0
Pumice is formed as a product of a violent volcanic eruption. It is formed from a very thick lava, thick because it contains so much gas, because of its mineralogy (specifically the higher Silica content) and because of the temperature at which it is erupted (lower). Some lava is projected out of the volcano, cooling in flight, and the gas bubbles are also retained in the structure of the rock (known as vesicles). These vesicles are what give it a sponge-like structure.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What rock looks like sponge?
it's pumice also known as the worlds lightest rock because it can float on water
What are six porous substances?
gravel soil paper towel cotton sponge pumice
What is pumice feel like?
Pumice, an igneous rock, is generally white to dark gray.
What is pumice and what causes pumice to be light enough to float on water?
Pumice has an extremely low density due to its vesicular nature. Obsidian is not characteristically vesicular like pumice and its density is greater. Therefore, in equally sized samples pumice is lighter.
Why does scoria have a similar texture to pumice but does not float on water like pumice?
Scoria has thicker vesicle walls than pumice does. This means it has a lower proportion of open space in it, making it less dense than water.
Which mineral has a sponge like appearance?
Pumice
What igneous rock has tiny holes that look like a sponge?
pumice
What rock looks like sponge?
it's pumice also known as the worlds lightest rock because it can float on water
What is the role of spicules sponges?
Spicules, like our skeleton, give the sponge structure. Without spicules, Sponge Bob would be Sponge Blob.
What are six porous substances?
gravel soil paper towel cotton sponge pumice
What is a light porous volcanic rock called?
Pumice. It floats on water due to its vesicular structure.
Does pumice absorb water?
Pumice is an extrusive igneous rock that has a lower density than an equal volume of water. Pumice forms from an airborne, rapidly cooled frothy magma, full of tiny gas pockets, making it extremely light in weight.
Why does pumice have no crystal structure?
Pumice is made of glass. Glass forms when molten rock cools too quickly for crystals to form.
Which term describes a material that is full of tiny connected air spaces?
a rock that is full of tiny, connected air spaces is PERMEABLE
What does pumice feel like?
It feels like a rock. Your welcome.
Why adsorption occur?
adsorption is when there are spaces in molecular structure of material. the adsorbed substance is held in these spaces like in sponge.
What adaptations do saprophytes have?
1 they look like a funny plant 2 their seeds are protected by a sponge like structure present on the top of the fugus
