💎 Rocks, Minerals & Earth's Structure
Real answers about Earth's geology: how diamonds and fossils form, the three rock types and how each is made, tectonic plates and earthquakes, the layers of Earth, caves and stalactites, Pangaea, geodes, and the difference between magma and lava.
33 topics 2–4 min avg read
🔬 Explore More Science Topics
Forces, Motion & Energy
The physics of motion, momentum, and the fundamental forces. Plate tectonics is the largest force-driven process happening on Earth.
Chemistry Elements
The building blocks of all matter from hydrogen to uranium. Every mineral is an element or combination, defined by its chemistry.
Chemistry Reactions
Acids, bases, oxidation, and what's happening when stuff changes. Chemical weathering is reactions slowly dissolving and transforming rocks.
Electricity, Magnetism & Waves
Currents, circuits, magnets, and how electricity flows. Magnetite and other minerals give Earth its magnetic field.
Volcanoes & Earthquakes
Eruptions, lava, plate tectonics, and Earth's violent geology. Igneous rocks come from volcanism; both are driven by tectonics.
Weather & Atmosphere
Clouds, wind, fronts, and what makes the sky do what it does. Weather slowly weathers rocks; rocks preserve evidence of past climates.
Severe Weather & Storms
Tornadoes, hurricanes, lightning, and extreme weather. Severe storms dramatically accelerate erosion and reshape coastlines.
Oceans & Water Cycle
Tides, waves, currents, and the planet's biggest water reservoir. Ocean floor is mostly basalt; sedimentary rocks form on ocean floors.
How Things Work & Discoveries
Inventors, inventions, and how everyday devices function. Materials in modern devices come from minerals extracted from rocks.
🛠️ Free Tools & Calculators
Black Hole Weight Calculator
See what gravity does to your weight near a black hole, including the tidal forces that would stretch you into spaghetti.
Weight on Other Planets Calculator
See how much you'd weigh on every planet, the Moon, Pluto, and the Sun's crushing gravity. No signup, just answers.
Your Age on Other Planets Calculator
How old you'd be on Mercury, Mars, Jupiter, and beyond. Some surprising results waiting on Neptune.