
南一國中自然2下_ch6-3
Authored by 南一 自然
Science
8th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
四腳床重量為120 kgw,每一床腳的底面積為300 cm2,則當四隻腳都著地時,腳對地面的壓力強度是多少?
100 gw/cm2
400 gw/cm2
1000 gw/cm2
4000 gw/cm2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
到山區遊玩時,常發現帶上山的食品,例如袋裝洋芋片,其包裝會有明顯膨脹的現象,主要原因是下列哪一項?
山上之氣壓較山下小
山上之氣溫較山下低
山上之物重較山下輕
山上之溼度較山下高
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列現象中,何者與「大氣壓力」的作用最有關係?
在河流中,流動的水總是由高處往低處流
用吸管喝飲料時,可將杯中的飲料吸入口中
在相同的地面上,若桌上東西愈重時,則愈難拉動桌子
無論擺放的方位為何,指南針的N極最後都會指向北方
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
一容器底面積為10 cm2,內裝有密度1.5 g/cm3的液體,其深度為20 cm,則容器底部所受壓力為何?
10 gw/cm2
20 gw/cm2
30 gw/cm2
40 gw/cm2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
你看過有些車子的車窗玻璃上用塑膠吸盤吊掛一些可愛的小玩偶嗎?它和下列哪一種現象使用的原理最接近?
獨木舟浮於水面上
用吸塵器吸灰塵
公車的油壓煞車
自來水的供水系統
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者不是帕斯卡原理的應用?
液壓起重機
吸塵器
玩具水槍
汽車用的千斤頂
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
裝置如附圖,當施力向下給活塞A時,哪一個活塞可以撐起最重的車子?
活塞B
活塞C
活塞D
一樣重
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