Characteristics and Uses of Volcanic Rock

The video tutorial describes a volcanic rock that is typically red or grayish brown with a vesicular texture. It cools quickly, making it very light, and is often used for ground cover. This rock is classified as a felsic type of volcanic rock.

What is the typical color of the volcanic rock described?

• Blue

• Red or grayish brown

• Green

• Yellow

What is a notable feature of the rock's texture?

• Fibrous

• Smooth

• Vesicular

• Granular

For what purpose is this volcanic rock commonly used?

• Building construction

• Ground cover

• Sculpting

• Jewelry making

What is a characteristic of the rock that makes it suitable for ground cover?

• Heavy weight

• Very light

• High density

• Opaque

How is the volcanic rock classified in terms of its composition?

• Felsic

• Mafic

• Ultramafic

• Intermediate