When Two Oceanic Plates Converge, Some Magma Erupts Under the Ocean

question 130

Multiple Choice

When two oceanic plates converge, some magma erupts under the ocean, forming volcanoes that may rise above the sea. These volcanoes can form a curved:

• A) island arc
• B) line of calderas
• C) sequence of magma chambers
• D) reef

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Definitions:

Prostaglandins

A group of lipid compounds that are produced within the body's tissues and have various functions, including involvement in inflammation and pain.

Estrogen

Substance that exerts biologic effects characteristic of estrogen hormone, such as stimulating female secondary sexual characteristics, growth, and maturation of long bones, and help controlling the menstrual cycle.

Ductus Venosus

A fetal blood vessel that connects the umbilical vein to the inferior vena cava, bypassing the liver.

Umbilical Vein

A blood vessel in a fetus that carries oxygenated blood from the placenta to the fetus.