Featured in PASCO’s College Environmental Science Instructor Guide

College Environmental Science Instructor Guide

(PS-3809A)

College Instructor edition with experiments covering introductory and general environmental science topics.

Model an Ecosystem

Lab Summary

Use a variety of sensors to explore the use of terrariums as a closed system for environmental studies, designing ways to explore the interrelationships of biotic and abiotic structures in ecosystems.

Theory

To use terrariums as a closed system to design and sustain a stable ecosystem, students:

  • Configure multiple, interconnected terrariums in which they design and conduct investigations of the interrelationships of biotic and abiotic structures in ecosystems.
  • Learn to use this closed system to change one variable at a time, control other variables, and monitor multiple variables simultaneously.

Downloads

  • Sample Lab - Modeling an Ecosystem (769 KB – PDF)
  • Method

    Students design, execute, and analyze controlled investigations using sensor technology to monitor independent and dependent experimental variables.

    Sensors / Equipment Used:

    PASPORT Oxygen Gas Sensor

    (PS-2126A)

    The Oxygen Gas Sensor accurately measures O2 concentration in the atmosphere or in enclosed spaces. Study animal, plant or cellular respiration, air quality, O2 production from chemical reactions and more.

    PASPORT Carbon Dioxide Gas Sensor

    (PS-2110)

    The PASPORT Carbon Dioxide Gas Sensor measures carbon dioxide concentration CO2 (parts per million) in gases such as air. Ideal for studies of photosynthesis, respiration, fermentation and more.

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    PASPORT 6-in-1 Weather Sensor

    (PS-2154A)

    Measures barometric pressure, relative altitude, absolute and relative humidity, dew point, and temperature. For use with PASPORT Interfaces.

    PASPORT Colorimeter Sensor

    (PS-2121)

    Our PASPORT Colorimeter records all 4 wavelengths simultaneously--no need to guess at wavelength to get a quality measurement.

    EcoZone™ System

    (ME-6668)

    System contains 3 interconnectable acrylic chambers for building your own ecosystems. Designed to easily integrate sensors for quantitative environmental measurements

    Materials Used:

    Compost or soil (quantity
    determined by student design of
    the activity)
    1
    Different types of living organisms - Several
    Plant seeds or seedlings, or moss - Several
    Pollution sources (depends on students’ design):
    Detergent (10 mL liquid soap)
    Fertilizer (10 g)
    HCl or white vinegar (16.6 mL
    Strong incandescent or fullspectrum fluorescent light source
    USB hub (depending on data collection system)
    Water, dechlorinated (quantity determined by student design of the activity)

    The Associated Bundle:

    College Environmental Science Sensor Bundle

    (PS-2930A)

    Contains the probeware needed to perform all 26 experiments in the College Environmental Science instructor guide.

    Interface Required

    This experiment may require software and an interface for data collection.