Earth Science at Western
Not directly. At Western University you apply to Science (ES), then choose earth science at the end of first year, during Intent to Register in March.
The program you actually apply to
Science
80–87%OUAC ESCo-op availableSupplementary application
Prerequisites
- English, ENG4U
- Calculus and Vectors MCV4U
- Two of:
- Advanced Functions, MHF4U
- Biology, SBI4U
- Math of Data Management, MDM4U
When you choose earth science
At the end of first year, during Intent to Register in March.
What to watch for
You apply to the Faculty of Science (ES); the Department of Earth Sciences then offers Geology, Geophysics, Environmental Geoscience, Environmental Science and Geology and Biology modules — note there is no module actually named 'Earth Sciences', and Planetary Science and Space Exploration exists only as a Minor. The Geology, Geophysics and Environmental Geoscience streams marked 'For Professional Registration' cover the requirements for licensure as a geoscientist. SES4U counts toward the ES admission requirement but is not required.
The same application also gets you to
Science is the entry point for 7 other majors at Western. You are not choosing between these at application time.
Earth Science at the other campuses
Compare the entry programs side by side →- Algomavia Geography (BA 4 year) (JBJ)65%
- BrockDirect entry73–77%
- Carletonvia Science - Honours (CT)78%
- Guelphvia Bachelor of Science in Environmental Sciences (BS Env) (GEA)75–80%
- LakeheadDirect entry70%
- LaurentianDirect entry70%
- Laurier (Waterloo)not offered at Laurier
- McMastervia Environmental and Earth Sciences Gateway83–87%
- Nipissingvia Bachelor of Science (PS)70%
- Ontario Technot offered at Ontario Tech
- Queen'svia Science – Earth and Environmental Science (QSE)80–87%
- TMUnot offered at TMU
- TrentDirect entry75%
- U of T (Mississauga)via Chemical & Physical Sciences73–80%
- U of T (Scarborough)via Physical & Environmental Sciences (OUAC TSP)73–80%
- U of T (St. George)via Mathematical & Physical Sciences83–90%
- Waterloovia Physical Sciences80–83%
- Windsorvia Environmental Science/Environmental Studies (NLS)70%
- YorkDirect entry73–77%
Entry routes were researched against each university’s own program pages in 2026-08-16. Western’s page. Faculties restructure — confirm before you apply.