由于瓶内的气体对塞子做功，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;内能减小，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;温度降低，从而使瓶内水蒸气液化形成“白气”。&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;该现象说明了“物体对外做功内能减小”。&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 21.65pt; LINE-HEIGHT: 150%; mso-char-indent-count: 1.96; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;例&lt;/SPAN&gt;&lt;/B&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;2&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　如图&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;2 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;所示，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;甲图中金鱼吐出的小气泡在上升时逐渐变大，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;这是由于&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 1</Content><banben></banben><area></area><type></type><type2>不限</type2><ico></ico><video>&lt;FONT face=宋体 size=3&gt;实验题能考查学生的观察和分析问题的能力，初中物理中有几个看似相同，实质不同的实验，&lt;/FONT&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;不仔细观察，很易混淆。现举例如下，以期大家在教学中注意。&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;&lt;?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 22pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;例&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;1 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　如图&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;1 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;所示，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;甲图为对沸腾的水停止加热，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;随即用注射器抽气，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;则看到的现象&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;，说明了&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;。乙图为对盛有少量水的瓶子打气，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;当塞子弹起时，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;看到的现象是&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;说明了&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;。　　　　&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; LINE-HEIGHT: 150%; TEXT-ALIGN: center; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm" align=center&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;&lt;IMG style="FILTER: ; WIDTH: 217px; HEIGHT: 140px" height=140 alt="" hspace=0 src="PE.SiteConfig.ApplicationPathPE.SiteConfig.uploaddir/wldekt_UploadFiles_3742/200612/20061223223440985.gif" width=217 border=0 v:shapes="_x0000_i1025"&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 22.1pt; LINE-HEIGHT: 150%; mso-char-indent-count: 2.0; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;解析&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　甲图中，往外抽气时，减小了瓶内的气压，从而使水的沸点降低，因此，会看到“水又沸腾”的现象，这说明了“液体的沸点随液面气压的减小而降低”。&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;乙图中，往瓶内打气，当塞子弹起时，会看到“瓶内出现‘白气’”的现象，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;这是由于瓶内的气体对塞子做功，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;内能减小，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;温度降低，从而使瓶内水蒸气液化形成“白气”。&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;该现象说明了“物体对外做功内能减小”。&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P class=MsoNormal style="MARGIN: 7.8pt 0cm 15.6pt; TEXT-INDENT: 21.65pt; LINE-HEIGHT: 150%; mso-char-indent-count: 1.96; mso-para-margin-top: .5gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: 1.0gd; mso-para-margin-left: 0cm"&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;例&lt;/SPAN&gt;&lt;/B&gt;&lt;B style="mso-bidi-font-weight: normal"&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;2&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;　如图&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;2 &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;所示，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;甲图中金鱼吐出的小气泡在上升时逐渐变大，&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt; &lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'"&gt;这是由于&lt;/SPAN&gt;&lt;SPAN lang=EN-US style="FONT-SIZE: 11pt; LINE-HEIGHT: 150%"&gt;——&lt;/SPAN&gt;&lt;SPAN style="FONT-SIZE: 1</video><DefaultPicUrl>
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        <div class="clear">
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<div id="bjtidu_ground" onclick="closeModel()"> </div>
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<div id="login_model"><iframe name='LogOnFrame' id='LogOnFrame' src='' width='300' height='400' fullscreen=true download=false print=false openfile=false frameborder='no' border='0'></iframe></div>
<script>
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    /**
    * 关闭弹出框的功能*/
    function closeModel() {
        document.getElementById("bjtidu_ground").style.display = 'none';
        document.getElementById("login_model").style.display = 'none';
        // 不遮挡后面的内容将body设置为原始样式，也就是实现可滚动
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$(function(){
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    else{
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})
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{PE.Label id="A评论标签" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /}
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