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苏教版科学四年级下册月考试卷(含答案)

  • 2026-03-18 19:09:05
苏教版科学四年级下册月考试卷(含答案)
四年级下册

一、填空题。(每空1分,共14分)

1、用来测量空气的温度和湿度的是(       )。

2、绝大多数物体在受热时,体积会(       ),遇冷时体积会(         ),这种现象叫做(       )。

3、冰受热后从固态变成液态,这种现象叫做(       )。

4、在一般情况下,当温度升高到(   )摄氏度时,水会沸腾,并产生大量气泡,水沸腾时的温度叫做(       )。

5、用来测量体温,读数更方便的温度计叫做(         )。

6、温度计是(       ),使用时必须轻拿轻放。

7、小红同学在科学课上把温度计放进盛热水的杯子中,发现温度计里面的液注会(     )。

8、水、(     )、水蒸气是同一种物质。

9、一杯热水在变凉的过程中,温度下降的规律是(        )。

10、用酒精灯给铜球加热,加热前,铜球能通过铜环,加热后铜球不能通过铜环,说明铜球加热后体积会(      ),再把加热后的铜球放入水中冷却,铜球又能通过铜环,说明铜球受热后体积会(       )。

判断题。(每题1分,共5分)

1、夏天自行车轮胎的气不能打的太满,否则会因气体热胀而爆胎。(     )

2、热胀冷缩会导致水泥路面破损,所以热胀冷缩对人类没有一点好处。(    )

3、把冰放在手心里摩擦可以加快冰的融化。(    )

4、测量水温时,可以把温度计从水里拿出来读数。(    )

5、任何情况下,水的沸点都是100°C。(     )

选择题。(每题1分,共5分)

1、物体的(    )叫温度。

A、大小      B、轻重      C、冷热程度

2、做实验时,如果洒出的酒精在酒精灯外燃烧,我们应该(    )

A、用湿抹布扑灭火焰    B、用嘴吹灭火焰   C、用水浇灭火焰

3、冰开始融化的温度是(    )

A、-5°C    B、0°C     C、10°C

4、水沸腾时继续加热,温度会(   )。

A、不断上升    B、保持不变   C、逐渐下降   

5、将一个压瘪了的乒乓球放在热水中,它能很快鼓起来,下列与这种现象完全相同的是(    )。

A、给自行车加气,轮胎会鼓起来     

B、在空中飞舞的塑料口袋,它会鼓起来    

C、将气球套在装有开水的小口玻璃瓶上,气球会鼓起来

简答题(每题4分,共16分)

1、冰、水、水蒸气有哪些相同之处和不同之处?

2、生活中有哪些热胀冷缩的现象?

3、气体在受热和遇冷时,体积分别有什么变化?

4、停止加热后,烧杯中水面的位置有什么变化?为什么?

五、实验题(每题1分,共10分)

如图所示,该实验装置是用来观察水沸腾时的现象和水在沸腾时的温度变化。

1、本实验中,是用       来给水加热,用        来测量水温。(填仪器名称)

2、从图中可以读出此时的水温是      °C,水       (选填“开始”或“没有开始”)沸腾,水沸腾时的温度是     °C。

3、当水沸腾时,可以观察到水中会有     产生,水面上会产生      ,水温      (选填“下降”“不变”或“上升”)

4、当水沸腾时,若在烧杯口套上一个被挤瘪的塑料袋,则塑料袋会        ,水蒸气的体积会                (选填“变小”“不变”或“变大”)

参考答案

一、填空题。(每空1分,共14分)

1、温湿度计

2、增大、缩小、热胀冷缩

3、融化

4、100、水的沸点

5、电子体温计

6、易碎品

7、上升

8、冰

9、先快后慢

10、增大、缩小

二、判断题。(每题1分,共5分)

√×√××

选择题。(每题1分,共5分)

CABBC

四、简答题。(每题4分,共16分)

1、冰、水、水蒸气有哪些相同之处和不同之处?

 相同之处:无色、无味、透明

不同之处:冰有固定形状,不会流动,是固体

水没有固定形状,会流动,是液体

水蒸气没有固定形状,会流动,是气体

2、生活中有哪些热胀冷缩的现象?

夏天轮胎容易爆胎,瘪的乒乓球放到热水里能够复原,夏天架电线时,电线不能拉的太紧

4、气体在受热和遇冷时,体积分别有什么变化?

气体在受热时体积会增大,遇冷时体积会缩小。

4、停止加热后,烧杯中水面的位置有什么变化?为什么?

停止加热后,烧杯中水面的位置下降了,因为产生了水蒸气。

五、实验题(每题1分,共10分)

1、酒精灯、温度计

2、96、没有开始、100

3、气泡、白气、不变

膨胀、变大

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  1. CONNECT:[ UseTime:0.000910s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001606s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000739s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000630s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001347s ]
  6. SELECT * FROM `set` [ RunTime:0.000574s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001510s ]
  8. SELECT * FROM `article` WHERE `id` = 465671 LIMIT 1 [ RunTime:0.010765s ]
  9. UPDATE `article` SET `lasttime` = 1773858282 WHERE `id` = 465671 [ RunTime:0.001579s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000685s ]
  11. SELECT * FROM `article` WHERE `id` < 465671 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001199s ]
  12. SELECT * FROM `article` WHERE `id` > 465671 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001242s ]
  13. SELECT * FROM `article` WHERE `id` < 465671 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006546s ]
  14. SELECT * FROM `article` WHERE `id` < 465671 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.024993s ]
  15. SELECT * FROM `article` WHERE `id` < 465671 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.010681s ]
0.203045s