It's Water-Wise Wednesdays with Frannie the Fish! {TAPS Manual Part 4: Sinkholes}

Frannie's friends at the Groundwater Foundation recently published the second edition of the Training About Protecting the Source (TAPS) Manual. The manual guides users through hands-on activities that explore potential threats to groundwater and challenges them to think about what can be done to protect this key drinking water source.

This manual can be used inside the classroom and is aligned to the national Next Generation Science Standards, but Frannie loves just learning about groundwater, no matter where she is. For the next few weeks, you can join her as she works through the different activities. 

Frannie will be using the Groundwater Foundation's Awesome Aquifer Kit, but if you don't have one, you can follow along with materials that might be found around your home. This is the second part of Frannie's exploration of the TAPS Manual. You can follow the link to see what she learned about leaky underground storage tanks, improperly abandoned wells and the over-application of fertilizer.

Today's activity is....Sinkholes.

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A sinkhole is a depression that is formed as underlying limestone or a similarly soft rock is dissolved by groundwater. Typically, sinkholes form slowly so that the top layer of land stays intact for a while after the rock below dissolves. Sinkholes vary greatly in area and depth and can be small and shallow or they may be very large. Sinkholes form a direct path to groundwater through which contaminants can easily enter.

For this activity, you will need:

• Awesome Aquifer Kit, OR
• Plastic box
• Gravel
• Sugar cubes (at least 12 cubes)
  
• 16 oz cup of water slightly above room temperature
• Small plastic toy or house (optional)

Activity Steps

1. Read through all the instructions first before you begin to build the model. Make sure you have all the needed materials and supplies.

 

2. Fill the plastic box with gravel until it is about ¼ full.

 

3. Add water so that half of the rocks are covered. (This will represent an aquifer.)

 

4. Place sugar cubes on the gravel, next to one side of the plastic box. The sugar cubes should be at least three cubes across, two cubes wide, and two layers deep. The sugar cubes simulate layers of limestone.

 5. Add more gravel on top to cover the sugar cubes completely. You can either create a hill over the sugar cubes or continue to add gravel so that surface of the model is level.

 

6. If you have a small plastic toy animal or house, place it on top of the gravel directly above the sugar cubes.

  

7. Pour or spray water (preferably warm water) over the buried sugar cubes to simulate rain. Watch and wait.

Frannie noticed that the warm water slowly dissolved the sugar cubes beneath the gravel. The surface of the gravel remained level for a little bit, but eventually it collapsed into the vacuum that was left by the sugar. Like sugar cubes, soluble geologic materials can dissolve over time due to natural causes or human impacts such as over-pumping and over development. Once a sinkhole appears, it can become a direct line for contaminants to enter the water below.

It's Water-Wise Wednesdays with Frannie the Fish! {TAPS Manual Part 2: Over-Application of Fertilizer}

Frannie's friends at the Groundwater Foundation recently published the second edition of the Training About Protecting the Source (TAPS) Manual. The manual guides users through hands-on activities that explore potential threats to groundwater and challenges them to think about what can be done to protect this key drinking water source.

This manual can be used inside the classroom and is aligned to the national Next Generation Science Standards, but Frannie loves just learning about groundwater, no matter where she is. For the next few weeks, you can join her as she works through the different activities. 

Frannie will be using the Groundwater Foundation's Awesome Aquifer Kit, but if you don't have one, you can follow along with materials that might be found around your home. This is the second part of Frannie's exploration of the TAPS Manual. You can follow the link to see what she learned about improperly abandoned wells.

Today's activity is....Over-Application of Fertilizer.

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Fertilizers promote plant growth and green lawns by helping plants meet their nutrient needs, primarily for nitrogen, phosphorus, and potassium. Plants, however, are limited in the amount they can absorb and use. Fertilizers applied in excess can soak down into the groundwater or run off into surface water bodies. This pollution of surface and groundwater can impact our drinking water supplies.

For this activity, you will need:

• Awesome Aquifer Kit, OR
• Plastic box
• Gravel
• Plastic tube
• Hand pump or Syringe
• Nylon
• Rubber band
• 1 packet or 1 tablespoon of colored powdered drink mix (ex. Kool-Aid, Gatorade, etc)
• 16 oz cup of water

Activity Steps

1. Read through all the instructions first before you begin to build the model. Make sure you have all the needed materials and supplies.

