If an Ash Flow Approaches You from the Opposite Side

question 10

Multiple Choice

If an ash flow approaches you from the opposite side of a large hill,are you likely to be safe?

• A) Safe. You are fine being behind a hill; ash flows go down valleys.
• B) Safe. The ash flow would stop at the hill or go around the sides of it.
• C) Safe. You can duck, and it will go over the top of you.
• D) Not safe. If you are close to the volcano, fast-moving ash flows can go over nearby hills.
• E) Not safe. Even well away from the volcano, when the ash flow reaches the top of a hill, it picks up speed going down the far side, and that takes it to the top of the next hill, and so on.

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Definitions:

Platelets

Small, disk-shaped blood cells essential for blood clotting and wound healing.

Cytoplasm

The material or protoplasm within a living cell, excluding the nucleus, containing various organelles and inclusions important for cell function.

Bone Marrow

A soft, spongy tissue found inside bones that is the primary site of new blood cell production or hematopoiesis.

Lungs

Paired respiratory organs in the chest of vertebrates with structures facilitating gas exchange between blood and the atmosphere, primarily for oxygen uptake and carbon dioxide excretion.