中学生网络课堂
初二物理 (人教版)
物体的浮沉条件及应用
本课配套习题挑战模式1/5
单选题
难度系数：
1.一艘轮船从海里驶人河里，它受到的浮力将（ ）
| A: 变大 |
| B: 不变 |
| C: 变小 |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS7jua1t+WIsOaysyzoiLnku43nhLbmvILmta4=
- 提示2：IOa8gua1rizmta7lipvnrYnkuo7ph43lips=
- 答案：Qg==
4oi16L2u6Ii55aSE5LqO5ryC5rWu77yMPGJyPuKItEY8c3ViPua1rjwvc3ViPj1H77yMPGJyPuKItOi9ruiIueWPl+WIsOays+awtOWSjOa1t+awtOeahOa1ruWKm+mDveetieS6jui9ruiIueWPl+WIsOeahOmHjeWKm0fvvIw8YnI+4oi06L2u6Ii55LuO5rW36YeM6am25Lq65rKz6YeM5a6D5Y+X5Yiw55qE5rWu5Yqb5LiN5Y+YLiA8YnI+5pWF6YCJQi4g
本课配套习题挑战模式2/5
单选题
难度系数：
2.轮船从河里驶入海里，轮船将（ ）
| A: 上浮一些，受到的浮力变大 |
| B: 上浮一些，受到的浮力不变 |
| C: 下沉一些，受到的浮力变大 |
| D: 下沉一些，受到的浮力不变 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOS7jua1t+WIsOaysyzoiLnku43nhLbmvILmta4=
- 提示2：IOiZveeEtua1ruWKm+ebuOetie+8jOS9huaYr+a1t+awtOeahOWvhuW6puavlOays+awtOeahOWvhuW6puWkpw==
- 提示3：IOagueaNrumYv+Wfuuexs+W+t+WOn+eQhu+8jOa1ruWKm+ebuOetie+8jOWvhuW6puWkp1Y8c3ViPuaOkjwvc3ViPuWwjw==
- 答案：Qg==
5ZCM5LiA6ImY6L2u6Ii577yM5YW26YeN5Yqb5LiN5Y+YLiA8YnI+4oi16L2u6Ii55aeL57uI5ryC5rWu77yMPGJyPuKItEY8c3ViPua1rjwvc3ViPj1H77yMPGJyPuKItOi9ruiIueWPl+WIsOays+awtOWSjOa1t+awtOeahOa1ruWKm+mDveetieS6jui9ruiIueWPl+WIsOeahOmHjeWKm0fvvIzmlYVBQ+S4jeato+ehru+8mzxicj7iiLXmsrPmsLTnmoTlr4bluqblsI/kuo7mtbfmsLTnmoTlr4bluqbvvIw8YnI+4oi05qC55o2uRjxzdWI+5rWuPC9zdWI+Pc+BZ1Y8c3ViPuaOkjwvc3ViPuWPr+efpe+8jOi9ruiIueaOkuW8gOays+awtOeahOS9k+enr+Wkp+S6juaOkuW8gOa1t+awtOeahOS9k+enrzxicj7iiLTova7oiLnku47msrPph4zpqbblhaXmtbfph4zvvIzmjpLlvIDmtbfmsLTnmoTkvZPnp6/lj5jlsI/vvIzoiLnlsIbkuIrmta7kuIDkupvvvIzmlYVC5q2j56Gu77yMROS4jeato+ehri4gPGJyPuaVhemAiUIuIA==
本课配套习题挑战模式3/5
单选题
难度系数：
3.潜水艇的工作原理是（ ）
| A: 改变自身的体积大小 |
| B: 改变自身的压强大小 |
| C: 改变自身的浮力大小 |
| D: 改变自身的重力大小 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOa9nOawtOiJh+aYr+mAmui/h+aUueWPmOiHqui6q+mHjeWKm+Wkp+Wwj+adpeWunueOsOS4iuWNh+WSjOS4i+ayieeahA==
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.关于潜水艇，下列说法正确的是（ ）
| A: 潜水艇是通过吸水或排水来改变自身重力达到上浮和下沉的 |
| B: 潜水艇是通过改变自身体积来改变浮力达到上浮和下沉的 |
| C: 潜水艇在水面航行时受到的浮力大于潜入水中航行时受到的浮力 |
| D: 潜水艇漂浮在水面上航行从大海驶入江面过程中受到的浮力减小 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWOn+eQhuaYr+mAmui/h+aUueWPmOiHqui6q+mHjeWKm+WunueOsOS4iuWNh+WSjOS4i+ayiQ==
