1273 questions and answers in this section
Explain why do the oceans have marine currents?

Explain why do the oceans have marine currents?

Ocean currents result from the rotation of the Earth. This phenomenon is mainly due to an effect called the "Coriolis force". When water moves on...

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Explain why the smell of rain is so unique?

Explain why the smell of rain is so unique?

Petrichor is a term that refers to the pleasant distinctive smell that emerges from the ground after rain. This phenomenon is due to a combination...

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Explain why clouds are white during the day and red in the evening?

Explain why clouds are white during the day and red in the evening?

The white color of clouds is due to the scattering of sunlight through the water droplets or ice crystals that compose them. When sunlight comes...

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Explain why moonlight rays can sometimes cause phosphorescence in water?

Explain why moonlight rays can sometimes cause phosphorescence in water?

Phosphorescence is a luminous phenomenon emitted by certain marine organisms, such as certain algae and many planktonic organisms. This light is produced by complex biochemical...

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Explain why ancient Chinese used gunpowder for fireworks?

Explain why ancient Chinese used gunpowder for fireworks?

Gunpowder was invented in China around the 9th century by Chinese alchemists. This substance was initially used for medicinal purposes, but its use quickly expanded...

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Explain why elephants are essential for ecosystems?

Explain why elephants are essential for ecosystems?

When elephants regularly pass through an area, they become true landscape architects. By opening paths through forests, they create essential natural corridors for many other...

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Explain why do some small volcanic islands suddenly emerge from the ocean?

Explain why do some small volcanic islands suddenly emerge from the ocean?

Volcanic islands are mainly formed from underwater eruptions. Initially, underwater volcanoes erupt, projecting lava and ash into the surrounding ocean. This accumulation of volcanic material...

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Explain why fog forms in specific locations.

Explain why fog forms in specific locations.

Fog forms when air is cooled to the point that its temperature reaches the dew point, which is the temperature at which water vapor condenses...

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Explain why fire is red, orange, or blue depending on its temperature.

Explain why fire is red, orange, or blue depending on its temperature.

The color of a flame largely depends on its temperature. Indeed, when combustible materials burn, the temperature of the flame is an important indicator of...

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Explain why Marie Curie chose to dedicate herself to science.

Explain why Marie Curie chose to dedicate herself to science.

Marie Curie showed a keen interest in scientific phenomena from a young age. She was curious to understand how things worked and why natural phenomena...

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