1273 questions and answers in this section
Explain why do caves naturally form in certain limestone rocks?

Explain why do caves naturally form in certain limestone rocks?

Limestone rocks are mainly composed of calcium carbonate, usually in the form of a mineral called calcite. This calcium carbonate often comes from the consolidation...

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Explain why pepper is spicy?

Explain why pepper is spicy?

The spiciness of pepper mainly comes from a molecule called piperine. This organic molecule is primarily found in the outer coating and seeds of the...

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Explain why it sometimes rains fish?

Explain why it sometimes rains fish?

Some theories have been proposed to explain the strange phenomenon of raining fish. Among them, one possible explanation is the phenomenon of waterspouts, which are...

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Explain why a fan creates wind?

Explain why a fan creates wind?

When a fan is running, the blades spin rapidly, pushing the air in front of them. Since air is a fluid, it moves easily and...

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Explain why a CD can reflect light in a multicolored way?

Explain why a CD can reflect light in a multicolored way?

When a light wave comes into contact with a surface, a portion of this light bounces off the surface in a phenomenon called reflection. The...

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Explain why pelicans can swallow so many fish without choking?

Explain why pelicans can swallow so many fish without choking?

Pelicans have the amazing ability to swallow large fish thanks to their expandable pouches. These pouches are located under their beak and can stretch to...

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Explain why some materials conduct electricity and others do not?

Explain why some materials conduct electricity and others do not?

In materials conducting electricity, atoms are arranged in such a way that electrons can move easily from one atom to another. Metals, for example, have...

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Explain why hail can be of such different sizes?

Explain why hail can be of such different sizes?

Hail formation begins inside a thunderstorm cloud, where powerful updrafts lift tiny water droplets. These droplets are carried to the top parts of the cloud, where the...

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Explain why a tennis ball bounces higher in hot weather than in cold weather?

Explain why a tennis ball bounces higher in hot weather than in cold weather?

The temperature of the air and the surface of the ground plays a crucial role in how a tennis ball bounces. Indeed, when the temperature...

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Explain why mountains form in chains rather than individually?

Explain why mountains form in chains rather than individually?

The Earth is not a stationary block: its surface is divided into large pieces called tectonic plates. These plates move slowly relative to one another...

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