Dynamite is a powerful explosive made by mixing nitroglycerin with an absorbent material like sawdust or clay. It was invented in 1867 by Swedish chemist Alfred Nobel and is used for construction, mining, and demolition.

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The Richter Scale is the most common magnitude scale used to measure earthquake strength, rating earthquakes from 1 to 10 based on the energy they release. Scientists also use other scales like the Moment Magnitude Scale for more precise measurements of larger earthquakes.

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Radiocarbon dating of a wooden tablet reveals the Rongorongo writing system may predate European contact by over 200 years, suggesting independent invention.

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Rain occurs when water vapor in the air condenses into water droplets that become too heavy to float, causing them to fall to the ground. This happens when warm air containing moisture rises, cools down, and the water vapor turns back into liquid water.

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A solar flare is a sudden, intense burst of radiation and energy released from the Sun's surface. Scientists classify solar flares into five categories (A, B, C, M, X) based on their X-ray intensity, with X-class being the most powerful.

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