High School / ChemistryEarth ScienceEnvironmental Science

The Water Cycle

Students use a turbidity sensor, a conductivity sensor, and a condenser to explore how energy drives the movement and purification of water through Earth’s systems.

Supports NGSS Performance Expectation HS-ESS2-2: Analyze geoscience data to make the claim that one change to Earth’s surface can create feedbacks that cause changes to other Earth’s systems.


Student Files

23B_answer_sheet.docx 123.59 KB
23B_The_Water_Cycle.docx 574.69 KB
23B_The_Water_Cycle.pdf 550.95 KB
23B_answer_sheet.pdf 134.56 KB
23B_The_Water_Cycle_Google_Slide.pdf 31.71 KB

Teacher Files

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Featured Equipment

Cuvettes and Caps

Replacement Cuvettes and Caps for the PASCO Wireless Spectrometer.


Designed to cool the vapors from a liquid sample that is being heated (distilled), and capture the condensation.

Colorimeter and Turbidity

Wireless Colorimeter & Turbidity Sensor

This sensor can function as a turbidimeter or colorimeter and is capable of measuring absorbance and transmittance at six different wavelengths.

Wireless Conductivity Sensor

Wireless Conductivity Sensor

This waterproof sensor connects via Bluetooth® to measure both conductivity (ionic content in solution) and total dissolved solids.

100 NTU Calibration Standard

Replacement calibration standard for PASPORT Turbidity Sensor (PS-2122).

Many lab activities can be conducted with our Wireless, PASPORT, or even ScienceWorkshop sensors and equipment. For assistance with substituting compatible instruments, contact PASCO Technical Support. We're here to help.

Copyright Disclaimer: Section 107 of the Copyright Act of 1976 makes allowance for “fair use” for purposes of teaching, scholarship, education and research. Reproduction under any other circumstances, without the written consent of PASCO, is prohibited.
Source: Lab #23B

Essential Chemistry Teacher Lab Manual

The Water Cycle