Sbi data logger
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1. The document describes an experiment using a data logger to study transpiration in plants. Students recorded humidity levels with a sensor inside a plastic bag wrapped around a plant branch under two conditions: with light and without light in a cupboard. 2. Results showed that humidity levels inside the bag rose more quickly when the plant was in the light, indicating greater water loss from transpiration. 3. A data logger allows automatic, accurate measurements over time without human error. Graphs and tables of results can then be analyzed to understand phenomena like transpiration.
Sbi data logger
- 1. DEPARTMENT OF BIOLOGY FACULTY OF SCIENCE & MATHEMATICS UNIVERSITI PENDIDIKAN SULTAN IDRIS INFORMATION AND COMMUNICATION TECHNOLOGY IN BIOLOGY SBI 3013 ASSIGNMENT 2 STUDENTS NAME AND MATRIC NUMBERS NAJAT BINTIMD MUHTAR (D20152071966) NOOR NADIABINTI ALIAS (D20152071973) NOR ERLINA BINTI MOHD SAHI (D20152071991) GROUP A LECTURES NAME ENCIKAZMI BIN IBRAHIM DATE 14 MAC 2016(TUESDAY) TITLE DATA LOGGER
- 2. Introduction Data logger is an instrument that capable of picking up and storing signals from sensors. For ease of use, they generally have a minimum number of displays and controls. Their portability enables remote data logging, for example remote data away from the computer. Data loggers are either fitted with an internal battery that is rechargeable or use regular alkaline batteries. Some may have external power supplies. Most data loggers store data in non-volatile memory, which means the data is not going to lose if the power supply fails. Data logging is the measurement and recording of physical or electrical parameters over a period of time. Data logging also can be defined as using an electronic instrument to take measurement from sensors and storing them for future use. Common measurements are temperature, pressure, transpiration, current, and velocity. Scientific Concept Transpiration is a process loss of water in the form of water vapor from part of plant especially leaves but also in stems, flower and roots. Leaves transpiration occur through stomata. Transpiration cools plants and enable mass flow of mineral nutrients and water from roots to shoots. Problem Statement To study which condition either present or absent of light will cause the plant loses water most?
- 3. Objective To determine which condition cause the plant lose water most. To understand the transpiration phenomenon. To examine the phenomenon by using data logger. Data Logger Engage During a hot and sunny day, it seems that, sitting under a tree is much cooler compared to the surrounding that is exposed to sunlight. Why this phenomenon occur? Explain.
- 4. Empower (Planning Experiment) Diagram 1 Procedure: 1) Done the experiment in the laboratory (presence of light) 2) Set up the apparatus as diagram above. 3) Place the humidity sensor inside the plastic bag and wrapped around a branch of plant. 4) Set the data logger. 5) Set the data logger and record the result for a few hours. 6) Repeat the experiment by place the plant at different place that are inside the cupboard (absence of light).
- 5. Result: A) Rate of humidity outside the cupboard. Table 1 : Rate of humidity outside of the cupboard
- 6. B) Rate of humidity inside the cupboard. Graph 1 : Rate of humidity outside of the cupboard
- 7. Table 1 : Rate of humidity inside of the cupboard Graph 1 : Rate of humidity inside of the cupboard
- 8. PBL (Discussion) Question: 1. What cause the plastic bag to turn cloudy at the end of the experiment? 2. What triggers the water to be expelled from the plant? 3. Where does the water which has been expelled come from? 4. Which structure in the leaf helps to draw water out? 5. Which structure helps to control the opening and closing of stomata? Answer: 1) There were water droplets in the bag. The bag may appear cloudy because of water vapour in the bag. 2) The inner side of the plant is in hot condition. Thus to make it cooler the plant has to expel the water out from its body. 3) The water comes from the soil. The uptake of water from the soil is via osmosis, then the water enters neighbouring cell until it reached the pore. Enhance: Why it is not advisable to water the plant during mid-day? Explain the phenomenon.
- 9. Unique Features Conclusion In conclusion, data logger is an electronic device that records data over time or in relation to location either with a built in instrument or sensor or via external instruments and sensors. It really gives a lot of advantages. For example measurements are always taken at the right time in using data logger. Unlike a human the computer will not forget to take a reading or take a reading too late or too early. Besides that, mistakes are also not made in reading the results when using data logger. We can see that humans can make errors, so we need data logger device to solve problems. For example it is quite easy to misread the temperature using the scale on a thermometer. Thats why data logger is important in reading a scale. Data logging devices also can be sent to the places that humans not easily get to for example to the planet Mars, into the bottom of a volcano, or onto a roof of a tall building to get to weather station. Graphs and tables of results can be produced automatically by the data logging software. Data logger device really make our life beong more easy to handle. Unique Features Experiment can be repeated or stopped at any time as most of the work is taken over by the data logger The pattern of temperatureand humidity changes can be observed on the samegraph More than one sensor can be used simultaneously (humidity and temperatures sensor) Itcan saveour time since the experiments do not take a long period.
- 10. REFERENCE 1. Frost, R. (2003a). The IT in Secondary Science Book. Cambridge : IT in Science Publishing. 2. Frost, R. (2003b). Data logging in Practice. Cambridge: IT in Science Publishing.