Controls and Variables in Scientific Experiments
Explore the fundamental concepts of controls and variables in scientific experimentation with this Grade 11 science worksheet.
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Controls and Variables in Scientific Experiments
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Read each question carefully and provide thoughtful answers based on your understanding of scientific controls and variables.
1. In an experiment, what is the purpose of a control group?
To introduce a new variable
To provide a baseline for comparison
To measure the dependent variable
To manipulate the independent variable
2. Which of the following is an example of an independent variable?
The growth of a plant
The amount of fertilizer given to a plant
The color of the plant's leaves
The number of flowers on a plant
1. A factor that is intentionally changed by the experimenter is called the variable.
2. The outcome that is measured in an experiment is known as the variable.
3. Factors that are kept constant throughout an experiment are referred to as .
1. Design a simple experiment to test the effect of temperature on the rate of sugar dissolving in water. Identify the independent variable, dependent variable, and at least two controlled variables.
1. It is good scientific practice to have multiple independent variables in a single experiment to save time.
True
False
2. A placebo effect is an example of a controlled variable in a medical study.
True
False
Match each term with its correct definition.
1. Independent Variable
a. The factor that is measured or observed
2. Dependent Variable
b. The factor that is changed by the experimenter
3. Controlled Variable
c. Factors kept the same in an experiment