Search Results | volcanic rock

Your search for "volcanic rock" returned 142 results

How is volcanic ash made?

science.howstuffworks.com/nature/natural-disasters/volcanic-ash.htm

Volcanic ash is what's left after a volcano literally blows its top. Learn how volcanic ash can devastate everything under its gray blanket.

3 Types of Rocks Every Aspiring Geologist Should Know

science.howstuffworks.com/environmental/earth/geology/types-of-rocks.htm

Rocks might look simple, but they tell an ancient story of Earth’s fiery depths, surface shifts and biological processes.

What Are Geodes and Where Can You Find Them?

science.howstuffworks.com/environmental/earth/geology/geodes.htm

Imagine walking through a dusty, arid landscape when you stumble upon a seemingly ordinary rock. Its rough exterior might not catch the eye, but what lies within surely will. Geodes are one of nature's most spectacular treasures, offering a glimpse into the geological processes that shape our Earth.

We Finally Know Why Ancient Roman Concrete Outlasts Our Own

science.howstuffworks.com/why-ancient-roman-concrete-stronger-than-modern.htm

The ancients were able to devise a mix for concrete that actually gets stronger over time thanks to chemical reactions. If only we could rediscover the recipe...

Was an Evil Spirit Released When Japan's 'Killing Stone' Split in Half?

history.howstuffworks.com/history-vs-myth/japans-mythic-killing-stone.htm

When the "killing stone," or "Sesshō seki," split March 5, 2022, on the plains of Mount Nasu in Japan, was the devious spirit Tamamo-no-Mae released into the world to wreak havoc?

The Marine Iguana Is The World's Only Seafaring Lizard

animals.howstuffworks.com/reptiles/marine-iguana.htm

The marine iguana is found only in the Galápagos Islands. From their sleek swimming skills underwater to their clumsy movements on land, they're perfectly adapted to their marine environment.

Cinnabar: Red, Beautiful — and Toxic

science.howstuffworks.com/environmental/earth/geology/cinnabar.htm

Cinnabar's bright-red pigment has been used in jewelry, pottery and makeup for millennia. But cinnabar is also the primary ore for mercury, making it a dangerous mineral if the particles are inhaled.

The Ultimate Ocean and Marine Life Quiz

play.howstuffworks.com/quiz/ocean-marine-life-quiz

Oceans cover most of the Earth's surface. They include a vast diversity of life, everything from plants to large mammals. Oceans represent a truly undiscovered world for most people. Take this quiz and learn more about ocean life.

Humuhumunukunukuapua'a: A Long Name for a Little Fish

animals.howstuffworks.com/fish/triggerfish.htm

Humuhumunukunukuapua'a, the colorful little fish with the craaaaazy long name, is Hawaii's state fish, but it wasn't always.

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