水泥橋每隔一段距離就會出現伸縮縫的結構,請問設計此結構的主要目的為何?

國二上理化Chap5_3 熱對物質的影響 2024 1108

Quiz
•
Physics
•
8th Grade
•
Medium
Sone Wang
Used 4+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
增加橋的強度
減少水泥的用量以節省成本
避免水泥熱脹冷縮,路面變形破裂
增加路面摩擦力,防止車子打滑
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
一般而言,物質在哪一種狀態下,其組成粒子間的排列最緊密、整齊,且位置不能任意移動?
固態
液態
氣態
氣液共存態
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列何者在常壓下加熱,不會發生昇華的現象?
樟腦丸
乾冰
水
碘
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
在1大氣壓下,一純物質的熔點為-117℃、沸點為78℃,則在100℃時,此物質的狀態為下列何者?
固態
液態
氣態
固、液態共存
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
以相同熱源加熱相同質量的甲、乙、丙三種固體物質,可得如附圖的關係圖。則熔點最低者為何?
甲
乙
丙
三者的熔點相同
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
-10℃、25公克的冰塊放在燒杯中加熱,加熱過程中溫度與加熱時間關係如附圖所示,則哪一時段中冰與水共存?
0~t1
t1~t2
t2~t3
t3~t4
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
一大氣壓下,均勻加熱-20℃的冰塊,會最先觀察到下列哪一項?
冰開始熔化成水
冰的溫度上升
冰的質量增加
冰直接昇華
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