Week+4+Contact+Traces+Blood

=**Weekly Content**= The third contact trace we will learn about is blood. Blood is the most important fluid that forensic scientists can analyse from a crime scene. This week will we learn about blood groups, blood splatter analysis, and the importance of DNA in identifying suspects.

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=Practical= Do you know what effect height has on the shape of a blood splatter? Find out for yourself in this week's practical where you will investigate how different variables affect blood splatter patterns.



=Reading and Other Media= This article provides an insight into how forensic science is used to collect and analyse information, including contact traces, from car crashes []

=Homework= 1. Complete the looking at blood group exercise. 2. Write a short description of a criminal case in which blood splatter played an instrumental part in the forensic evidence. 3. Complete the questions from the //Looking at Blood// practical (above).

=Student Content= Got something you would like to add? A video, webpage, or comment you would like to make. Go for it!