The independent variable in this experiment is the temperature. This is the variable that is manipulated or controlled by the researcher to observe its effect on the volume of gas.
The manipulated variable in an experiment with a water rocket could be the amount of water or air pressure used to launch the rocket. This variable is intentionally changed by the experimenter to observe its effect on the rocket's performance.
A dependent variable is the outcome or response that is measured in an experiment or study. It is the variable that is affected by changes in other variables, known as independent variables. The dependent variable is what researchers are trying to understand or predict.
The experimental variable of freezing water would be the temperature at which the water freezes. By changing the temperature, you can observe how it affects the freezing point of water.
A constant in an experiment is something that does not change, such as the temperature, pressure, or a control variable that is kept the same throughout the experiment to ensure accurate results.
A dependent variable depends on the independent variable. If you are doing an experiment about how temperature affects the heat of water then the independent variable would be the temperature, as that is what you are going to change, and the dependent variable the water as the temperature of the water depends on the temperature surrounding it.
Temperature.
The dependent variable in this experiment would be the time it takes for the sugar to completely dissolve in hot water.
manipulated variable
The independent variable in this experiment is the amount of table salt added to the boiling water. The effect of adding salt to the water is to raise the boiling point of the water, therefore increasing the temperature at which the water boils.
Your experiment should show what the effect of a variable is on the outcome of the experiment. If you have two variables, you don't know which variable contributed what to the outcome. For example: if want to see the effect that temperature has on water, you'll want to vary your temperature (temperature is a variable) and record your observations on the water. If nothing else is varied during your experiment and you do this experiment in your kitchen at sea level, then you may learn for instance that as you bring water temperature up from -60C to 0C it melts . If, however, you also vary your pressure (pressure is a SECOND variable) during this test, then you may find that if your pressure is 100Pa, as you bring water from -60C, it turns to vapor at ~25C!
The answer is variable.
The independent variable in this experiment is the temperature. This is the variable that is manipulated or controlled by the researcher to observe its effect on the volume of gas.
temperature
dependent variable
If you are not doing an experiment, there is no variable.
The Temperature is the Independent Variable (50 degrees, 100 Degrees etc.) Whatever happens as a result of the temperature change is the dependent variable.