Q:

What is a medium-sized tephra called?

A:

Medium-sized tephra are called lapili. Tephra are rock fragments ejected from a volcano. The smallest tephra are called ash, while the largest are called blocks if they are solid and bombs if they are liquid.

Tephra can cause many problems in addition to the accompanying volcanic eruption. Tephra clouds can spread hundreds of kilometers and cause periods of darkness affecting plant and animal life. These clouds reduce visibility and cause respiratory issues. They interfere with electric transformers and power lines and cause problems with communication devices. They may also start forest fires and are known to generate electricity for lightning. Larger tephra can collapse structures.

Sources:

  1. nature.nps.gov

Is this answer helpful?

Similar Questions

  • Q:

    What is the largest type of tephra?

    A:

    Tephra, rock fragments ejected from a volcano during an eruption, are called blocks and bombs when larger than 64 millimeters in diameter. Because of their size, blocks and bombs fall close to their volcanic source.

    Full Answer >
    Filed Under:
  • Q:

    What is a cylinder bore?

    A:

    A "cylinder bore" refers to a circular tube drilled into a medium, where the diameter of the tube remains constant. Cylindrical bores are found in many products, such as shotguns, musical instruments and engines. In common usage, the term "cylinder bore" most often relates to shotgun barrels.

    Full Answer >
    Filed Under:
  • Q:

    What is Masonite made of?

    A:

    Masonite is made with wood fibers from pressing wood chips. The wood fibers are steam cooked and molded under pressure to form the shape. It was patented in 1924 by William H. Mason, a friend and student of Thomas Edison, in Laurel, Mississippi.

    Full Answer >
    Filed Under:

Explore