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Use the lab report below to Complete the Unit 7 portfolio. This lab report is based on the lab investigations given in Connexus...Question
Use the lab report below to Complete the Unit 7 portfolio. This lab report is based on the lab investigations given in Connexus and will be using the provided videos. Some parts of this lab report have already been filled in for you. Be sure to write 1-2 complete sentences when answering questions. One word answers will not provide full credit.
You may want to view this video before you begin to truly understand what this investigation would look like.
Name
Date
Assignment Title: Unit 7 Portfolio: Matter and Energy
Before beginning you MUST watch the video in Lesson 3, page 10. Then, you can complete the first part of this lab report by answering the questions, writing a hypothesis, determining your variables, describing your materials, and listing your procedures. Remember, you don’t actually have to DO this experiment, but you do have to plan as if you are.
Steps of the Scientific Method
1. State the Problem How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis?
How will we measure the amount of carbon dioxide that Elodea has absorbed?
How will we measure the amount of oxygen Elodea has released?
2. Hypothesis Independent Variable
____________________
IF_______________________________________________,
THEN____________________________________________
________________________________________________.
Dependent Variable
____________________
3. Experiment
Control Materials
Procedures (list steps)
1. 6.
2. 7.
3. 8.
4. 9.
5. 10.
Watch the video in Lesson 3, page 10 before moving forward.
4. Describe the data you expect to collect in this investigation by answering the questions. You can also insert a sample data table if you wish.
A. How will you determine whether photosynthesis has occurred? What color does BTB make the water to begin with? What color do you expect the water to be IF photosynthesis has occurred?
Answer the following questions.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow. What does that mean? Do you think there would be oxygen bubbles present?
Examine the example table to the right and answer the question that follows.
Content of Test Tube Color When Left in Light Color when left in Dark
11 Baking Soda + BTB Yellow Yellow
2 Baking Soda, BTB, and Elodea Green Greenish Yellow
3 Baking Soda, BTB, and Elodea Green Yellow
Which trial performed photosynthesis when left in the light? Which trial performed photosynthesis when left in the dark?
Examine the table to the right and answer the following questions.
Time Elapsed (minutes) Test Tube 1 – Number of bubbles Test Tube 2 – Number of Bubbles
0 0 0
1 20 23
2 31 31
3 32 35
4 31 32
5 32 33
Make a graph of the number of oxygen bubbles that are released per minute for 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles on the vertical access. If you cannot make the graph directly in this document, you will need to create your graph on paper and then upload a picture. If you cannot get it into this box, add it to the end of this lab report or attach a separate submission to the drop box.
Summarize your lab report by answering the following questions.
5. Conclusion: written explanation of what you learned. This should be one paragraph explaining what you learned about photosynthesis (5-6 sentences, 250 words). Be sure to include ALL required vocab words from the list above and underline them.
Information to include:
• Did your data support or refute your hypothesis?
• What would you do to improve the experiment in the future?
• What did you learn about this topic?
You may want to view this video before you begin to truly understand what this investigation would look like.
Name
Date
Assignment Title: Unit 7 Portfolio: Matter and Energy
Before beginning you MUST watch the video in Lesson 3, page 10. Then, you can complete the first part of this lab report by answering the questions, writing a hypothesis, determining your variables, describing your materials, and listing your procedures. Remember, you don’t actually have to DO this experiment, but you do have to plan as if you are.
Steps of the Scientific Method
1. State the Problem How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis?
How will we measure the amount of carbon dioxide that Elodea has absorbed?
How will we measure the amount of oxygen Elodea has released?
2. Hypothesis Independent Variable
____________________
IF_______________________________________________,
THEN____________________________________________
________________________________________________.
Dependent Variable
____________________
3. Experiment
Control Materials
Procedures (list steps)
1. 6.
2. 7.
3. 8.
4. 9.
5. 10.
Watch the video in Lesson 3, page 10 before moving forward.
4. Describe the data you expect to collect in this investigation by answering the questions. You can also insert a sample data table if you wish.
A. How will you determine whether photosynthesis has occurred? What color does BTB make the water to begin with? What color do you expect the water to be IF photosynthesis has occurred?
Answer the following questions.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow. What does that mean? Do you think there would be oxygen bubbles present?
Examine the example table to the right and answer the question that follows.
Content of Test Tube Color When Left in Light Color when left in Dark
11 Baking Soda + BTB Yellow Yellow
2 Baking Soda, BTB, and Elodea Green Greenish Yellow
3 Baking Soda, BTB, and Elodea Green Yellow
Which trial performed photosynthesis when left in the light? Which trial performed photosynthesis when left in the dark?
Examine the table to the right and answer the following questions.
Time Elapsed (minutes) Test Tube 1 – Number of bubbles Test Tube 2 – Number of Bubbles
0 0 0
1 20 23
2 31 31
3 32 35
4 31 32
5 32 33
Make a graph of the number of oxygen bubbles that are released per minute for 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles on the vertical access. If you cannot make the graph directly in this document, you will need to create your graph on paper and then upload a picture. If you cannot get it into this box, add it to the end of this lab report or attach a separate submission to the drop box.
Summarize your lab report by answering the following questions.
5. Conclusion: written explanation of what you learned. This should be one paragraph explaining what you learned about photosynthesis (5-6 sentences, 250 words). Be sure to include ALL required vocab words from the list above and underline them.
Information to include:
• Did your data support or refute your hypothesis?
• What would you do to improve the experiment in the future?
• What did you learn about this topic?
Answers
Answer
whts the rest of the procedure's steps
Answer
wht the answer to this If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow. What does that mean? Do you think there would be oxygen bubbles present?
Answer
can u Make a graph of the number of oxygen bubbles that are released per minute for 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles on the vertical access.
Answer
wht the hypothisesis
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