that there is a relationship between the two variables. This relationship can be used to predict how changes in one variable will affect the other variable.
An experiment is considered controlled when all variables are kept constant except for the one being tested. This allows researchers to isolate the effect of that specific variable on the outcome of the experiment. Controlled experiments help establish cause-and-effect relationships between variables.
The independent variable is the heat of the light bulb, the dependent variable is the heat absorbed by the wax substance (or other convective liquid) which makes the substances in the lamp move due to density convection.
The factor is called the independent variable. This is the variable that is deliberately changed by the experimenter in the experimental group to see its effect on the dependent variable.
Generally scientific experiments investigate the relationships between an independent variable and one or several dependent variables.Independent variables are regulated parameters and the outcome of the experiments do not affect these variables.The dependent variables are those variables which have some sort of relationship with the independent variable and it is the investigators task to determine the nature of this relationship.Any single scientific investigation must regulate only a single independent variable with all other independent variables held constant. This is done so that the investigator can correctly attribute an outcome as being due to the regulation of a single variable. For example, suppose you started watering your potted plants with a saline solution and you also began exposing them to very intense light. If you saw that the plant leaves changed colors you would not know which variable had the greater affect on this color change. Did both variables even affect the leaf or was it due to just one variable? which one? You would have to split the investigation into two investigations, each with a single independent variable.
I am pretty sure that it is the temperature which is applied to the substance. For example when heat is applied to a solid it melts, causing it to change from one phase to another. Also when a liquid freezes the temperature drops and it converts into a solid.
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The experiment shows exactly what your title says!
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The experiment demonstrates a direct cause-and-effect relationship between the two variables, with no interference from other variables. This suggests that changes in the dependent variable can be attributed solely to variations in the independent variable.
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