International Earth Science Olympiad (IESO)
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Description:
International Earth Science Olympiad is an annual competition with participants from over 35 nations, each composed of 4 students and 2 faculty advisors. Unlike traditional physics or chemistry olympiads, the IESO focuses on understanding our planet as an interconnected system of the geosphere, hydrosphere, atmosphere, and biosphere, and even extends to planetary systems.
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Students take a series of exams which include both theory-based questions (Theoretical Exam) and practical tasks (Practical Exam). The exam duration is 90 minutes, and the total score is equally split between the 2 types of exams.
Then, participants can experience hands-on field activities, which is a key part of this experience. It provides an opportunity for participants to exercise their knowledge and apply them to the real world.
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Participants are tested on how different parts of the Earth interact with each other. The main subject areas are:
Geology and Geophysics: Includes topics like the rock cycle, plate tectonics, mineral and rock identification, earthquakes, and volcanoes.
Meteorology and Atmospheric Science: Covers the structure and composition of the atmosphere, weather and climate, energy balance, and climate change.
Oceanography and the Hydrosphere: Focuses on the water cycle, oceans, freshwater systems, and environmental issues related to water.
Terrestrial Astronomy and Planetary Systems: Explores Earth's place in the solar system, energy flow from the sun, and comparisons with other planets.
Competition Details:
Key Dates:
The IESO Final Event: The final event in 2026 will take place in Turin, Italy, from August 20 to 27, 2026.
National selection time varies.