VIEWS: 81 PAGES: 3 POSTED ON: 8/5/2012
Flip Science – “Balloon Rocket” By: Jaden Olson Part 1: Topic: Bases and Laws of Motion Subject: Science Materials: baking soda, vinegar, lemon juice, orange juice, water, measuring cup, measuring spoons, small bottle with a narrow opening (old soap bottle or water bottle would work), funnel, balloons (various sizes is optional), two clear glasses Grade Level Standards: 5th 5.3S.1 Based on observations and science principles, identify questions that can be tested, design an experiment or investigation, and identify appropriate tools. Collect and record multiple observations while conducting investigations or experiments to test a scientific question or hypothesis. 5.2 Interaction and Change: Force, energy, matter, and organisms interact within living and non- living systems. 5.3S.3 Explain the reasons why similar investigations may have different results. Grade Level Standards: 7th 7.2P.1 Identify and describe types of motion and forces and relate forces qualitatively to the laws of motion and gravitation. 7.3 Scientific Inquiry: Scientific inquiry is the investigation of the natural world based on observations and science principles that includes proposing questions or hypotheses, designing procedures for questioning, collecting, analyzing, and interpreting multiple forms of accurate and relevant data to produce justifiable evidence-based explanations. Part 2: “Engage” I will begin this activity by waving my hands around and asking students if they think air is real? I will ask if they can feel the air and how do they know it is there? I will ask if they can see the air? I will blow up a balloon and then let the air out and show students how sometimes we “see” air and definitely feel it. Before we can start exploring about air you will need to set up an exploration page in your science notebooks. Use the title “Balloon Rockets” and then list the materials we will use. You will need your science notebook, a pencil, baking soda, vinegar, lemon juice, water, measuring cup, measuring spoons, small bottle with a narrow opening (an old soap bottle would work), funnel , balloons of various sizes, and 2 clear glasses “Explore” As we begin any exploration, we will need to come up with up with a focus question. We need to think about what will happen to the air of the balloon if we put it over a container with the following ingredients in it; lemon juice, vinegar, and baking soda. We also need to think about what will happen to baking soda if we mix it with different liquids? Pause this video and write a focus question in your science journal. Here is the focus question that I came up with. Since we are both doing the same exploration let’s all use this focus question. Please add this question in your science notebook underneath your focus question and make sure you do not erase your original focus question. We will talk about other possible focus questions that we could have used when we return to class. Here is our focus question: How can acids and liquids cause reactions when mixed together? Now before we start to predict and develop a plan we must think about the scientific concepts in this lesson. When dealing with baking soda and vinegar do you remember which is a base and which is an acid? If you said that vinegar is an acid and baking soda is a base then you are on the right track. With this in mind we are going to make a prediction. In your science notebook write a table with three columns. In the first column you will give write the materials used so “water + baking soda” and vinegar + “baking soda” in the second column you write the prediction and on the right side (the third column) you will write what actually happened and why you think it happened. Now predict what you think will happen when we add 1 teaspoon of baking soda into water? Make another prediction of what you think will happen when we add 1 teaspoon of baking soda into vinegar. Please pause the video and experiment with what happens when you add 1 teaspoon of baking soda to a cup of water. Experiment again and see what happens when you add 1 teaspoon of baking soda to a cup of vinegar. Make sure to record your results. Pause the video while you work. Great job! Hopefully you saw that when baking soda was added to water nothing happened but when baking soda was added to vinegar it reacted. Do you know why this happened? It’s because vinegar is an acid and baking soda is a base! When we mixed the acid (vinegar) and the base (baking soda) we saw a chemical reaction occur which, let off a gas caused CO2 (carbon dioxide). Please write and answer the following questions in your science journal. Did you see the carbon dioxide gas when you mixed the vinegar and baking soda together? Do you know the carbon dioxide gas was present when you mixed the vinegar and baking soda? Pause the video while you write and record these questions. Before we begin our investigation you need to create some kind of a graph to record your data. I added more columns in my chart from above and then in the far left hand column I wrote “balloon, baking soda + vinegar”, “balloon, baking soda + lemon juice”, and “Balloon, baking soda + orange juice.” Now it is time to experiment with balloons. Get three balloons out and put 1 tablespoon of baking soda in each balloon. You will now get out your soap bottle and fill it with a half of a cup of orange juice, lemon juice, or vinegar to see what happens when you pull the balloon over the top of the container. It does not matter what order you experiment because you will try all three. When you have finished experimenting with one liquid you will write down what happened and why (column three in your table) and then you will dump out the liquid and put in a half of a cup of a different liquid. Make sure the tip of the balloon is fully over the top of the soap bottle so that no air can leak out. Before you being experimenting, make your predictions in your table. “Explain” After you tested what happens to the ballons when they are filled with baking soda and fastened over a container filled with different liquids think about who this all means scientifically. Write your claim, evidence, and conclusion statement in your science notebook. You can start with this “I claim that_______________because_________________. I think that this happened because________________. “Evaluate” Look back and your original predictions and then look at what actually happened. Write down what surprised you. Write down anything that you could have done differently to change what happened to the balloon. What questions do you have about motion, acids, bases and air/gases? Pause the video while you work. “Extend” One last step: Is there anything else you want to do in this experiment to test a theory or method? I have a couple of ideas about experimenting with different variables and how they could change our result. Write down all of your ideas and we can discuss them in class!
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