Scientists Say: Supercontinent

Scientists Say: Supercontinent

Supercontinent (noun, “SOOP-er-con-ten-ent”) A supercontinent is a continent containing most or all of Earth’s land. When a continent contains at least 75 percent of the Earth’s land, researchers call it a supercontinent. None of the landmasses on Earth today qualify as supercontinents. But Earth’s continents haven’t always looked this way. Throughout our planet’s history, continents…

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Explainer: What is the solar cycle?

Explainer: What is the solar cycle?

The sun is the closest star to Earth. That gives all Earthlings, especially astronomers, a front-row seat to its activities. One of the most striking features of the sun’s activity is what astronomers call the solar cycle. This is an epic rise and fall in the sun’s level of activity that repeats every 11 years…

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Scientists Say: Corona

Scientists Say: Corona

Corona (noun, “Koh-ROH-nuh”) The corona is the outermost part of the sun’s atmosphere. The sun’s visible surface is called its photosphere. Just above that lies a thin layer of the solar atmosphere called the chromosphere. And surrounding that is the corona — a wispy haze of charged gas, or plasma. The sun’s messy magnetic field…

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Experiment: Can plants stop soil erosion?

Experiment: Can plants stop soil erosion?

Objective: Find out if plants can reduce the amount of soil that is eroded from a hill due to rainfall Areas of science: Environmental engineering, geology, plant biology, environmental science Difficulty: Medium intermediate Time required: 2–4 weeks Prerequisites: None Material availability: Readily available Cost: $20–$50 Safety: No issues Credits: Ben Finio, PhD, Science Buddies (this…

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