Question

4. A scientist conducted an experiment to determine how the amount of salt in a
body of water affects the number of plants that can live in the water. Which is
the independent variable?
A. Water
B. Temperature of the water
C Amount of salt in the water
D. Number of plants in the water​

Answer 1

Answer:

C. Amount of salt in water

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Answer 2

Answer:

The correct answer is Option C.

Explanation:

A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. The independent variable is Amount of salt in the water.

Scientific Method

A method of learning known as the scientific method entails developing and assessing hypotheses.

The scientific method is a rigorous, logical approach to problem-solving that eliminates subjectivity by demanding that every solution be supported by empirical facts that can be duplicated.

Steps in Scientific Method

• Ask a question.
• Perform research.
• Establish your hypothesis.
• Test your hypothesis by conducting an experiment.
• Make an observation.
• Analyze the results and draw a conclusion.
• Present the findings.

Two types of research variables:  

• INDEPENDENT VARIABLE: The change in the dependent variable is caused by the independent variable.
• DEPENDENT VARIABLE: Dependent variable is the one which is being measured in an experiment.

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