First we rubbed our fingers on our nose because the nose has the most oil.Then we pressed our fingers on the glass. Next we got the black powder and rubbed the brush into the glass cup to develop the fingerprints.We got tape and pressed it on the fingerprints so the fingerprints will form. Miku From this study I know now that scientists use black powder to develop fingerprints (some) to solve crime but not all fingerprints help solve crime. Rachel My favorite part was developing latent fingerprints cause I thought it was awesome to see fingerprints with black powder.It felt like i was in a real science lab.
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AuthorsThe fourth grade students in Mrs. Sanchez's class. Archives
October 2021
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