Question

the first step of a scientific investigation is to observe. 2. what is a hypothesis and what makes it \educated\? 3. explain what a \fair experiment\ is and what \controlled variables\ are.

Explanation:

A hypothesis is a proposed explanation for a phenomenon. It is "educated" as it is based on prior knowledge, observations, and research. A fair experiment is one where only the variable being tested is changed, while all other factors (controlled variables) are kept constant to ensure accurate results.

Answer:

1. A hypothesis is a proposed explanation for a phenomenon. It is "educated" because it is grounded in prior knowledge, observations, and research.
2. A fair experiment is one where only the independent variable is manipulated while all other factors (controlled variables) are held constant to accurately determine the effect of the independent variable on the dependent variable.