Oceans and Your Community

Today we started a new unit called Earth’s Fluid Spheres. In Chapter 1 “Oceans and Your Community” we’ll be doing our first Chapter Challenge (group project). In this challenge your will be creating a report to advise the state on whether or not they should hold a conference on how to prepare for an El Nino event. Your investigation will examine the causes of ocean circulation currents, the effects El Nino on these currents, food chains, and weather, and lastly what impacts this might have on Florida.

Chapter Challenges are long term projects, approximately 3 weeks. A single report will be produced per table and all students will share in the grade (some variation in grade may occur based on student contribution evaluations). During the 3 weeks classwork will supply the needed information for the report, however the report itself will be done as homework.

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Rain Water Collection

As part of our studies on the hydrosphere we’re trying to determine the amount (volume) of rain water that could be collected from the roof of our classroom building. So far students determined the average annual rainfall received in Winter Garden and the dimensions of the 400 building (see the gallery for pictures).

The challenge that remains is how to convert those measurements into typical units of volume (gallons or liters). Of course this might be complicated by having a mix of metric and standard measures (i.e. rainfall in inches and building dimensions in meters).

Looking for some extra credit? Then take this exercise one step further.

If the rate of rainfall is 1.5 inches per hour and it rains for 1/2 hour, how many 220 liter rain barrels will be required to collect all the run-off from the 400 building roof.

Submit your answer on a separate sheet of paper, showing all your calculations. Be sure to have your name (first and last), the date and period at the top of your paper and underline your answer. Turn in no later than Wednesday 9/26.

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Earth Systems Science

So what is Earth Systems and what are those “spheres” I keep talking about? You know those things I ask you to write about on the left side of your notebook. How do they interact?

While looking for different ways to show you the concepts and I came across this short video at Teachers’ Domain. Click on the image to view.

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A Dire Shortage of Water

If it were up to me, the weather would be hot and sunny every day.

Good thing it’s not up to me. Earth needs rain and snow.

Without a reliable supply of water, we would have nothing to drink, nothing to sustain our crops. Swimming pools would be empty. Lawns would have no grass. Electricity would be expensive. Plants would die; animals would follow.

During a drought, wetlands such as this area in Colorado could disappear, threatening the lives of many animals.

During a drought, wetlands such as this area in Colorado could disappear, threatening the lives of many animals.

Robert Sanders, Ducks Unlimited/U.S. Fish and Wildlife Service

Such a water shortage may sound extreme, but it’s happening right now in parts of the western United States. An area called the…. (more)

By Emily Sohn
Science News For Kids

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Water Resources and Your Community

When we started this activity we set 4 goals:

  • To develop an understanding of the distribution of salt and fresh water on the earth (how it’s spread out or separated)
  • To learn what sources of water we use in Winter Garden
  • To create a model of how water moves between reservoirs (places that hold water) within the water cycle
  • And to create a method of calculating the amount of fresh water that could be collected from the roof of our classroom building.

We have finished the first 2 and are now going to move on to the hydrologic or water cycle. Here’s a short movie clip showing the cycle in motion.

Follow this link for more information. This site will require registration if you have not already done so. Give it a try!

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