中学生网络课堂
初二物理 (苏教版下册)
物体的浮与沉
本课配套习题挑战模式1/5
单选题
难度系数：
1.将一个物体分别放入水和酒精中，在酒清中漂浮，在水中也漂浮，则（ ）
| A: 它在水中受到的浮力大 |
| B: 它在酒精中受到的浮力大 |
| C: 它在水和酒精中受到的浮力一样大 |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWQjOS4gOeJqeS9k+WcqOS4jeWQjOa2suS9k+S4rea8gua1ru+8jOa1ruWKm+ebuOetieOAgg==
- 答案：Qw==
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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.
两物体漂浮在液面上，若受到的浮力相等，则这两个物体一定（ ）
| A: 密度相等 |
| B: 体积相等 |
| C: 质量相等 |
| D: 露出液面的体积相等 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5ryC5rWu77yM5rWu5Yqb562J5LqO6YeN5Yqb44CCPGJyPjwvcD4=
- 答案：Qw==
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本课配套习题挑战模式4/5
单选题
难度系数：
4.有一木块漂浮在水面若向水中加一些盐，则（ ）
| A: 木块可能下沉 |
| B: 木块可能漂浮 |
| C: 木块一定下沉 |
| D: 木块一定漂浮 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWQjOS4gOeJqeS9k+WcqOS4jeWQjOa2suS9k+mHjOa8gua1rjo8aW1nIHdpZHRoPTE1OSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8zQy83RS9yQkFDRTFOc212bVFuSFJVQUFBQ3F0TG9XVE0yNjUucG5nIj4=
- 提示2：IOWKoOebkOaYr+a2suS9k+WvhuW6puWPmOWkp+OAgg==
- 答案：RA==
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本课配套习题挑战模式5/5
单选题
难度系数：
5.
在盛有水的圆柱形容器内，放入物体乙，乙有1/3的体积露出水面，现在把甲放在乙物体上，物体乙刚好全部浸没，则甲乙两物体质量之比是（）
| A: 2:1 |
| B: 1:3 |
| C: 1:2 |
| D: 1:1 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5bCG5ryC5rWu54mp5L2T5YWo6YOo5Y6L5YWl5ray5L2T6YeMOiA8aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMDAvNzUvckJBQ0ZGTnNtX2ZELWdRVkFBQURMdXdnWExnOTg1LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wMC83NS9yQkFDRkZOc21fZkQtZ1FWQUFBREx1d2dYTGc5ODUucG5nIiBoZWlnaHQ9IjQyIiB3aWR0aD0iNTMiPjwvcD4=
- 答案：Qw==
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