Zamearea Simpson _ Student - GarnerHS - Plants and Snails.pdf

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Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: aerobic respiration, bromothymol blue (BTB), carbon dioxide-ox... ygen cycle, indicator, interdependence, photosynthesis Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What important gas do we take in when we breathe? 2. Why don’t we run out of the important gases that we need to stay alive? Gizmo Warm-up In the Plants and Snails Gizmo, each of the test tubes contains water and a small amount of bromothymol blue (BTB). BTB is a chemical indicator. An indicator changes color when the chemicals in the water change. 1. With the lights set to on, drag a snail into one test tube and a plant into another. Press Play ( ). After 24 hours, what is the color of each tube? 2. Select Show oxygen and CO2 values. Place the O2 /CO2 probe in each tube. The probe shows the levels of two gases, oxygen (O2 ) and carbon dioxide (CO2 ), in the tubes. We call these amounts the gas levels. Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved Name: Date: Oxygen Because as times goes on the atmosphere and plants produce more of the gases we need to stay alive yellow and blue A. When the water turns blue, which gas is most common? Oxygen B. When the water turns yellow, which gas is most common? Carbon Dioxide C. What does it tell you when the water is green? There is an equal amount of o2 &CO2 Question: What gases do plants and animals take in and what do they give off? 1. Collect data: Use the Gizmo to learn what gases plants and animals take in and give off. Try it in both light and dark. Record your results below. If you do more than five experiments, write your extra results in your notebook or on separate sheets of paper. 2. Analyze: Study your data on gases given off by plants. 3. Analyze: Study your data on gases given off by animals. 4. Infer: Describe the carbon dioxide-oxygen cycle by completing the sentences below: Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved Activity A: Gases in and gases out Get the Gizmo ready: ● Click Reset ( ). ● Clear all of the test tubes. ● Turn on Show oxygen and CO2 values. What is in the tube Lights: on/off Results Snail off Tube turned yellow Snail on tube turned yellow Elodea springs off tube remained the same (green) Elodea Springs on tube turned green A. What gas do plants give off in the light? Oxygen B. How about in the dark? Carbon Dioxide A. What gas do animals give off in the light? Carbon Dioxide B. How about in the dark? Carbon Dioxide C. How do these results compare to your plant results? Plants give off oxygen and animals dont [Show More]

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