________ Is Used in a Barometer Because ________

question 169

Multiple Choice

________ is used in a barometer because ________.

• A) Water; it is liquid at normal air temperature
• B) Water; it is denser than mercury
• C) Mercury; it will rise more than water will under the same air pressure
• D) Mercury; it is denser than water

---

Definitions:

Independent Variable

The variable that is manipulated in an experiment to see its effect on a dependent variable.

Interactions

In research, refers to the way that different factors or variables influence each other, often changing the outcome or effects when combined.

Internal Validity

The extent to which a study can prove that a cause-and-effect relationship exists between the tested variables, excluding the influence of external factors.

Nonmonotonic Relationship

A relationship between two variables where the direction of the effect changes over the range of the variable, meaning it can increase then decrease, or vice-versa.