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9. in an experiment, the one variable that is changed is called the a) …

Question

  1. in an experiment, the one variable that is changed is called the

a) independent variable
b) dependent variable
c) controlled variable
d) experimental variable

Explanation:

Brief Explanations

在实验中,被改变的变量称为自变量。自变量是实验者主动操纵的变量,其变化会引起其他变量(因变量)的变化。控制变量是在实验中保持不变的变量,以确保实验结果的准确性。实验变量是自变量的另一种说法。

Answer:

A. independent variable