Understanding Pumice: A Unique Igneous Rock

What does the term 'extrusive' refer to in the context of rocks?

• Rocks that form from slowly cooling magma

• Rocks that form from rapidly cooling lava

• Rocks that are formed deep within the Earth

• Rocks that contain large crystals

What characteristic of pumice allows it to float on water?

• Its vesicular texture

• Its high density

• Its large crystal size

• Its high mineral content

Which of the following minerals is NOT commonly found in pumice?

• Feldspar

• Quartz

• Hornblende

• Augite

In which industry is pumice most popularly used for its exfoliating properties?

• Personal care

• Jewelry making

• Construction

• Agriculture

What is a common use of pumice in construction?

• Due to its lightweight and strength

• For its insulating properties

• As a heavy-duty building material

• As a decorative stone