 

2. Fill the plastic box with gravel until it is about ¼ full.

 

3. Add water so that half of the rocks are covered. (This will represent an aquifer.)

 

4. Create a well by covering the end of the plastic tube with nylon, securing it with a rubber band.

 

5. Insert the well, with the well screen on the bottom, near one corner of the plastic box. Push the well down so that it reaches the bottom of the model.

 

6. Add more gravel until the box is about ½-¾ full. The surface of the gravel should be fairly level across the box.

 

7. Sprinkle ½ a packet, about 1 tablespoon, of powdered drink mix (i.e. Kool-Aid) 

on the surface of the gravel to simulate fertilizer.

 

   

8. Pour water on the surface of the gravel to simulate rain.

 

9. Make observations

 

10. Pump the well by inserting the tip of the syringe into the well (plastic tube) or attaching and pumping the hand pump.

 

11. Observe what happens to the fertilizer and water when the well is pumped.

Frannie observed that once the water "rained" over her aquifer, the colored drink mix, which represents fertilizer, quickly mixed with the recharge and infiltrated into the groundwater below. Very quickly, the whole aquifer was contaminated with the red drink mix. When she tried to pump groundwater out, Frannie wasn't able to get any clean water. 

Frannie knows that fertilizers help plants grow healthy and strong, but there are ways and times to apply them responsibly so that plants can absorb all of the nutrients they need without any extra leaching in the groundwater below.

It's Water-Wise Wednesdays with Frannie the Fish! {Video Learning Series: Awesome Aquifer Kit Training Videos}

This is the fifth blog in a series of video learning opportunities from the Groundwater Foundation. Click to see the previous blogs on the Groundwater Foundation, how the Awesome Aquifer Kits are made, educator toolkits, and the Groundwater Guardian program.
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Last week, Frannie shared the videos demonstrating some of the many educational resources that are offered as a part of the Groundwater Foundation's educator toolkits.

This week, Frannie is excited to share three brand new videos all about the activities included in the Awesome Aquifer Kit! The Awesome Aquifer Kit is one of the featured modeling tools included in the educator toolkits. The Awesome Aquifer Kit Guide includes a glossary of key groundwater terms and six activities, aligned to the Next Generation Science Standards, to demonstrate basic concepts of groundwater, how wells work, and the movement and treatment of contaminants within groundwater.

The new Awesome Aquifer Kit videos on the Groundwater Foundation's YouTube channel break down each activity step by step and provide tips on how to expand the lesson for more advanced students. Learn how the Awesome Aquifer Kits can help you "see" groundwater and consider getting your very own at AwesomeAquifer.com!

It's Water-Wise Wednesdays with Frannie the Fish! {Video Learning Series: Groundwater Education Toolkit Training Videos}

This is the fourth blog in a series of video learning opportunities from the Groundwater Foundation. Click to see the previous blogs on the Groundwater Foundation, how the Awesome Aquifer Kits are made, and the Groundwater Guardian program.
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Groundwater education is so important in the process of protecting this precious resource. Integrating the Groundwater Foundation's educational tools is easier than ever with a new series of training videos.

Each video focuses on a different resource within the educator toolkit. The first video in the series outlines what groundwater is, why groundwater education in our classroom is so important, and sets up how the training videos will help educators bring groundwater models into their classroom.

The following three videos in the series focus on the Hydrogeology Challenge, an online groundwater model that presents users with a map of an area with wells and some well logs. Users walk through the same calculations that professional hydrogeologists use to calculate groundwater flow direction, slope, and speed. In the classroom, teachers can challenge their students even further with an Applied Knowledge Scenario, which asks the students to use the calculations to evaluate a potential threat to groundwater. The Hydrogeology Challenge and Applied Knowledge Scenarios is best used with upper level students to show them how algebra and geometry can be used with science to solve real-world problems.

The rest of the videos in the series shine a light on the many different activities that can be done with the Awesome Aquifer Kit. Faithful readers of Frannie's blog may remember the blog series she did a while ago, demonstrating everything from the connection between groundwater and surface water to how permeability affects groundwater's ability to flow within different soils. The videos provide top tips on how use the kits, maintain them, and make them a regular part of a teacher's water science unit.

You can watch each video on its own or watch them all in a playlist on the Groundwater Foundation's YouTube channel.