自然 國中 2年以上以前

29

20. 日前 。 B B句話?(A)震央深度 17.2 公里(B)震度5級(2)是大地震(U米及為下層地辰 29. 將本月發生的地震記錄於《圖2》斷層分布圖,竹山地區因短時間的十多起地震 而引起記者報導。如何解讀這個記錄比較符合目前的科學看法?(A)竹山的多起 地震能有效緩減突發的大地震,民眾應該覺得安心 ( 竹山的多起地震是大地震 發生的前兆,民眾應該盡早搬離該地區(C)觀測的時間長度與數量並沒有意義, 維持尋常警覺即可(D)臺灣地震進入活躍期,應多報導不具名專家的看法。 Active Fout Map of foliwan (2011 Central Geological Survey, MOEA 竹山 Leand 《圖 2》 3 田 描述地震釋放的能量須

自然 國中 約3年以前

請問為什麼第8題D選項甲增加的位能＝乙減少的位能還要再加上手的作功呢，另外這整題我也不是太懂，可否說明一下，謝謝

請閱讀下列敘述後,回答7、8類: 自然課時老師讓同學利用珍珠吸管螺帽與细線組 合成圓周運動的教具,如圖(一所示,讓在上面的螺帽進 行圓周運助,老師要求同學儘量讓螺帽穩定作圓周運 動。 | ACTV wow | 17 已知圆周運動所需的向心力隨速率而增大,隨運動半徑增大而减小。 日 一是甲、乙、丙三位同學都選擇在短時間內作等速率圓周運動員。 幾乎呈水平則者正確? 乙 内 27 2個螺帽 4mg=fa 4個螺帽 4ngefa 日 4個螺帽 ____ 2mg=Fa 圖(二) Falfe ptt CH P色 vipeves, Fa CIPLO 3 re } (A)甲的週期於乙 (B)甲、乙兩圖的向心力相同 (C)乙圖的螺帽速率小於丙= (D)乙、丙兩圖的向心力不同 SFAIVRELE RRECRA va 9 ||| 8. 老師示範圖(三)的實驗時,在上方螺帽(稱為甲)作圓周 e 運動時,緩緩將下方的螺帽(稱為乙)向下拉,會發現 上方的螺帽愈轉愈快。假設實驗過程甲持續保持水平旋 轉,也忽略摩擦力,則關於此實驗過程,下列敘述何者 正確? (A)甲的重力對甲作正功。) A-MAN (B)乙的重力對乙作負动业→NT$9,"bar、 (C)手施力對乙作正功是使甲動能增加的原因之一 ( Inut 乙手往下拉 元动 | D)甲增加的動能=乙减少的位能 Androme Largumenty GRW 3 佛(5) VE B VABL (FAR {mv9ELE

英文 國中 約4年以前

求解27.🙏🙏

11 all over the world. ing Love, Sam 26~28 Oliver: What are you reading, Katie? 少了数226 Katie: I'm reading some stories about amazing kids that Time magazine wrote. Their stories make me believe that kids can do anything. Oliver: That sounds cool. Can you tell me about them? Katie: Sure. This one is about Gitanjali Rao, and she is an amazing scientist. She uses the science and technology she learns at school to make the world a better place. She made an app to stop people from being bullied on the Internet, and now she is working on how to detect biological contaminants inside water so people in the third-world won't get sick from it. Oliver: She sounds really smart. What about this one, Tyler Gordon? Katie: Tyler is a student who is hard of hearing and speaks very slowly. He was bullied a lot at school, which made him too scared to say anything. That did not stop him from expressing himself! He is an amazing artist and likes to draw portraits. He has drawn portraits of many famous people, and his talent is plain for everyone to see. Oliver: Good for him! Katie: And look at this boy, Ian McKenna! He is good at gardening. He is using his talent to grow vegetables for the people in his city. That's an amazing thing to do. Oliver: Thank you for sharing these stories with me, Katie! I feel like I can do so much more. S Scientist 科學家 bully 霸凌 detect 偵測 biological contaminant 生物污染 portrait le talent the 0)26. What can we know from the dialogue? 摘取 (A) Different people have different talents. 大意 Am (B) Famous people believe in themselves. (C) Kids are too young to change the world. (D) We become amazing by sharing stories with others. A 127. Which is NOT true? 指出 (A) Ian McKenna has a green thumb. (B) Oliver believes he can do more. 細節 (C) Gitanjali Rao is good at science. (D) Tyler Gordon is a bully at school. D