Question

which of the following are probable sources of error in a scientific experiment? check all of the boxes that apply. a student uses different thermometers throughout a two - week experiment. data is analyzed carefully and double - checked. the experimental design does not test the proposed hypothesis. leaves were collected in a random pattern from all parts of a tree. a control group of plants gets more light than the experimental group. a scale was recalibrated before each day’s measurement.

Explanation:

• Using different thermometers throughout an experiment can lead to inconsistent measurements as different thermometers may have different calibration accuracies.
• If the experimental design does not test the proposed hypothesis, it means the experiment is not set up correctly to address the research question, which is a source of error.
• If the control group of plants gets more light than the experimental group, it violates the principle of keeping all variables except the independent variable constant, leading to inaccurate results.

Answer:

A. A student uses different thermometers throughout a two - week experiment.
C. The experimental design does not test the proposed hypothesis.
E. A control group of plants gets more light than the experimental group.