Here's why:
* Frothy Lava: Pumice forms when lava with a high gas content erupts. The gases trapped within the lava expand and create bubbles.
* Light and Glassy: As the lava cools rapidly, the gas bubbles become trapped, giving pumice its porous and lightweight texture. The rapid cooling also results in a glassy appearance.
Pumice is often used in various applications, including:
* Abrasives: Its rough texture makes it a good abrasive for cleaning and polishing.
* Gardening: It can be used in soil to improve drainage and aeration.
* Building materials: It can be added to concrete to reduce weight and improve insulation.
