Category:

What if everyone went for a dip in Lake Michigan?

February 11th, 2013 by

Today’s blog post features a fun bit of physics from Wired.com’s science blog.

Writer Rhett Allain, professor at Southeastern Louisiana University, received an interesting question over Twitter – “What would happen if everyone on the planet jumped in the water?”


He writes:

“Let’s give a slightly refined version of the question.

‘If everyone on Earth went for a swim at the same time in Lake Michigan, how high would the water level rise?’

I have two primary assumptions to start with. First, I will assume that during this time the volume of water in Lake Michigan will be constant. So if the people make the water level rise, the water level will indeed rise instead of pushing water into the other Great Lakes. Second, I will assume that all of the humans in the lake are floating. If they aren’t ‘swimming’ or touching the bottom, then it will be easier to calculate the rise in the water level.”

Follow the link above for a fun Lake Michigan physics lesson.

IISG Instagram

🌊 Save the Date! 🌊Shipboard Science Immersion 2026Join the Center for Great Lakes Literacy aboard the R/V Lake Guardian on Lake Superior, July 7–14, 2026!✅ Open to formal & nonformal educators (grades 5–12) across the Great Lakes region.📅 Applications open January 2026Learn more: https://cgll.org/signature-program/r-v-lake-guardian-shipboard-science-immersion/ or the link in bio.#TeachingTuesday
Join the Invasive Crayfish Collaborative for an exciting webinar featuring Dr. Chris Taylor from the Illinois Natural History Survey who will provide an overview of midwestern crayfish habitat requirements, feeding, reproductive biology, and life-history.Crayfishes in the Midwest occupy almost every type of aquatic and semi-aquatic habitat in the region. They function as critically important components of those ecosystems and in many cases represent a majority of invertebrate biomass. As “keystone” species, understanding their biology and roles in ecosystems is critically important. Register for the webinar at InvasiveCrayfish.org/events1 Or the link in bio.
This season, let’s teach eco-friendly habits while spreading cheer! NOAA’s Greener Holiday Gift Guide is full of ideas to reduce waste and protect our precious water resources. Check out the full guide at the link in bio. #teachingtuesdayNOAA Marine Debris NOAA Education