Sole Searching
About this activity
We need your help to investigate how footwear marks are made. This activity will help us discover what marks are made by different shoes as people move in different ways. It's suitable to use as a classroom activity or try at home and we expect this activity to take around an hour (including discussion).
This activity is part of the British Science Week 2019 pack of experiments for Secondary Schools!
Instructions
Please carry out this activity outside. A flat surface will make the best prints!
Our instructions are available in video and text form.
Instructions
1. Take photos of the sole of your shoe, each side of the shoe and the top of the shoe.
2. Lightly paint the bottom of your shoe sole with the oil – don’t use too much. You might get a clearer print if you stand on a scrap piece of paper to remove excess oil.
3. Put on your shoe and stand on the paper to make a single shoeprint. Try and get the shoeprint all onto one page. Don’t forget to clean your shoes!
4. If you can’t see the mark then brush some of the hot chocolate powder onto the print and that may help show it clearly. Blow away any excess powder.
5. Make different shoeprint marks by running, jumping and walking on the paper (use a new piece of paper each time). The easiest way to set up the experiment to run is to take a test run from a marked starting place and get a friend to put down the paper where you place a foot on the floor. Tape down the paper and run again, you should land on the paper!
6. Repeat each shoeprint for each condition 6 times so that you can see variations that may happen, even with the same shoe. Make sure you write on the paper with the print which one is which (for example, Jumping 1, Jumping 2).
7. Take images of your prints with the scale provided. Put your ruler down beside the shoeprint so that it is framed within the ‘L’ shape of the ruler. Stand above the print and holding the camera straight over the print so that it is at 90 degrees. Use a tripod if you have one.
9. Don't forget to let others know you have participated in the experiment on Twitter @LRCFS #forensicshoeprints and on Facebook :)
Can you tell us?
- Are your shoe prints always the same? Do the marks that you see look different across the 6 repeats for each activity (walking, standing, running, jumping)?
- Can you identify the shoes that made the shoe prints from the picture of the sole of the shoe?
You can try
- Look at your footwear impression. Can you identify characteristics in the sole patterns?
- Can you see any other characteristics such as cuts or wear marks of your shoe soles?
- Try this activity with other kinds of shoes to see the difference. Do all of your shoes show the same wear characteristics?
Submit Your Data
We would love for you to contribute to our work on footwear marks by submitting your photographs to us.
