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We have graded each source in this Research Guide according to the following levels.
Brief, easy to read information which may be basic and use informal language. Newspaper articles are generally this level.
Generally includes subject-specific language, provides additional reading and may provide additional background information.
Typically, these will be longer in length, detailed and contain technical information.
You will need a username and password for this article, see your teacher. When you load the article, click on the 1 above the article for that Reading Level. "A volcano is an opening in Earth’s crust. When a volcano erupts, hot gases and melted rock from deep within Earth find their way up to the surface ... "
Living next door to a deadly volcano
"Imagine living in the shadow of a volcano? Well, millions of people do in Naples, Italy, where a massive volcano called Vesuvius exists. This clip explores the dangers posed by volcanoes and investigates some recent and ancient eruptions. Find out some misconceptions about volcanoes and discover how science is helping prevent future catastrophes."
Look deep, down into the Earth
"Imagine tunnelling deep, deep below the Earth's surface. What do you think you would find thousands of kilometres down? Watch this clip to find out what is inside the Earth, what it's made up of and how hot it is. Find out about earthquakes, volcanoes, and geysers, and how they help us to understand about the composition of planet Earth."
"An erupting volcano can blast ash, lava, solid rocks and gases into the air, creating hazards that can kill people, disrupt air travel and destroy property many miles away. "
Mount St Helens Volcano 1980
Volcano Hazards Program: Mount St Helens
"Prior to 1980, Mount St. Helens had the shape of a conical, youthful volcano sometimes referred to as the Mount Fuji of America. During the 1980 eruption the upper 400 m (1,300 ft) of the summit was removed by a huge debris avalanche, leaving a 2 x 3.5 km (1.2 x 2.2 mi) horseshoe-shaped crater now partially filled by a lava dome and a glacier. "
Volcano Hazards Program: 1980 Cataclysmic Eruption
"Magma began intruding into the Mount St. Helens edifice in the late winter and early spring of 1980. By May 18, the cryptodome (bulge) on the north flank had likely reached the point of instability, and was creeping more rapidly toward failure."
US History: Mount St. Helens Eruption
"On May 18, 1980 a volcano in Washington state named Mount St. Helens erupted. It was the largest volcanic eruption in the continental United States since 1915. A giant plume of ash rose from the eruption darkening much of eastern Washington and spreading across much of the United States and Canada."
Mount St Helens facts for kids
"Mount St. Helens is a volcano in the U.S. state of Washington. It is 96 miles (154 km) south of Seattle and 53 miles (85 km) northeast of Portland, Oregon. The volcano is in Cascade Range of mountains."
The Eruption of Mount St. Helens in 1980
"On May 18, 1980, an earthquake struck below the north face of Mount St. Helens in Washington state, triggering the largest landslide in recorded history and a major volcanic eruption that scattered ash across a dozen states."
Mount St Helens
"Mount St. Helens is a volcano located in southwestern Washington state. It’s the most active volcano in the Cascade Range, a mountain range that extends from British Columbia through Washington and Oregon to northern California."