Blood Splatter

In our class we have been learning about forensic scientists. We become one today and, using watered down red paint, dropped the paint/blood onto A3 paper using pipettes. Our measurements at how high we dropped the paint/blood from were - 2cm, 10cm, 20cm, 50cm, 100cm and 150cm. 150cm was obviously the biggest and 2cm the smallest. Between 50 and 100 centimeters there was very little distance which was surprising.

Blood Splats

WALT: Analyse blood splats and explain the details.

Height	Analysis
2cm	Diameters: 1 cm and 0.8 cm Shape: Oval/egg Colour: Dark red Density: thick throughout the shape
10cm	Diameters: 1.2 cm and 0.8cm Shape: Circle with a point at one end Colour: Dark red at the point but lighter towards the circular end Density: thick throughout the shape
20cm	Diameters: 1.3cm and 1.3cm Shape: Circle Colour: Dark stripe in the middle fading towards the edges Density: dense in the middle stripe but not on the edge
50cm	Diameters: 1.4cm and 3cm Shape: Circle with disturbance from an object spreading down Colour: Faded red Density: thickness spread throughout the shape
100cm	Diameters: 1.4cm and 1.4cm Shape: Circle Colour: Dark red on one side light red on the other Density: dense on one side but not on the other
150cm	Diameters: 1.6cm and 1.6cm Shape: Circular gears Colour: Faded red in the middle strong dark red to the left and right Density: Dense on the left and right but not so dense in the middle