12/5 CE Bio
有咩大家會重點溫？ 加油我上年得C:icon032: what is dependent variable?what is independent variable? 原帖由 ming1989 於 2006-5-1007:54 PM 發表
有咩大家會重點溫？
我個bio呀sir話
睇清楚D題目
同埋最重要係Genetics:icon124: can any1 answer me?:o 我睇返上年Bio，有一條MC得14% 人中左(no.4) (佢特別低，其他題百分率都高)
我係其中一個:icon023:
我記得上年都有講過呢題(hkcm) :icon101:
呢條....唔多關你有冇讀bio :icon101: 考成點:icon032: 原帖由 Dadadede 於 2006-5-1105:59 PM 發表
what is dependent variable?what is independent variable?
Variables & Hypothesis
Variables
Scientists use an experiment to search for cause and effect relationships in nature. In other words, they design an experiment so that changes to one item cause something else to vary in a predictable way.
These changing quantities are called variables, and an experiment usually has three kinds: independent, dependent, and controlled.
The independent variable is the one that is changed by the scientist. In an experiment there is only one independent variable.
As the scientist changes the independent variable, he or she observes what happens.
The dependent variable changes in response to the change the scientist makes to the independent variable. The new value of the dependent variable is caused by and depends on the value of the independent variable. For example, if you open a faucet (the independent variable), the quantity of water flowing (dependent variable) changes in response--the water flow increases. The number of dependent variables in an experiment varies, but there is often more than one.
Experiments also have controlled variables. Controlled variables are quantities that a scientist wants to remain constant, and he must observe them as carefully as the dependent variables. For example, if we want to measure how much water flow increases when we open a faucet, it is important to make sure that the water pressure (the controlled variable) is held constant. That's because both the water pressure and the opening of a faucet have an impact on how much water flows. If we change both of them at the same time, we can't be sure how much of the change in water flow is because of the faucet opening and how much because of the water pressure. Most experiments have more than one controlled variable. Some people refer to controlled variables as "constant variables."
http://www.sciencebuddies.org/mentoring/project_variables.shtml 我覺得ｍｃ幾難．．因為都係有３句野．．
問你ｗｈａｔ ａｒｅ ｃｏｒｒｅｃｔ咁．．
跟住睇左之後有２個ａｎｓ都有可能咁ｌｏｒ．．
好鬼陰濕．．依ｄ ｍｃ題目我覺得
跟住ｐａｐｅｒ１我睇完ｓｅｃｔｉｏｎ ｂ第１０題．．
我即刻揀左８同９（ｓｅｃｔｉｏｎ ｂ ３題揀２題）
因為第１０條好似係問血管．．我唔係溫得好熟ｄ血管 早知溫下書啦... 原帖由 ming1989 於 2006-5-1206:52 PM 發表
我覺得ｍｃ幾難．．因為都係有３句野．．
問你ｗｈａｔ ａｒｅ ｃｏｒｒｅｃｔ咁．．
跟住睇左之後有２個ａｎｓ都有可能咁ｌｏｒ．．
好鬼陰濕．．依ｄ ｍｃ題目我覺得
跟住ｐａｐｅｒ１我睇完ｓｅｃｔｉｏ ...
同Physics MC一q樣
搞到時間好趕 無得check返:icon101:
上年bio條血管我都無揀:icon032: 原帖由 杰少仔 於 2006-5-1109:21 PM 發表
我睇返上年Bio，有一條MC得14% 人中左(no.4) (佢特別低，其他題百分率都高)
我係其中一個:icon023:
我記得上年都有講過呢題(hkcm) :icon101:
呢條....唔多關你有冇讀bio :icon101:
咁係問咩 ?? :icon032: 原帖由 阿爆 於 2006-5-1211:26 PM 發表
咁係問咩 ?? :icon032:
好似話咩北極人食個d野點解咁多脂肪之類，答案係因為佢住北極冇得選擇:icon101:
我記得個時你都有討論架wor :icon101: 原帖由 2076 於 2006-5-1209:16 PM 發表
同Physics MC一q樣
搞到時間好趕 無得check返:icon101:
上年bio條血管我都無揀:icon032:
Bio MC我仲有15分鐘淨喎:icon125:
好吧,我承認我是靠撞的:icon116: BIO做左少少pp之後俾我既感覺係易讀但考果陣有o的陰濕:icon009:
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