Model of the Kidney

Endocrine System

Kidney Filtration

Materials

Cheese cloth

1 pound of sand

food coloring

coffee filter

2 jars

Instructions

#1 fill a gallon of water with a pound of sand and 4-6 drops of food coloring

#2 put cheese cloth over jar number 1 and a coffee filter over jar number two

#3 pour mixture into both jars

Results

if done right jar #1 should not filter very well and the water should be dirty. Jar #2 should filter very well and the water should be blue.

Conclusion

This experiment is designed to show you how the kidneys filter urine.