1312 questions and answers in this section
Explain why we feel dizzy when leaning over the edge of a balcony?

Explain why we feel dizzy when leaning over the edge of a balcony?

In your inner ear, you have an organ called the vestibular system. It tells you if you tilt your head, move, or lose your balance. It works...

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Explain why do some volcanoes deserve the term supervolcanoes?

Explain why do some volcanoes deserve the term "supervolcanoes"?

A supervolcano is simply a volcano of XXL dimensions with such significant explosive potential that it can disrupt the entire planet. To be classified as...

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Explain why are roses one of the most common symbols of love?

Explain why are roses one of the most common symbols of love?

Roses were already associated with love in ancient civilizations, where the Greeks saw them as the favorite flower of Aphrodite, the goddess of love. Later, the Romans...

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Explain why reptiles have scales while mammals have hair?

Explain why reptiles have scales while mammals have hair?

The scales of reptiles and the hair of mammals do not come from the same place on the evolutionary tree. The scales of reptiles appeared...

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Explain why does the Earth's rotation slowly slow down over time?

Explain why does the Earth's rotation slowly slow down over time?

The gravitational force between the Earth and the Moon causes tidal forces that slightly deform our planet. This deformation creates ocean "bulges" pointed toward the...

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Explain why some fruits have edible skin while others do not?

Explain why some fruits have edible skin while others do not?

The skin protects the fruit against all kinds of external threats such as bacteria, insects, or even the sun. It also acts as a sort...

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Explain why hot water can dissolve certain minerals more quickly than cold water.

Explain why hot water can dissolve certain minerals more quickly than cold water.

When water heats up, the molecules start to jiggle more. Imagine a crowd: the hotter it gets, the more everyone moves and bumps into each...

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Explain why some trees have bark that appears to peel?

Explain why some trees have bark that appears to "peel"?

Trees, somewhat like human skin, regularly replace the protective outer layer of their trunk. This phenomenon is called exfoliation: it’s what gives the impression that...

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Explain why lakes can change color depending on the season?

Explain why lakes can change color depending on the season?

The color of a lake mainly depends on the elements present in its water and how it reflects light. Pure water absorbs red and lets...

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Explain why do pebbles become round at the bottom of rivers?

Explain why do pebbles become round at the bottom of rivers?

Stones gradually become round due to the action of erosion, a natural phenomenon that wears down and transforms rocks over time. Essentially, several forces come...

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