(MUSIC)
JOAN CARTAN-HANSEN, HOST:
AN ACTIVE VOLCANO IS
CONSIDERED TO BE ONE THAT HAS
ERUPTED IN THE LAST FEW THOUSAND
YEARS.
A DORMANT VOLCANO IS ONE THAT
HAS ERUPTED IN RECENT GEOLOGICAL
TIMES BUT IS NOW QUIET.
AN EXTINCT VOLCANO IS ONE WHERE
IT HAS BEEN SO LONG SINCE AN
ERUPTION THAT SCIENTISTS THINK
IT'S UNLIKELY IT WILL EVER GO
OFF AGAIN.
THERE ARE 169 ACTIVE VOLCANOES
IN THE UNITED STATES AND ITS
TERRITORIES.
MOST ARE IN ALASKA, HAWAII AND
SCATTERED IN THE WESTERN UNITED
STATES.
KILAUEA IS THE MOST ACTIVE
VOLCANO ON EARTH.
IT'S BEEN ERUPTING ALMOST
CONTINUOUSLY SINCE 1983.
THE 1980 MOUNT ST. HELENS
VOLCANIC ERUPTION WAS THE
DEADLIEST IN U-S MODERN HISTORY.
57 PEOPLE AND THOUSANDS OF
ANIMALS DIED.
AND IT CAUSED THE LARGEST
LANDSLIDE IN RECORDED HISTORY.
TODAY, ONE IN 20 PEOPLE LIVE
WITHIN THE DANGER RANGE OF AN
ACTIVE VOLCANO.
DO YOU?
FOR MORE INFORMATION ABOUT
VOLCANOES, CHECK OUT THE SCIENCE
TREK WEBSITE.
YOU'LL FIND IT AT
IDAHOPTV.ORG/SCIENCE TREK