科學導論期末考
Quiz
•
Physical Ed
•
University
•
Medium
Kuiyun 麗錦黃
Used 4+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球上有70%以上為海洋,並可以調節溫度而適合人類居住,主要是靠水的哪一項性質
比熱
熔點
沸點
水蒸氣
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
LED為電能直接轉換成光能的新世代照明產品,透過不同材質的半導體產生不同顏色的單色光,請問LED一開始被發明時,是什麼顏色?
綠色
紅色
藍色
白色
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下面哪一項是錯誤的敘述
螢火蟲發出的光為冷光
博物館裡的觸控互動設施是使用電容式的觸控原理
日光燈是經由啟動器產生高壓激發汞蒸氣產生紫外光,紫外光在撞擊燈管上的磷塗料而產生的螢光
省電燈泡原理與鎢絲燈相同
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關熱的敘述,下面哪一項是錯誤的?
所有的物質都有固態,液態和氣態
上課中提到3條毯子的問題,採用2張毯子墊在地上,1張蓋在身上,是因為空氣的傳熱比地面快
熱的傳遞方式有傳導,對流和輻射
玉米加熱變成爆米花是因為玉米內的空氣受熱後產生壓力,最後玉米成受不了壓力而外翻變成爆米花。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
LED很方便,但下面哪些原因使得LED需要進一步改良才能解決問題
放出大量紫外線
釋放藍光,影響視力及睡眠
可以調整亮度
需要多個LED一起使用才能達到需要的亮度
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關LED與OLED下面哪一個敘述是錯誤的
OLED 比 LED還要輕薄
OLED 與LED 都可以自己發光
OLED 可以調光,所以做出來的螢幕比LED鮮豔
OLED目前技術已經純熟,已經開始量產
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關觸電的敘述,哪一項是正確的?
電對人體的傷害,主要是由電壓決定
電擊棒的電壓高,電流也很大,所以可以嚇阻壞人
皮膚是可變電阻,觸電時間越久,電阻越大
觸電時,只要馬上移開電線,是不會有生命危險的
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