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<h1>🧪 Water Cycle in a Bag</h1>
<h2>Week 22 — Wednesday | Hands-On Water Cycle Experiment</h2>
<h3>📖 Reading Time</h3>
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<p>The <strong>water cycle in a bag</strong> is a simple experiment that lets you see the water cycle happening right on your wall. By creating a small model, you can watch evaporation, condensation, and precipitation all in action. This experiment uses everyday materials to show how water moves in nature.</p>
<p>Here is how it works: When you seal water inside a clear plastic bag and place it in the sun, the <strong>sun</strong> warms the water just like it warms oceans and lakes. The warm water turns into <strong>water vapor</strong> through evaporation. You cannot see the water vapor, but it is rising inside the bag. As the water vapor touches the cooler plastic at the top of the bag, it cools down and turns back into tiny liquid water droplets. This is <strong>condensation</strong>. You can see the droplets forming on the plastic, just like clouds form in the sky.</p>
<p>As more and more droplets collect at the top of the bag, they get bigger and heavier. Eventually they become too heavy to stay on the plastic, so they fall back down to the bottom of the bag. This is <strong>precipitation</strong>, just like rain falling from clouds. Once the water collects at the bottom again, the sun warms it once more, and the cycle repeats. This tiny bag shows the exact same process that moves water around our entire planet!</p>
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<h3>✏️ Reading Questions</h3>
<p><strong>1. What does the sun represent in the water cycle in a bag experiment?</strong></p>
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<p><strong>2. Where do you see condensation in the bag?</strong></p>
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<p><strong>3. What causes precipitation in the bag experiment?</strong></p>
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<p><strong>4. Explain how the water cycle in a bag is similar to the water cycle on Earth. Name all three stages and how they match.</strong></p>
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<h3>📝 Vocabulary Grid</h3>
<p>Write a definition or draw a picture for each word.</p>
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<div class="vocab-card"><strong>🔬 Experiment</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>📋 Observation</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🎯 Hypothesis</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>📊 Data</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🔄 Cycle</strong><div class="line-row"></div></div>
<div class="vocab-card"><strong>🌡️ Temperature</strong><div class="line-row"></div></div>
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<h3>🧪 Your Water Cycle Experiment</h3>
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<p><strong>Materials needed:</strong> Clear plastic zip-top bag, blue food coloring, water, marker, tape.<br>
<strong>Steps:</strong> 1) Draw the sun on one corner of the bag. 2) Fill the bag one-quarter full with water and blue food coloring. 3) Squeeze out the air and seal tightly. 4) Tape the bag to a sunny window. 5) Observe and record what happens each hour for at least three hours.</p>
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<p><strong>Before you start: Write your hypothesis. What do you predict will happen?</strong></p>
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<tr><th style="width: 90px;">Time</th><th>What Do You See?</th><th style="width: 140px;">Water Cycle Stage</th></tr>
<tr><td>Start (0 min)</td><td style="height: 22px;"></td><td></td></tr>
<tr><td>30 minutes</td><td></td><td></td></tr>
<tr><td>1 hour</td><td></td><td></td></tr>
<tr><td>2 hours</td><td></td><td></td></tr>
<tr><td>3 hours</td><td></td><td></td></tr>
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<h3>🎨 Draw Your Results</h3>
<p><strong>Draw a picture of what your bag looks like after three hours. Label where you see evaporation, condensation, and precipitation happening.</strong></p>
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<h3>📊 Experiment Conclusion</h3>
<p><strong>Answer each question about your experiment results.</strong></p>
<p><strong>Was your hypothesis correct? Explain why or why not.</strong></p>
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<p><strong>Which water cycle stage was the easiest to see? Why?</strong></p>
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<p><strong>What would happen if you taped the bag in a dark closet instead of a sunny window?</strong></p>
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<h3>🏗️ Act Out the Water Cycle</h3>
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<p><strong>Gather at least five people (family members, friends, or stuffed animals). Assign each person a role: Sun, Water in Ocean, Water Vapor, Cloud, and Rain. Take turns acting out the complete water cycle, with each person describing what they are doing at their stage. Then draw your performance below.</strong></p>
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<h3>📋 Performance Roles</h3>
<p><strong>Fill in what each role says or does during the performance.</strong></p>
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<tr><th style="width: 120px;">Role</th><th>What They Say or Do</th></tr>
<tr><td>☀️ Sun</td><td style="height: 22px;"></td></tr>
<tr><td>🌊 Water in Ocean</td><td></td></tr>
<tr><td>💨 Water Vapor</td><td></td></tr>
<tr><td>☁️ Cloud</td><td></td></tr>
<tr><td>🌧️ Rain</td><td></td></tr>
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<h3>✅ True or False — Circle Your Answer</h3>
<p><span class="circle-box"></span> <strong>1.</strong> The water cycle in a bag shows all four stages of the water cycle.</p>
<p><span class="circle-box"></span> <strong>2.</strong> In the bag experiment, the sun heats the water to cause evaporation.</p>
<p><span class="circle-box"></span> <strong>3.</strong> Condensation forms on the bottom of the bag first.</p>
<p><span class="circle-box"></span> <strong>4.</strong> Water droplets falling inside the bag represent precipitation.</p>
<p><span class="circle-box"></span> <strong>5.</strong> A hypothesis is a prediction you make before an experiment.</p>
<p><span class="circle-box"></span> <strong>6.</strong> The water cycle in a bag would work the same in a dark closet.</p>
<p><span class="circle-box"></span> <strong>7.</strong> Blue food coloring helps you see the water better.</p>
<p><span class="circle-box"></span> <strong>8.</strong> The water cycle in a bag repeats over and over, just like the real water cycle.</p>
<h3>✏️ Fill in the Blanks</h3>
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<p><strong>Word Bank:</strong>
<span>evaporation</span><span>condensation</span><span>precipitation</span><span>collection</span><span>hypothesis</span><span>observation</span><span>sun</span><span>water vapor</span>
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<p>1. The ________________ provides the energy that powers the water cycle.</p>
<p>2. When water turns into invisible gas, it is called ________________.</p>
<p>3. A prediction you make before an experiment is called a ________________.</p>
<p>4. Water vapor cooling and forming droplets is called ________________.</p>
<p>5. Droplets falling from clouds is called ________________.</p>
<p>6. Information you gather during an experiment is called an ________________.</p>
<p>7. Water gathering at the bottom of the bag or in the ocean is ________________.</p>
<p>8. The invisible gas that rises from warm water is ________________.</p>
<h3>💭 Think About It</h3>
<p><strong>If you put ice in the bag instead of room-temperature water, how do you think the experiment would change? Would the water cycle still happen? Explain your thinking.</strong></p>
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