Sample Activity of Integration on LSC S1:Measurements, Density

Sample Activity of Integration
Most societies in Uganda depend on spring/well water for drinking. Most of the water is consumed directly without treating. Untreated water may contain any number of contaminants, such as: bacteria, viruses, parasites, heavy metals, pesticides, fertilisers, and human and animal waste.
These contaminants are rarely visible to the naked eye and may cause a variety of ailments, including: diarrhea, stomach cramps, vomiting and even pneumonia. Taking water that is contaminated has resulted in diarrheal illnesses and enteropathy with the heaviest impact upon children below the age of five in your village.

A water bottling company in your village wishes to come up with a simple method of determining the purity of its water.
Task:
Using knowledge of density, make a presentation to help out.

Chapter 3 Summary
In this chapter, you have learnt:
The meaning of measurements, instances where it is applied and the
importance of measurements.
The fundamental quantities and instruments used to measure them.
Use appropriate instruments to measure physical quantities and express
them using appropriate units.
How to determine the volume of irregular objects and its density.
The meaning of fundamental and derived physical quantities and their examples.
The meaning of density, relationship between density and relative density of
substances and how to determine the density of different solids and liquids.