网址:http://m.1010jiajiao.com/timu_id_1932346[举报]
据天气预报报道,中考前后几天的天气相差不大,南南同学记录了6月16日一天中不同时间的温度如下表:
|
时间 |
7:00 |
8:00 |
9:00 |
10:00 |
11:00 |
12:00 |
13:00 |
14:00 |
15:00 |
16:00 |
17:00 |
|
温度/℃ |
14 |
15 |
18 |
22 |
24 |
26 |
25 |
28 |
28 |
27.5 |
27 |
(1)请你根据表中的数据在如图中绘出温度随时间变化的图象.(提示:可以用柱形图、线形图或曲线图表示)
![]()
(2)请根据你华出的图象预测6月17日下午13:30的大致温度 .
(3)温度与人们的生活息息相关.以下给出了一组常见的温度值,你认为合理的是 ( )
A、人体正常体温是39℃
B、一标准大气压下,冰水混合物的温度为0℃
C、沸水的温度一定是100℃
D、适合人们洗澡的热水温度约70℃
查看习题详情和答案>>
请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
Certainly dustmen prefer to be known as "Reuse Collection and Disposal Officers". You may think that this is rather 36 , and it is better to call a spade a spade. But dustmen can be as 37 as people of any other occupation, though we must 38 that their job is not a 39 one in the world. We often take dustmen for granted. Perhaps because they usually come very early in the morning, before most people are 40 .We are likely to forget their 41 .Our dustbins are 42 regularly, but we 43 stop to think about the men who do this. However, it is one of the most important jobs in the world, and when there are no dustmen to 44 the rubbish, the general 45 soon becomes aware that something is wrong. Recently, the dustmen of England went on strike for higher wages.
During the first few days it was regarded as a 46 .But when the first two weeks had passed, and the dustbins were overflowing in nearly every backyard in the country, the joke did not seem so 47 any more. 48 the strike continued, people could not 49 the hills of rubbish around their dustbins, and they looked for other places in which to 50 it. Even Leicester Square, in the heart of West End of London, was 51 high with plastic bags full of smelly rubbish. This was a(n) 52 attraction that the people of London were not at all 53 to see. Even when the strike was over, it took several weeks for the country to get cleaned up completely. Perhaps now the English people appreciate the work of 54 dustmen rather more 55 and won't take them for granted any more.
| 【小题1】 |
|
| 【小题2】 |
|
| 【小题3】 |
|
| 【小题4】 |
|
| 【小题5】 |
|
| A.existence | B.presence | C.absence | D.performance |
| 【小题7】 |
|
| 【小题8】 |
|
| 【小题9】 |
|
| 【小题10】 |
|
| 【小题11】 |
|
| 【小题12】 |
|
| 【小题13】 |
|
| 【小题14】 |
|
| 【小题15】 |
|
| 【小题16】 |
|
| 【小题17】 |
|
| A.disappointed | B.serious | C.nervous | D.happy |
| 【小题19】 |
|
| 【小题20】 |
|
(1)如图ABC所示,是小明同学用温度计测小烧杯中水的初温时的操作图.
A是操作过程,B是读数过程,C是读取的温度.
①A图中操作的错误是
②B图中读数的错误是
③若操作正确无误,根据C图可知此时烧杯中水的实际初始温度是
(2)小明同学在利用如图D所示的装置做实验时,发现从开始给水加热到水开始沸腾所用的时间过长,请你帮助他找出可能存在的原因.(写出两种)
①
②
(3)在观察水的沸腾过程中,观察到沸腾前和沸腾时水中气泡上升过程中的两种情况,如图E所示,则图
(4)从点燃酒精灯加热开始计时,当液体中有气泡上升时,每隔1min记录水的温度如表:
| 时间/min | … | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 温度/℃ | … | 80 | 84 | 88 | 92 | 96 | 98 | 98 | 98 | 98 | 98 |
②在图G中以时间为横轴,以温度为纵轴,以表格中的数据作出水的沸腾图象.
水沸腾后如果停止对水加热,水
(5)小明突然想到这样一个问题:在水沸腾前,温度计示数上升速度是否是均匀的呢?根据实验数据,作出了如图F所示的温度随时间变化的图象,温度计示数上升速度先慢后快再慢;试解释造成这种现象的原因:
三个实验小组同时分别探究“蜡熔化时温度的变化规律”、“海波熔化时温度的变化规律”与“水的沸腾”,记录数据如下表:
|
三个实验小组同时分别探究“蜡熔化时温度的变化规律”、“海波熔化时温度的变化规律”与“水的沸腾”,记录数据如下表:
|
时间/min |
… |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
|
甲的温度/℃ |
… |
97.0 |
97.5 |
98.0 |
98.0 |
98.0 |
98.0 |
98.0 |
98.0 |
|
乙的温度/℃ |
… |
35.0 |
40.0 |
45.0 |
49.5 |
54.0 |
58.3 |
62.5 |
66.6 |
|
丙的温度/℃ |
… |
46.0 |
47.0 |
48.0 |
48.0 |
48.0 |
48.0 |
48.8 |
49.8 |
(1)根据记录表,请你判断下列说法正确的是 。
A.甲是蜡,乙是海波,丙是水 B.甲是海波,乙是蜡,丙是水
C.甲是水,乙是海波,丙是蜡 D.甲是水,乙是蜡,丙是海波
(2)在上表所示12min~15min时间内,下列说法正确的是 。
A.甲不断吸收热量,内能不变 B.乙不断吸收热量,内能不变
C.丙不断吸收热量,内能增加 D.丙吸收和放出热量相等,内能不变
查看习题详情和答案>>