Final answer:
To write a hypothesis, first ask a scientific question and identify the dependent variable. Then, formulate a hypothesis that includes an independent variable and provide a reason for it.
Step-by-step explanation:
In a scientific investigation, a hypothesis is a tentative explanation for an observation or set of observations. It is a possible answer to a scientific question that is based on scientific knowledge and is logical. To write a hypothesis using words like question, independent variable, dependent variable, and reason, you can follow these steps:
- Ask a scientific question and identify the dependent variable (DV), which is the effect or thing that is changed.
- Formulate a hypothesis that includes an independent variable (IV), which is the cause of the change. The hypothesis should be a declarative sentence that sounds like a fact, but it is not. It should be testable and easily turned into if/then (predictive) yes-or-no questions.
- State your reason or rationale for proposing the hypothesis based on objectivity and reason.