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</gourl2><NodeID>2162</NodeID><Title>人教版八年级物理下册《10.3物体的浮沉条件及其应用》随堂练习题2</Title><SoftSize>0.00</SoftSize><SoftSizeUnit>B</SoftSizeUnit><SoftSize>0.00</SoftSize><SoftSizeUnit>B</SoftSizeUnit><typeicon>doc</typeicon><editor>czwlzx</editor><author>肖虎</author><user>czwlzx</user><userface>/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg</userface><Hits>
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   </Stars><Author>肖虎</Author><infopoint>1</infopoint><Keyword>随堂练习题,物体的浮沉条件及其应用</Keyword><CopyFrom>原创</CopyFrom><SoftType></SoftType><CopyrightType></CopyrightType><DecompressPassword></DecompressPassword><OperatingSystem></OperatingSystem><UpdateTime>2015年04月08日</UpdateTime><RegUrl></RegUrl><DemoUrl /><DefaultPicUrl>/UploadFiles/nopic.gif
     </DefaultPicUrl><Intro>【课前练习】
1.简述物体浸没在液体中时物体的浮沉情况。
对浸没在液体中的物体来说:
(1) (2) (3)。
而</Intro><SoftIntro2>【课前练习】
1.简述物体浸没在液体中时物体的浮沉情况。
对浸没在液体中的物体来说:
(1) (2) (3)。
而对于实心体来说，则又有:
(1) (2) (3)
2.浸没在液体中的某一物体，如果它所处的深度增加，则它受到液体的( )
A.压强增加，浮力不变 B.压强增加，浮力增加
C. 压强不变，浮力增加 D.压强不变，浮力不变
3.如图所示，A、B是体积相同的木块和铁块，当同时将它们的绳子剪断后，在木块上浮未露出水面和铁块下沉未到底部的过程中，以下说法正确的是( )
A.木块所受的浮力增大，铁块所受的浮力减小
B.木块所受的浮力减小，铁块所受的浮力增大
C. 木块所受的浮力增大，铁块所受的浮力不变
D.木块所受的浮力不变，铁块所受的浮力也不变
4.</SoftIntro2><SoftIntro>
    【内容简介】【课前练习】
1.简述物体浸没在液体中时物体的浮沉情况。
对浸没在液体中的物体来说:
(1) (2) (3)。
而对于实心体来说，则又有:
(1) (2) (3)
2.浸没在液体中的某一物体，如果它所处的深度增加，则它受到液体的( )
A.压强增加，浮力不变 B.压强增加，浮力增加
C. 压强不变，浮力增加 D.压强不变，浮力不变
3.如图所示，A、B是体积相同的木块和铁块，当同时将它们的绳子剪断后，在木块上浮未露出水面和铁块下沉未到底部的过程中，以下说法正确的是( )
A.木块所受的浮力增大，铁块所受的浮力减小
B.木块所受的浮力减小，铁块所受的浮力增大
C. 木块所受的浮力增大，铁块所受的浮力不变
D.木块所受的浮力不变，铁块所受的浮力也不变
4.甲、乙两只小球的质量、体积都相同，把它们分别浸在A、B两种不同的液体中，静止状态如图所示。若它们受到的浮力是F甲与F乙，两种液体的密度为ρA与ρB，则( )
A.F甲>F乙，ρA>ρB B.F甲<ρb>
C. F甲＝F乙，ρA>ρB D.F甲＝F乙，ρA<ρb>
【知识要点】
一、实验
将一块橡皮泥放在水面上，可观察到橡皮泥　　　　　　　　 。将橡皮泥捏成碗状再放在水面上，又可观察到橡皮泥将 　　　　　　　　 。
1.轮船:用钢铁制成空心即可。
........
		?</SoftIntro><SoftIntroEncode>【课前练习】
1.简述物体浸没在液体中时物体的浮沉情况。
对浸没在液体中的物体来说:
(1) (2) (3)。
而对于实心体来说，则又有:
(1) (2) (3)
2.浸没在液体</SoftIntroEncode><special /><DownloadUrl>下载地址1|stzx_UploadFiles_64/201504/2015040806145708.doc</DownloadUrl><Content>&lt;p&gt;【课前练习】&lt;br /&gt;
1.简述物体浸没在液体中时物体的浮沉情况。&lt;br /&gt;
对浸没在液体中的物体来说:&lt;br /&gt;
(1) (2) (3)。&lt;br /&gt;
而对于实心体来说，则又有:&lt;br /&gt;
(1) (2) (3)&lt;br /&gt;
2.浸没在液体中的某一物体，如果它所处的深度增加，则它受到液体的( )&lt;br /&gt;
A.压强增加，浮力不变 B.压强增加，浮力增加&lt;br /&gt;
C. 压强不变，浮力增加 D.压强不变，浮力不变&lt;br /&gt;
3.如图所示，A、B是体积相同的木块和铁块，当同时将它们的绳子剪断后，在木块上浮未露出水面和铁块下沉未到底部的过程中，以下说法正确的是( )&lt;br /&gt;
A.木块所受的浮力增大，铁块所受的浮力减小&lt;br /&gt;
B.木块所受的浮力减小，铁块所受的浮力增大&lt;br /&gt;
C. 木块所受的浮力增大，铁块所受的浮力不变&lt;br /&gt;
D.木块所受的浮力不变，铁块所受的浮力也不变&lt;br /&gt;
4.甲、乙两只小球的质量、体积都相同，把它们分别浸在A、B两种不同的液体中，静止状态如图所示。若它们受到的浮力是F甲与F乙，两种液体的密度为ρA与ρB，则( )&lt;br /&gt;
A.F甲&amp;gt;F乙，ρA&amp;gt;ρB B.F甲&lt;f乙，ρa&gt;&amp;lt;ρb&amp;gt;&lt;br /&gt;
C. F甲＝F乙，ρA&amp;gt;ρB D.F甲＝F乙，ρA&amp;lt;ρb&amp;gt;&lt;br /&gt;
【知识要点】&lt;br /&gt;
一、实验&lt;br /&gt;
将一块橡皮泥放在水面上，可观察到橡皮泥　　　　　　　　 。将橡皮泥捏成碗状再放在水面上，又可观察到橡皮泥将 　　　　　　　　 。&lt;br /&gt;
1.轮船:用钢铁制成空心即可。&lt;br /&gt;
........&lt;/f乙，ρa&gt;&lt;/p&gt;
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