Geology
Geology understands how landforms were created, have changed over time, and how they will evolve. Learn more about the geologic history of Earth and more.
Erosion, Weathering, and Soils
4 Types of Soils
Soil is everywhere, under our feet, in gardens, and in the wild. But not all soils are the same. From silt to loam, learn the types of soils.
Inside Earth
Inside Earth: The Crust, Mantle and Core
All planets have layers. Inside Earth, we have a crust, core and mantle. Imagine a team of drillers who set out to drill a hole to the other side of Earth.
Land Surface
5 Sources of Alternative Energy
The world is rapidly transitioning towards a clean energy future. We can switch to alternative sources of energy to fuel our cars and homes.
Milestone Events
5 Steps of Fossilization
Fossilization is a process that turns once-living organisms into stone-like fossils. Today, we’ll look into the steps of fossilization.
Rocks and Minerals
How Was the Grand Canyon Formed?
Like a stack of pancakes, younger rock layers pile on top of older layers. We use the law of superposition to reveal Earth’s age and Grand Canyon geology.
Plate Tectonics
7 Major Tectonic Plates: The World’s Largest Plate Tectonics
From large to small, the 7 major tectonic plates include the Pacific, North American, Eurasian, African, Antarctic, Indo-Australian and South American plate.
Geologic Timeline
Snowball Earth – Our Planet’s Icy History
Earth went through a dramatic freeze, known as “Snowball Earth”. Picture Earth, not as a blue and green globe, but as a white, icy snowball.
Volcanoes
Volcanic Bombs: What Is a Lava Bomb?
Lava bombs (volcanic bombs) are chunks of molten rock shot from a volcano. When a volcano erupts, it launches these rocks into the air.