Pacific Ring of Fire facts for kids

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Pacific Ring of Fire
The pacific ring of fire
MSH80 st helens eruption plume 07-22-80
Eruption of Mount St. Helens on July 22, 1980.

The Pacific Ring of Fire is an arc around the Pacific Ocean where many volcanoes and earthquakes are formed. About three quarters of the world's dormant volcanos and active volcanos are here. The ring is 40,000km long, and there are 452 volcanoes.

About 90% of the world's earthquakes and 15% of the world's largest earthquakes occur along the Ring of Fire. The next most seismic region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Mid-Atlantic Ridge is the third most prominent earthquake belt.

The Ring of Fire is a direct result of plate tectonics and the movement and collisions of crustal plates.

Cause

Plates tect2 en
Tectonic plates of the world

The Ring of Fire is a direct result of plate tectonics: the movement and collisions of lithospheric plates. The eastern section of the ring is the result of the Nazca Plate and the Cocos Plate being subducted beneath the westward-moving South American Plate. The Cocos Plate is being subducted beneath the Caribbean Plate, in Central America. A portion of the Pacific Plate and the small Juan de Fuca Plate are being subducted beneath the North American Plate. Along the northern portion, the northwestward-moving Pacific plate is being subducted beneath the Aleutian Islands arc. Farther west, the Pacific plate is being subducted along the Kamchatka Peninsula arcs on south past Japan. The southern portion is more complex, with a number of smaller tectonic plates in collision with the Pacific plate from the Mariana Islands, the Philippines, Bougainville, Tonga, and New Zealand; this portion excludes Australia, since it lies in the center of its tectonic plate. Indonesia lies between the Ring of Fire along the northeastern islands adjacent to and including New Guinea and the Alpide belt along the south and west from Sumatra, Java, Bali, Flores, and Timor.

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Pacific Ring of Fire Facts for Kids. Kiddle Encyclopedia.