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理化-國中7-9年級(四)
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搜尋相關的資源 839
Aa-Ⅳ-1-S04 05:46
video Aa-Ⅳ-1-S04
教育部/教育部國中8-9年級
元素符號旁的數字代表不同的資訊:左下角是原子序(質子數);左上角是質量數(質子數+中子數)
觀看次數495
修改日期:2026-03-03
Ka-Ⅳ-9-S09 04:40
video Ka-Ⅳ-9-S09
教育部/教育部國中8-9年級
認識光學儀器:放大鏡、顯微鏡與相機
觀看次數281
修改日期:2026-03-03
Gb-Ⅳ-1-S02 05:45
video Gb-Ⅳ-1-S02
教育部/教育部國中8-9年級
介紹各種化石為生物演化的最直接證據,並說明活化石非為化石。
觀看次數592
修改日期:2026-02-26
用水管隔空吸引鋁罐?│《科科學會了》把課本的「靜電(摩擦起電)」變有趣! 05:54
靜電是什麼?靜電指的是電荷在物體表面不平衡分佈所引起的現象,當兩個物體互相摩擦時,電子會從一個物體轉移到另一個物體上,這種因為電子轉移而產生的電荷現象,就稱為靜電。靜電不會像電流一樣流動,它是暫時停留在物體表面的電荷,直到遇到導體或接地後才會釋放。以日常生活中的例子來說,當我們用塑膠梳子梳頭髮時,會發現頭髮變得容易吸在臉上,這是因為梳頭的過程中,電子從頭髮轉移到梳子上,使頭髮和梳子帶靜電,與臉產生吸附現象。
觀看次數1413
修改日期:2026-02-23
ios
時間倒數
app 時間倒數
洪琮欽/台南市網路中心國小1-4年級,國小6年級~國中9年級
Digital sand timer with artistic design. Time flows and does it stylishly. This digitized hourglass can be used to time anything for up to 60 minutes. It's like having a nice looking visual indicator of how much time is left on your task.* KIDS FRIENDLYTimer visualizes time to kids and lets them feel the time. Without reading or even knowing the numbers one can look at the visualized time flow, feel it and understand how long to wait or whether to hurry up.* STAY NOTIFIEDIt lets you set the alarm sound that will play when the timer is finished. You can choose from 16 unique alarm sounds, melodies and loops. You’ll be notified when your time is up even if you’re using another app or your device is locked. It can also repeat the sound alarm (up to 3 times) at the given interval if it was missed/snoozed.* COLOR YOUR TIMEYou can easily change the timer color to fit your personal lifestyle. There are 5 color themes: turquoise, red, green, amber and pink. Just pick the one you like in the application settings.* UNIVERSAL APPTimer works both on your iPhone/iPod and iPad, contains HD graphics for retina and iPad displays and supports all screen orientations for all devices. [+Retina graphics for iPad 3rd generation]* SEE ALSO: Best TimerBeautifully designed sand timer, stylish kitchen timer, countdown/up and powerful stopwatch All in one creatively combined Best Timer application to suit all your timing needs. Search "Best Timer" on iTunes (http://itunes.apple.com/app/best-timer/id415656570) 洪琮欽 時間倒數 Digital sand timer with artistic design. Time flows and does it stylishly. This digitized hourglass can be used to time anything for up to 60 minutes. It's like having a nice looking visual indicator of how much time is left on your task.* KIDS FRIENDLYTimer visualizes time to kids and lets them feel the time. Without reading or even knowing the numbers one can look at the visualized time flow, feel it and understand how long to wait or whether to hurry up.* STAY NOTIFIEDIt lets you set the alarm sound that will play when the timer is finished. You can choose from 16 unique alarm sounds, melodies and loops. You’ll be notified when your time is up even if you’re using another app or your device is locked. It can also repeat the sound alarm (up to 3 times) at the given interval if it was missed/snoozed.* COLOR YOUR TIMEYou can easily change the timer color to fit your personal lifestyle. There are 5 color themes: turquoise, red, green, amber and pink. Just pick the one you like in the application settings.* UNIVERSAL APPTimer works both on your iPhone/iPod and iPad, contains HD graphics for retina and iPad displays and supports all screen orientations for all devices. [+Retina graphics for iPad 3rd generation]* SEE ALSO: Best TimerBeautifully designed sand timer, stylish kitchen timer, countdown/up and powerful stopwatch All in one creatively combined Best Timer application to suit all your timing needs. Search "Best Timer" on iTunes (http://itunes.apple.com/app/best-timer/id415656570)
點閱數1983
下載數7
修改日期:2026-02-17
【自然系列-化學 | 物質探索07】(週期表的出現)決鬥吧!元素王-下集 06:34
門德列夫參加了卡爾斯魯厄國際化學會議後,得知元素間的重量及化學性質,發現其中的規律性,以為完成元素表的門德烈夫發現如果按照重量將其填滿,元素的化學性質就會有偏移,但如果將化學性質對齊,整張表就會.......
觀看次數958
下載數0
修改日期:2026-02-06
電解與陰陽極影片-水中離子分兩派!通通去屬於自己的陰陽極站好│陰陽離子與陰陽極│科學家的故事-法拉第│LIS情境科學教材 05:45
電解和陰離子、陽離子與陰極、陽極是什麼?電解是指化合物加到水中之後,電經過化合物水溶液之後,會把化合物分解的過程。陰、陽極是指電極的性質不同,法拉第認為電進入水中的電極稱為陽極,而電離開水的電極稱為陰極。陰、陽離子是指當可以被電解的化合物,在水中會變成帶電的離子狀態。而根據它們所帶的電和性質不同,分成會被陽極吸引的陰離子 ( 帶負電 ),以及被陰極吸引的陽離子 ( 帶正電 ) 兩種離子。
觀看次數333
修改日期:2026-02-06
【自然系列-化學 | 燃燒02】(燃燒與氧化理論)燃燒東西軍II-氧化的真諦-上集 07:32
【自然系列-化學 | 燃燒02】(燃燒與氧化理論)燃燒東西軍II-氧化的真諦-上集
觀看次數763
下載數0
修改日期:2026-02-06
【自然系列-物理 | 氣壓】(大氣壓力)藏在幫浦裡的OO -part2 06:54
他,就是伽利略的學生托里切利。托里切利研究過大量水井之後發現,只有超過十公尺以上的井抽不出水。於是他想到,水不是為了消滅真空而上升,是被大氣壓力擠上來,大氣壓力約十公尺多水柱,或是76公分水銀柱。
觀看次數639
下載數0
修改日期:2026-02-06
【自然系列-化學 | 物質探索07】(週期表的出現)決鬥吧!元素王-上集 07:06
19世紀的俄國科學家——門得列夫,媽媽臨死前給了他一盒元素卡牌,如此多的元素卡裡究竟藏著什麼祕密,可以幫助門得列夫發明了影響化學界深遠的週!期!表!
觀看次數882
下載數0
修改日期:2026-02-06