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Students will use a PASPORT relative pressure sensor as a potometer to measure the rate of water uptake in plants due to transpiration--or the concept of &"transpiration pull.&" The investigation will also explore the function of transpiration in plants and how vital the process is for life on Earth. This activity can be completed in one 50-minute lab session. Includes materials for 30 students and instructions. Grade 9–12. Requires 1 sensor, plus 1 USB Link or 1 Xplorer Datalogger, for each group of students. When you want to use more than one USB Link or Xplorer (or any combination), the USB 4-Port Hub expands your single USB to four USB ports.



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