- 提示2：IOWcqOawtOS4i+eahOaXtuWAmea9nOawtOa9nOiJh+a1ruWKm+S4jeWPmOOAgg==
- 提示3：IOaDs+S4iuWNh++8jOaOkuawtO+8jOWHj+Wwj+mHjeWKm++8jOWQkeS4i+ayie+8jOWQuOWFpea1t+awtO+8jOaYr+mHjeWKm+WinuWkp+OAgg==
- 答案：QQ==
4pGg5rC05Lit77yM5r2c5rC06ImH5Y+X5Yiw5rC055qE5rWu5Yqb5ZKM6YeN5Yqb55qE5L2c55So77yMPGJyPuKItUY8c3ViPua1rjwvc3ViPj3PgTxzdWI+5rC0PC9zdWI+djxzdWI+5o6SPC9zdWI+Z++8jOa9nOawtOiJh+eahOS9k+enr+S4jeWPmO+8jOaOkuW8gOawtOeahOS9k+enr+S4jeWPmO+8jDxicj7iiLTmvZzmsLToiYflj5fliLDmsLTnmoTmta7lipvkuI3lj5jvvJs8YnI+5oqK5Y6L57yp56m65rCU5Y6L5YWl5r2c5rC06ImH55qE5Y6L5Yqb6Iix77yM5bCG5rW35rC05o6S5Ye677yM5r2c5rC06ImH6Ieq6YeNR+WHj+Wwj++8jOW9k0Y8c3ViPua1rjwvc3ViPu+8nkfml7bvvIzmvZzmsLToiYfkuIrmta7vvJs8YnI+5omT5byA5Y6L5Yqb6Iix55qE6ZiA6Zeo77yM6K6p5rW35rC06L+b5YWl5Y6L5Yqb6Iix5YaF77yM5r2c5rC06ImH6Ieq6YeNR+WinuWkp++8jOW9k0Y8c3ViPua1rjwvc3ViPu+8nEfml7bvvIzmvZzmsLToiYfkuIvmsonvvJs8YnI+5b2TRjxzdWI+5rWuPC9zdWI+PUfml7bvvIzmvZzmsLToiYfmgqzmta7vvIzlj6/ku6XlgZznlZnlnKjku7vkvZXmt7HluqbvvJs8YnI+55Sx5q2k5Y+v6KeB77yM5r2c5rC06ImH6IO95aSf5LiK5rWu5ZKM5LiL5rKJ5piv6YCa6L+H5pS55Y+Y6Ieq6Lqr6YeN5Yqb5p2l5a6e546w55qELiDmlYVB56ym5ZCI6aKY5oSP77ybQuS4jeespuWQiOmimOaEjy4gPGJyPuKRoea9nOawtOiJh+WcqOawtOmdouiIquihjOaXtu+8jOWkhOS6jua8gua1rueKtuaAge+8jOWPl+WIsOeahOa1ruWKm+etieS6juWFtumHjeWKm++8jOW9k+a9nOWFpeawtOS4reiIquihjOaXtu+8jOa9nOawtOiJh+iHqumHjUflop7lpKfvvIzlj5fliLDnmoTmta7lipvlpKfkuo7vvJvmlYVD5LiN56ym5ZCI6aKY5oSPLiA8YnI+4pGi5r2c5rC06ImH5ryC5rWu5Zyo5rC06Z2i5LiK6Iiq6KGM5LuO5aSn5rW36am25YWl5rGf6Z2i6L+H56iL5Lit6YeN5Yqb5LiN5Y+Y77yM5omA5Lul5Zyo5q2k6L+H56iL5Lit5Y+X5Yiw55qE5rWu5Yqb5LiN5Y+Y77yb5pWFROS4jeespuWQiOmimOaEjy4gPGJyPuaVhemAiUEuIA==
本课配套习题挑战模式5/5
单选题
难度系数：
5.悬浮在水中的潜水艇排出水舱中的一部分水后，潜水艇将（ ）
| A: 下沉 |
| B: 上浮 |
| C: 仍悬浮在水中 |
| D: 先下沉后上浮 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaOkuawtOWQjumHjeWKm+WHj+Wwjw==
- 提示2：IOa9nOawtOiJh+S9k+enr+S4jeWPmO+8jOa1ruWKm+S4jeWPmOOAgg==
- 提示3：IOa1ruWKm+Wkp+S6jumHjeWKmw==
- 答案：Qg==
5r2c5rC06ImH6YCa6L+H5o6S5rC05oiW6L+b5rC05p2l5pS55Y+Y6Ieq6Lqr55qE6YeN5Yqb77yM5b2T5o6S5Ye65rC05pe277yM6Ieq6Lqr6YeN5Yqb5YeP5bCP77yM5rWu5Yqb5LiN5Y+Y77yM5YiZ5r2c5rC06ImH5bCG5LiK5rWuLiA8YnI+5pWF6YCJQi4g
