Data logger experiment
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This document summarizes an experiment on photosynthesis using a data logger. The experiment measures the carbon dioxide concentration released from a plant both during the day with light and at night without light. With light, the plant consumes more carbon dioxide through photosynthesis than it releases through respiration, leading to a net decrease. Without light, only respiration occurs, leading to a net increase in carbon dioxide concentration. The data logger allows independent data collection over time without needing continuous connection to a computer. Repeating the experiment with the light source closer could affect the results due to changes in the photosynthesis rate.
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This document discusses data logging and the use of gas sensors to measure oxygen and carbon dioxide levels during photosynthesis experiments. It provides background on photosynthesis, cellular respiration, and how they relate to the consumption and production of oxygen and carbon dioxide. The document then outlines the specific procedures to set up gas sensors connected to a computer to measure these gas levels in plant leaves in both light and dark conditions. This allows calculating the rates of photosynthesis and respiration from the sensor readings. Precautions for using the sensors and interpreting the results are also described.
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The document discusses data logging and the processes of photosynthesis and cellular respiration. It provides the objectives, procedures, and results of an experiment using gas sensors to measure the amount of oxygen and carbon dioxide released and consumed by plant leaves during photosynthesis and respiration. The experiment found that leaves consumed oxygen and produced carbon dioxide in the dark, indicating respiration, while producing oxygen and consuming carbon dioxide when exposed to light, indicating photosynthesis.
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The document discusses data logging and the use of gas sensors to measure oxygen and carbon dioxide levels during photosynthesis experiments. It provides detailed procedures for setting up oxygen and carbon dioxide sensors and using a datalogger to collect readings over time from the sensors placed near plant leaves. The procedures describe taking readings from the sensors in both light and dark conditions, and using the datalogged data to calculate respiration and photosynthesis rates from the slopes of oxygen and carbon dioxide graphs.
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This document provides guidance for using algae beads to investigate photosynthesis and cellular respiration through an inquiry-based laboratory activity. It outlines the objectives of demonstrating CO2 movement during these processes and taking quantitative measurements. It describes the algae beads, which contain live algae cells, and a CO2 indicator solution for collecting qualitative and quantitative data. A sample procedure is outlined where students expose algae beads to light and dark conditions and monitor color changes in the indicator over time. Extensions and additional connections for further investigations are also discussed.
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Any substance (other than food) that is used to prevent, diagnose, treat, or relieve symptoms of a
disease or abnormal condition
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Natural birth techniques - Mrs.Akanksha Trivedi Rama University
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Your Skill Boost Masterclass: Strategies for Effective Upskilling
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Data logger experiment
- 2. Experiment: Shed A Little Light on Me Photosynthesis: Changes in CO2 levels 2
- 3. Engage: 3 Does carbon dioxide release from the plant during the day? Does carbon dioxide release from the plant during the night? What is the different of carbon dioxide concentration released in both situation?
- 4. Empower: Planning Your Experiment Modules and Sensors PC + NeuLog application USB-200 module NUL-220 CO2 logger sensor Equipment and Accessories Glass bottle Table lamp Aluminium foil Leaves 4
- 5. Empower: Doing The Experiment Part 1: Without light 5
- 6. Empower: Doing The Experiment Part 2: With light 6
- 9. Empower: Discussion Questions: 1. Determine the rate of respiration. 2. Determine the rate of the net photosynthesis. 3. Calculate the gross photosynthesis rate. 9
- 11. Rate of respiration = 0.59 ppm/min 11
- 12. Net photosynthesis rate = -0.2 ppm/min 12
- 13. Enhance: Explain the importance of plants to humans and the environment. 13
- 14. Extension: Repeat the experiment but now put the lamp closer to the bottle. Before the beginning of the measurement, write at least two hypotheses about the possible effects of changing the distance of the lamp from the leaves on the results. What do you think will actually happen? 14
- 15. Unique feature of this activities: Allow student to do the experiment individually. Time to do the experiment is reduce, enable to finished the experiment during practical class. Enable students to measure the level CO2. 15
- 16. Unique feature of this activities: The pattern of CO2 changes can be observe along with the experiment: When leaves are exposed to light, CO2 production changes to CO2 consumption because of the process of photosynthesis respiration still occurs remove the alternative concept of students. Experiment can be repeated or stopped at any time as most of the work is taken over by the data logger. 16
- 17. Unique feature of this activities: Independent datalogging PASCO: Long term data collection directly on the sensor In logging mode, wireless sensors collect data to their onboard memory for hours, days, weeks or even months at a time without needing to be connected to a computer, tablet, Chromebook or smartphone When the experiment is concluded, simply connect the sensor to a device running PASCO software and download all the measurements it recorded 17
- 18. Thank you! 18