Pumice
Common knowledge would say balsa, but there may be a lighter one out there. Cork is pretty darn light, but the light part is technically its bark.
Hydrogen is the lightest substance among these four elements. It has the lowest atomic number and atomic weight, making it the lightest element on the periodic table.
The heaviest rock in the world is probably the Baobab granite in Australia, which weighs about 1,500 tonnes. This massive rock formation is still attached to the ground and has not been moved from its original location.
The lightest weight element that is not a gas at room temperature is lithium. It is a solid metal with a low density and atomic number 3.
Pumice, being mostly composed of air bubbles, is surprisingly light for a rock. So light, in fact, that it can float on water.
no scoria is the lightest it is volcanic and has many holes in
pumice
scoria
Pumice is the lightest type of rock. It is formed from lava that is full of gas, which creates a frothy texture that allows it to float on water.
The lightest rock on Earth is pumice, which typically has a weight of around 0.25 to 0.6 grams per cubic centimeter.
ANSWER:The ant is the lightest animal in the world.
the lightest football cleat is nike vapor jett
The lightest palne was a dog plane
the aerogel
Yes it is, and it's also the lightest gas in the universe.
The lightest known metal in the world is lithium. It is an alkali metal with a low atomic mass and density, making it extremely light compared to other metals.
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