suggested grade levels: 2- 6
view Idaho achievement standards for this lesson
|4 clear plastic, 2-liter soda bottles||4 bowls||tape||plywood||saw||hammer||nails|
As a precursor to this activity, use the Digital Atlas of Idaho.
To get there: Click on Atlas Home, Hydrology, Basics, then on FAQ. This site will give you some background on hydrology so you will be better prepared to do this activity with your students.
Review with your class:
1. What is The Hydrologic Cycle?
2. What is Groundwater?
3. What is an Aquifer?
This can be done before class:
1. Use the scissors to carefully cut the bottoms off of the bottles.
2. Build a small plywood stand or just use some ringstands (from chemistry teacher) to hold the bottles upside down.
3. Tape a piece of gauze over the mouth of each bottle. Fill one with gravel and sand, a second with sand and topsoil, the third with topsoil and clay, and the fourth with clay. Place bowls under each mini-aquifer to catch the drippings.
4. Pour one cup of water into the top of each bottle at exactly the same time. Observe the length of time it takes water to pass through each type of soil mixture.
Questions for discussion:
1. Which type of soil did the water pass through the fastest?
2. Which type of soil held the most water?
3. What characteristics of the soil determine how well it holds water? (density, particle size, space between particles)
4. Do you think farmers need to know which type of aquifer holds water best and which loses it fastest?
These are links to access the handouts and printable materials.