教科版（2017秋）科学五年上册3.1《时间在流逝》课课练（含答案）

新版科学五年上册3.1《时间在流逝》课课练（含答案）
一、单选题
1.以下是我国古代一种计量时间的仪器是(???)
A.?地动仪?
?
?
?
?
?B.?日晷????
?
?
?C.?指南针
2.下列计时器中，（????）的计时精度是最准的。
A.?日晷??????????????B.?摆钟?????????C.?水钟
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3.古代人们制作的利用太阳计量时间的仪器是（????）。
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A.?滴漏?????????????????B.?日晷
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4.下列计时工具出现最早的（???）???????????
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A.?原子钟?????????????????B.?日晷????????
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"https:?/??/?mp.weixin.?/?_blank?)??C.?机械钟
5.古人利用光影来计时的仪器叫(???
)。???????????
A.?地动仪???????????????B.?日晷????????????????????C.?浑天仪．?
6.我们从(
??)可以追寻时间的痕迹。??
A.?大树的粗壮????????????????B.?大树的高度????????????????C.?大树的年轮
7.古时候人们之所以选择太阳、水、摆等计时，是因为它们(
??)。
A.?运动有规律??????????????????B.?取材比较方便?????????????????C.?持续时间比较久
8.古代人们制作的利用太阳计量时间的仪器叫（???）。
A.?日晷???????????????????????B.?浑天仪???????????????????????C.?滴漏
9.除了日晷以外，古人还利用（???）来计时。
A.?滴漏??????????????????????????B.?石英钟??????????????????????C.?电子表?
10.太阳快到头顶上了，估计时间接近(
??)。
A.?早上8点?????????????????????B.?上午10点??????????????????????C.?正午12点
二、判断题
11.我国古代每一个时辰相当于现在2小时。(
????)?
12.时间流逝的速度是有快慢的。(
????)?
13.古代的一个时辰就相当于现在的两个小时。(????)??
14.我们根据自身的感觉来计量时间是非常准确的(????)?
15.古代人们制作的利用太阳来计量时间的仪器是沙漏。(????)????
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16.我们可以用有规律或有节奏的活动来估计时间。(????)
17.虽然一分钟很快就过去了，但我们在这一分钟里也可以做很多事情。(????)
三、填空题
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18.钟表以________、________、________计量时间，钟面上的秒针转动一格，表示时间流逝了________秒钟，秒针转动一圈则表示时间流逝了________???
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19.日晷由________和________两部分组成。???
20.如图所示，同学们根据太阳在天空中的位置对现在的时间进行估计。你认为这样估计现在的时间________?(填“准确"或“不准确")
21.指出下图中各指针的名称并回答问题：________
一昼夜时针转动________圈。如果是白天，上图所示的时间是________
22.将日晷模型固定在白天一直能被________照射到的平地上。利用________使晷针朝向正北方。???
23.日晷的晷面是________的,晷针朝________。晷针和晷面________。???
四、解答题
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24.古代有哪些计时工具？至少写三种。???
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25.古代有哪些计时方法？请你举例说一说。（最少写三个）???
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26.说一说，你在一分钟内能完成哪些事情。???
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27.写出两种晚上能记录时间的简易时钟
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答案
1.
B??2.
B??3.
B??4.
B??5.
B??
6.
C??7.
A??8.
A??9.
A??10.
C??
11.?正确??12.?错误??13.?正确??
14.?错误??15.?错误??16.?正确??
17.?正确??
18.?时；分；秒；1；1分钟??
19.?晷面；晷针??
20.?不准确??
21.
；2；9：37??
22.?太阳；指南针??
23.?倾斜；北；垂直??
四、解答题
24.?日晷，圭表，水钟。??
25.?古代的计时方法有：用日晷计时、用沙漏计时、用水钟计时、用圭表计时、用点一炷香计时等。??
26.?解：做10道口算题；跑300米长的路；踢100个毽子。??
27.?燃油钟、水钟。?
?