Science: Variables, Control Group, Controls

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated in an experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is a control group?

Back

A control group is a standard of comparison in an experiment that is not exposed to the independent variable, allowing for a baseline to measure the effects of the independent variable.

Front

Why is it important to test only one variable at a time in a controlled experiment?

Back

Testing only one variable at a time ensures that any changes in the dependent variable can be directly attributed to the independent variable, eliminating confusion from multiple influences.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables, often stated in an 'if-then' format.

Front

What is the purpose of a controlled experiment?

Back

The purpose of a controlled experiment is to isolate the effects of the independent variable on the dependent variable while keeping other variables constant.

Front

What is a variable in scientific experiments?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types and can affect the outcome of an experiment.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities (e.g., color, texture), while quantitative data involves numerical measurements (e.g., height, weight).

Front

What is a scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is the role of controls in an experiment?

Back

Controls are used to minimize the effects of variables other than the independent variable, ensuring that the results are due to the independent variable alone.