In this activity, you will use an inexpensive spectrophotometer* to test how light at different visible wavelengths (blue, green, red) is transmitted, or absorbed, through four different colored water samples.

Students analyze two North Pole orthographic data visualizations produced from soil moisture data. After describing trends in the seasonal thaw of land surfaces, students demonstrate their understanding of Earth’s energy budget by explaining relationships and make predictions about the dataset.

GLOBE protocols and learning activities that complement the Soil Moisture phenomenon through hands-on investigations are detailed. 

Explore and connect to the GLOBE Soils protocol bundle. 

Explore and connect to the GLOBE Oceans protocol bundle. 

Explore and connect to the GLOBE Mosquito protocol bundle. 

Explore and connect to the GLOBE Rivers and Lakes protocol bundle. 

Explore and connect to the GLOBE Water Cycle protocol bundle. 

Explore and connect to the GLOBE Water Quality protocol bundle. 

Explore and connect to the GLOBE Weather protocol bundle.