A Grade 7 learner conducted an investigation to determine the effect of distance from a light source to illumination. She decided to conduct an experiment using various light sources mounted at a fixed distance. What makes the learner’s experimental design INCORRECT?

I. The independent variable which is distance from a light source was not varied by the learner.
II. The type of light source was not kept the same throughout the experiment.
III. The various light sources used were not place at different distances.

CHOICES -

A. I and II
B. I and III
C. II and III
D. I, II, and III.

Question

19-06-2024
Science

Answered

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A Grade 7 learner conducted an investigation to determine the effect of distance from a light source to illumination. She decided to conduct an experiment using various light sources mounted at a fixed distance. What makes the learner’s experimental design INCORRECT?

I. The independent variable which is distance from a light source was not varied by the learner.
II. The type of light source was not kept the same throughout the experiment.
III. The various light sources used were not place at different distances.

CHOICES -

A. I and II
B. I and III
C. II and III
D. I, II, and III.

Sagot :

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