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In a shadow experiment what is keeping the object's height the same called?

Answer and explanation

Correct answer: Controlled variable

The direct answer is A, a controlled variable. A controlled variable is a condition deliberately kept unchanged so that the effect of the independent variable can be judged fairly. In a shadow experiment, the object's height may affect shadow length. Therefore, if the investigation changes another factor, such as the light’s position, the object's height should remain the same. Option A is correct because height is being held constant. Option B, the independent variable, is the factor intentionally changed, such as distance from the lamp, not the fixed height. Option C, the dependent variable, is the measured response, such as shadow length. Option D, a conclusion, is the statement made after examining the results; it is not a variable. Thus the fixed height is a controlled variable. Exam cue: “same throughout” usually signals a controlled variable.

Related tags

Object-HeightControlled-VariableShadowVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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