Volcanoes, Earthquakes, and Ocean Floor Features

Vocabulary flashcards covering volcanic observations, earthquakes, the Pacific Ring of Fire, ocean floor depth and rock ages, and features of Lassen National Park.

Pacific Ring of Fire

The region encircling the Pacific Ocean where a high concentration of volcanic eruptions and earthquakes occur along overlapping boundaries.

Bumpass Hell

A hydrothermal site in Lassen National Park noted for its sulfurous odor, distinct pH levels, and geothermal features.

Kendall van Hoek Bumpass

The historical figure after whom Bumpass Hell in Lassen National Park is named.

Lassen National Park Eruption ($1914$–$1917$)

A historical volcanic eruption period in Lassen National Park between $1914$ and $1917$ that propelled ash and smoke high into the atmosphere.

NOAA Hazards Map Viewer

An online mapping viewer located at https://maps.ngdc.noaa.gov/viewers/hazards/ used to examine and compare global geographic distributions of earthquakes and volcanoes.

Ocean Floor Age Scale

A color-coded timeline measured in Millions of Years Before Present, spanning from $0$ to $180$ million years ago to categorize oceanic crust age.

USGS Recent Earthquakes Website

An online resource used to locate and analyze global seismic activity, such as identifying the largest earthquake occurring within the past month.