Variables in Experiments
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Variables in Experiments starts at 6 and continues till grade 12.
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Describe what a fair test is in the context of scientific experiments.
Describe what would happen if controlled variables are not kept constant in an experiment.
Describe what would happen if more than one variable is changed in an experiment.
Explain the difference between an independent variable and a dependent variable.
In a study to see if music affects plant growth, what is the dependent variable?
In an experiment testing the effect of sunlight on plant growth, what is the independent variable?
In an experiment to test the effect of fertilizer on plant height, what is the dependent variable?
In an experiment to test the effect of temperature on the rate of photosynthesis, what is the independent variable?
Which of the following best describes a controlled variable? (1) The variable that is measured (2) The variable that is changed (3) The variable that is kept constant (4) The variable that is ignored
Which of the following is an example of a controlled variable in an experiment testing the effect of light on plant growth? (1) Amount of water (2) Amount of light (3) Height of plant (4) Number of leaves
Which of the following is an example of a dependent variable? (1) Amount of fertilizer used (2) Height of the plant (3) Type of soil (4) Amount of sunlight
Which of the following is NOT a controlled variable in an experiment testing the effect of water on plant growth? (1) Type of plant (2) Amount of water (3) Amount of sunlight (4) Type of soil
Fill in the blank: In a fair test, all variables except the __________ variable should be kept constant.
Fill in the blank: In a fair test, only __________ variable should be changed at a time.
Fill in the blank: In an experiment, the variable that is measured is the __________ variable.
Fill in the blank: The variable that is kept the same in all groups of an experiment is called the __________ variable.
True or False: Controlled variables can affect the outcome of an experiment if not kept constant.
True or False: The dependent variable depends on the independent variable.
True or False: The dependent variable is also called the manipulated variable.
True or False: The dependent variable is the variable that is measured in an experiment.
