Throughout the daylight hours, the sun heats up the air and the soil. Project 1, Air Temperature Measurements, investigates the change in air temperature during this process as well as the change in temperature during the nighttime hours. In this experiment you will perform a similar investigation, however you will investigate the change in soil temperatures at different depths in the ground.


  • Use temperature probes to collect and analyze ground temperature measurements for 23 hours.
  • Collect temperature measurements at different depths in the ground, 1 cm below the surface and 10 cm below the surface.