204 questions and answers in this section

Natural Sciences » Meteorology

Explain why do storms produce lightning and thunder?

Explain why do storms produce lightning and thunder?

In a cumulonimbus cloud, the rapid movement of air causes intense friction between ice and water particles. These continuous collisions strip and transfer electrons, creating...

Read full answer

Explain why frogs croak louder in the rain?

Explain why frogs croak louder in the rain?

Frogs produce their famous croak thanks to a vocal sac, a sort of small pouch under their throat that they inflate like a balloon. When...

Read full answer

Explain why rainbows are always curved?

Explain why rainbows are always curved?

When sunlight enters a droplet of water, its path changes slightly: this is called refraction. In the process, white light splits into several distinct colors...

Read full answer

Explain why do avalanches sometimes occur without warning?

Explain why do avalanches sometimes occur without warning?

Beneath the surface of the snow, many invisible things are happening. Very thin layers of snow, called fragile layers, sometimes form without any external signs...

Read full answer

Explain why does the fog dissipate when the sun rises?

Explain why does the fog dissipate when the sun rises?

In the early morning, the rays of the sun gently warm the air and the surface of the earth, gradually triggering the evaporation of the...

Read full answer

Explain why the color of the sky changes at sunrise and sunset?

Explain why the color of the sky changes at sunrise and sunset?

The color of the sky mainly varies due to a phenomenon called Rayleigh scattering. It’s a simple physical effect: when sunlight enters the atmosphere, it...

Read full answer

Explain why the extinction of the dinosaurs was caused by the impact of a giant meteorite millions of years ago.

Explain why the extinction of the dinosaurs was caused by the impact of a giant meteorite millions of years ago.

The main evidence of a meteorite impact causing the extinction of the dinosaurs is the existence of a thin layer of sediment rich in iridium, a metal...

Read full answer

Explain why sound carries less far when it is raining?

Explain why sound carries less far when it is raining?

When it rains, lots of tiny droplets of water fall through the air. These droplets reflect and scatter sound waves, much like a ball bouncing...

Read full answer

Explain why does dew form on the grass in the morning?

Explain why does dew form on the grass in the morning?

At night, the air near the ground gradually cools down. The cooler the air becomes, the less moisture it can hold. As a result, when...

Read full answer

Explain why can lightning cause power outages?

Explain why can lightning cause power outages?

During a storm, the air is electrically charged and creates a huge potential difference between the clouds and the ground. When lightning strikes a conductive...

Read full answer