Question

3. When a blood drop lands on a surface at a 90 degree angle, what shape is the drop in typically?

Answer 1

A blood drop landing on a flat surface at a 90 degree angle typically forms a circular shape due to surface tension, which minimizes the surface area of the drop.

Step-by-step explanation:

When a blood drop lands on a surface at a 90 degree angle, the shape of the drop is typically a nearly perfect circle on a flat surfaced. This circular shape results from the property of surface tension, which acts to minimize the total surface area of a liquid volume in contact with a solid. The same property of surface tension that shapes red blood cells into biconcave discs also influences the drop's shape, aiming to reduce surface area to volume ratio. On a non-absorbent surface, this results in a circular outline. However, the final shape of the blood drop can also be affected by the type of surface on which it lands and other environmental conditions such as temperature and humidity.

Answer 2

is it in a triangle
if you imagen it as a rain drop
and then it hit something it would go to a sort of triangular shape