science lab 4
the worksheet is attached
Complete the worksheet and return back on the worksheet
Analyzing Water Usage
‘Being green’ is commendable, but I hope that people don’t take too much pride and self-adoration because they shut off the water when they brushed their teeth. The truth of the matter is, conservation alone will do little to save our planet. Bigger steps need to be taken; and they need to be taken soon.
~ Naveen Jain
According to the United States Geological Survey (USGS), the government agency that oversees
United States
United States
In this exercise we will look into how has water usage changed in the
United States
• Analyze changing trends in water usage over a 50-year period.
• Determine which categories use the most water per day.
• Discuss conservation methods that might decrease water use.
Materials: Calculator
Procedure:
1. Study the bar graph, based on data from the USGS. Look for patterns in water usage. Do certain categories consistently use more water than others? Have some categories increased their water use more quickly than others?
2. Create a data table based on the graph. Place the eleven time periods across the top of the table. List the five categories on the left side of the table. In the rows, write the total amount of water used per day by each category for the years listed.
3. Calculate the total amount of water used per day by all categories for each year. Add this information to the data table.