These can be gathered in the same manner as listed in the procedure below. Tape a set of each person s fingerprints to an index card and write their name on it. If you d like you can use aliases . Tape a fingerprint from 5 of the people to the large container you have gathered. The fingerprints on this container will be clues in a crime scene.
Most fingerprints have patterns of ridges separated by valleys.
In the valleys liquid is produced. Many people think this is oil, but it is actually sweat. When the fingers apply pressure to an object a print of the ridge and valley structure is left. These prints may remain on the object for years if they are not disturbed. Students will be taking their own fingerprints and will need to identify distinguishing characteristics.