Forensic investigator Adams is working on a crime scene involving the use of a very rare explosive. She already knows that she needs to find out who set the explosive. Following the scientific method what would be her next step in solving this mystery? Form a hypothesis about the person who bought the explosive
Conclude that the homeowner set the explosive
Collect some data about the distribution of the explosive
Hand over her work to the police so that they can make an arrest

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Collect some data about the distribution of the explosive.

Explanation:

Following 9.06's Scientific Method Lab, we can see that what Adams has done is ask a question: who set the explosive?

The next step of the scientific method would be conducting research, followed then by forming a hypothesis. So the answer is collect some data about the distribution of the explosive, as that falls under conducting research.

(I'm literally taking the test right now, so if it's wrong, then bleh. I tried.)

its temperature is increasing. this causes molecular vibrations to increase.