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理化-國中7-9年級(四)
過濾條件

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549
修改日期:2026-03-03
Ka-Ⅳ-4-S03 08:10
video Ka-Ⅳ-4-S03
教育部/教育部國中8-9年級
知道超聲波與其應用及認識不同生物的聽力頻率範圍
觀看次數533
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643
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1452
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2005
下載數7
修改日期:2026-02-17
【自然系列-物理 | 彈力】(游絲彈簧的發明與虎克定律)惠虎專利爭奪戰-part1 05:48
學者惠更斯發表擺鐘的發明,卻被學者虎克鬧場。原來擺鐘早在好幾年前就被伽利略提出,而且擺鐘遇到晃動就會失準。被虎克一鬧,同時解決不了晃動問題的惠更斯,卻被神秘人物找去,這個人是誰?
觀看次數851
下載數0
修改日期:2026-02-06
【自然系列-物理 | 浮力】 (浮力與密度)王冠的秘密-part2 06:26
泡澡時,阿基米德發現浴缸滿出的水的體積,正好等於沉體的體積,這不就正好能解決王冠的難題了嗎?於是衣服也不穿立馬找王冠一測,果然被加入其它物質,但他也發現其實兇手另有其人……
觀看次數935
下載數0
修改日期:2026-02-06
【自然系列-化學 | 化學反應03】(勒沙特列原理)從高爐到宇宙的規律-下集 06:58
助手阿布想跟勒沙特列教授學習如何提升煉鐵產量,沒想到都在做些打雜與整理實驗數據的雜事!直到教授發現一個現象後,超級認真做實驗與分析,究竟他們能不能找出提升煉鐵量的關鍵呢?
觀看次數638
下載數0
修改日期:2026-02-06
【自然系列-物理 | 聲學】 (聲學)聽見宇宙的聲音-part1 06:22
畢德哥拉斯經過打鐵鋪發現物體震動會產生聲音,而且震動快慢會影響聲音的高低。某天做夢,他竟然聽到宇體每個天體都傳來聲音,這是怎麼一回事呢?
觀看次數563
下載數0
修改日期:2026-02-06
【自然系列-化學 | 酸鹼01】(酸鹼的分辨)拉瓦節の酸鹼變色大作戰-下集 04:45
在上一集中拉瓦節的酸鹼之惑終於解開,原來關鍵就是『酸的生成者』Oxygen!酸除了有酸、會腐蝕、石蕊試紙變紅之外,酸竟然還都存在氧元素,而瓦節的基礎化學論也因此變的更加完整!
觀看次數686
下載數0
修改日期:2026-02-06