The Moving Earth
Like Duolingo, but for The Moving Earth. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in The Moving Earth
- Temperature increases with depth toward the core
- The Crust is the outermost and coolest layer
- The lithosphere is the rigid outer shell
- The Inner Core is the deepest and hottest layer
- The asthenosphere is semi-fluid and allows movement
- The outer core is the only fully liquid layer
- The Earth's Layered Shell
- Heat creates convection currents in the mantle
- Rising hot material and sinking cool material create a cycle that drags the crust
- The physical state and behavior of each layer
- The lithosphere is divided into distinct sections
- These sections are called tectonic plates
- Plates move in different directions relative to one another
- Specific terms describe the direction of plate interaction
- Plates fit together like a spherical jigsaw puzzle with no large gaps
- Plate boundaries are where most geological activity occurs
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Moving Earth the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If you could dig a giant hole toward the middle of the Earth, what would happen to the air inside?
Get it right to open this lesson and 25 more in the app.
Where The Moving Earth takes you
Discover why our planet is constantly shifting and shaking. Learn how deep heat and moving plates create giant mountains and powerful tremors.
- 1
The Ground Beneath Your Feet
- The Earth's Layered Shell
- Giant Puzzle Pieces
- Why the Ground Shakes
- Measuring a Big Quake
- 2
Mountains of Fire
- How a Volcano is Born
- The Difference Between Magma and Lava
- Explosive vs. Leaky Volcanoes
- The Ring of Fire
- Life After an Eruption
- Predicting the Next Blast
- 3
Staying Safe on a Shaky Planet
- Buildings That Can Dance
- What to Do During a Shake
- How Tsunami Waves Form
3 sections · 13 units · 26 levels. Built to play, not to enroll.
You pick the voice
The Moving Earth is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Science on Tomo
Dragon Anatomy: Beyond the Basics
Move past simple myths to understand how a dragon's body actually functions. Explore the mechanics of flight, the chemistry of fire-breathing, and the specialized armor that protects these legendary beasts.
The Sky-Shield Experiment
Explore the controversial science of spraying particles into the sky to cool the planet. Learn which materials are being tested, how they reflect sunlight, and what happens when they eventually fall back to Earth.
Quantum Physics in Your Pocket
Move beyond the mystery and see how quantum mechanics powers your everyday life. Discover how particles behaving like waves make your smartphone, medical scans, and future computers possible.
Build Things That Don't Break
Ever wonder why skyscrapers don't topple or how bridges carry thousands of cars? Learn to think like an engineer by mastering the hidden forces that hold our world together.
The Weird World of Quantum Physics
Ever wonder how things can be in two places at once? Discover the strange rules that run our universe and how they power the gadgets you use every day.
CERN and the Mystery of the Mandela Effect
Explore the mind-bending theories connecting the world's largest particle collider to shifts in our collective memory. Discover how scientists hunt for hidden dimensions and why some believe our reality has already branched off.
Start The Moving Earth today.
Download Tomo, search The Moving Earth, and play your first lesson in under a minute.