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Do people who live close to the sea consume more or less water than those who live inland?Featured science projectScience project video

Abstract

This survey was done to ascertain the difference in the water consumption of people who live near the ocean and those who live further away.

Hypothesis

People who live near the oceans will consume less water.

Scientific Terms

Rain cycle, evaporation, condensation, precipitation, waste water treatment

Background

Facts about water

Water is very important for life on earth. All life on earth requires water to survive. Water is used by us in many ways. Besides drinking water, we use it for cleaning, bathing and washing, growing crops, generating power and even putting out fires. Although almost 70% of the earth is covered in water, 98% of this water cannot be consumed by us, primarily because it is salt water. Less than 1% of the world’s water is fresh water that is safe for consumption.

A person may survive for up to a month without any food but he will not be able to survive more than a week without water. This is because over 60% of our body consists of water. Our blood cells consist of 92% water, our muscles and brains consist 75% water, and even our 22% of the weight of our bones comes from fluids within.

The fresh water on our planet is naturally replenished through the rain cycle. Water evaporates from the oceans and condense into cloud formations. These clouds move towards land and precipitate as rainfall. Rain water is either trapped in fresh water lakes or flows back to the oceans through the rivers.

Alas, our consumption of water is higher than the rate at which fresh water is replenished, making it necessary for us to conserve water. Our drinking water is processed in water treatment plants before it is pumped into our homes. Water that is discharged from our homes is also treated in septic tanks and water treatment facilities before being returned to the environment.

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Complexity level:
8
Project cost ($):
30
Time required:
1 day to prepare, 7 days for the science project experiment
Material availability:
Easily found
Safety concerns:

None