Locrard's principle

                                                               Locard's principle
  Locard speculated that every time you make contact with another person, place, or thing, it results in an exchange of physical materials.What a criminal does, by coming into contact with things, a criminal can leave all sorts of evidence, including DNA, fingerprints, footprints, hair, skin cells, blood, bodily fluids, pieces of clothing, fibers and more. At the same time, they will also take something away from the scene with them.

                                   what can be left behind the at the crime scene.



finger prints, shoes prints, tools left behind, blood, fibers off clothing, broken fingernails, identification, DNA, hair, evidence of cleaning up ,witness, CCTV, leave family number behind, licence plate, clothing, body, bullets, knife, tyre tracks

                                              who collects the evidence? Forensic technician
 what do they use? Camera, numbers, gloves, stuff for moulds of footprints and tyres, tweezers,bags for samples

paper planes

Aim: I want to find out how to make a paper plane.

Equipment:  paper (any type).

Method:
1.fold the paper in half then open the paper back up
2. fold to sides in to the middle. fold the corners again
3.fold the tip down
4. fold it in half


                                                                 Results 
                                          My plane didn't go the ten meters i wanted it to go.Mine only went around 2 meters of the ten

Fantastic forces

1. what are forces?  mental or moral strength or power
2.why are forces important? force to push and pull us back. we need forces to sit on chairs 

             

                                     Planes 

4 . 

5. the paper plane was first called the paper dart and was made out of folded paper 

6I think this will work better then the others because it is light and i think will go longer