Scientific Study – Class 10
Very Short Questions
What is scientific learning?
It is the systematic process of investigating problems and establishing facts through experiments and testing.
What is a variable?
Any factor, condition, or trait that can be manipulated or changed during an experiment.
What are two features of variables?
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- They are controlled to observe the effect of independent variables;u00a0
- They can be quantified or measured.
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Name three types of variables.
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- Independent (the factor being changed),
- Dependent (the factor being measured), and
- Control (the factors kept constant).
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Define independent and dependent variables.
The independent variable is the one modified by the experimenter, while the dependent variable is the one observed or measured to see the outcome.
What is “reproducibility”?
The ability of a study to yield consistent results when repeated, which promotes transparency and builds confidence in research findings.
What is a controlled variable?
A variable that is kept constant by the researcher throughout the experiment to prevent it from affecting the results.
How many dependent variables are needed in an experiment?
Typically, one is used to ensure clarity, though an experiment may involve two or more if necessary.
What is the variable type if its magnitude remains constant?
A controlled variable.
If a scientist turns a bulb on/off to check an earthworm’s behavior, what is the independent variable?
The state of the light (or the intensity of light) is the independent variable.
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