中学生网络课堂
初二物理 (北师版下册)
物体的浮沉条件
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==
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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==
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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==
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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==
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