1290 questions and answers in this section
Explain why it was previously possible to calculate the diameter of the Earth without going into space?

Explain why it was previously possible to calculate the diameter of the Earth without going into space?

Around 240 BC, a Greek scholar named Eratosthenes managed to measure the circumference of the Earth using just a stick planted in the ground, a...

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Explain why glaciers move so slowly despite their immense weight.

Explain why glaciers move so slowly despite their immense weight.

Ice, despite its very solid appearance, has a particular crystalline structure that facilitates its movement. In reality, it is made up of many crystals, grains...

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Explain why do giant waves form off certain coasts?

Explain why do giant waves form off certain coasts?

The presence of certain underwater geological formations is a determining factor in the occurrence of giant waves. Typically, these are canyons, trenches, or sudden rises...

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Explain why do fulgurites form in the sand during storms?

Explain why do fulgurites form in the sand during storms?

When a lightning bolt strikes the sandy ground, the ultra-brief electrical discharge releases an enormous temperature, reaching over 30,000 °C. In an instant, this extreme...

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Explain why do wooden musical instruments resonate better than plastic ones?

Explain why do wooden musical instruments resonate better than plastic ones?

Wood has a very complex natural structure made of irregular fibers and tiny cells, which allows sound vibrations to circulate and diffuse better within the...

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Explain why are the oceans more acidic today than they were 100 years ago?

Explain why are the oceans more acidic today than they were 100 years ago?

Since the industrial revolution, a huge amount of carbon dioxide (CO₂) has been released into the atmosphere. This mainly comes from the burning of oil, coal, or...

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Explain why do the northern lights constantly change shape?

Explain why do the northern lights constantly change shape?

The solar wind is a fast and constant flow of charged particles sent by the Sun. It travels to Earth at speeds that can exceed...

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Explain why do some stars die by forming black holes?

Explain why do some stars die by forming black holes?

A star is a big balancing act between two opposing forces: gravity, which tries to compress everything, and the pressure generated by nuclear reactions at...

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Explain why we know the age of the Earth?

Explain why we know the age of the Earth?

To determine the age of our planet, scientists primarily use two main types of methods: relative methods and absolute methods. Relative methods allow us to...

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Explain why does coffee have such a distinct smell when freshly ground?

Explain why does coffee have such a distinct smell when freshly ground?

The magic of coffee lies largely in its aromatic compounds, those small molecules that give freshly ground coffee its irresistible aroma. When you break the...

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