Download Why do volcanoes erupt?

© Ron Dahlquist/Aurora Photos
Kilauea, on the island of Hawaii, may be the world’s most active volcano. As long as the history of this eruptive
peak has been documented, it’s been sending rivers of molten rock cascading across the landscape, and
spraying volcanic gas into the air. The most recent eruption was a months-long, but not severe, flow of lava
tubes this past spring and summer.
SUGGESTIONS
Why do volcanoes erupt?
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What is the full definition of a volcano?
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Name three volcanoes, each from different continents.
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What is lava?
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Why do volcanoes erupt?
Image
Search
Find a visual representation of the process by which a volcano
erupts.
Bing for Schools Lesson Plan: 5-8
Web Search
What is the full definition of a volcano?
From a Bing Search:
Volcano: opening in Earth's crust: a naturally occurring opening in the
surface of the Earth through which molten, gaseous, and solid material is
ejected.
(Possible queries: “what is a volcano”)
Web Search
Name three volcanoes, each from different continents.
A list of countries with volcanoes is here, where choosing a country
provides a list of the volcanoes, both active and inactive, that are located in
that country. Three volcanoes on different continents are:
1. Mt. Cameroon (in Cameroon, on the continent of Africa)
2. Isla El Tigre (in Honduras, on the continent of North America)
3. Chimborazo (in Ecuador, on the continent of South America)
(Possible queries: “volcanoes of the world”)
ANSWERS & STRATEGIES
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What is lava?
From a Bing Search:
Lava: molten rock flowing from volcano: molten rock that originates in the
Earth's mantle and flows from a volcano or a fissure on land or the ocean
floor
Depending on its composition, lava can be categorized as basaltic,
andesitic, or rhyolitic. The different types of lava move in different ways
including pahoehoe, A'a, sheet, and block flows. Lava cools and becomes
igneous rocks.
(Possible queries: “what is lava”)
Web Search
Why do volcanoes erupt?
From Discovery Kids:
In a volcanic eruption, hot lava spews out from beneath the Earth's crust
up to the Earth's surface. This lava is actually hot melted rock called
magma. Just underneath the Earth's crust is a layer called the mantle,
which is made of up plates that are always moving and shifting.
Sometimes the plates separate. That creates heat and causes the mantle
to melt into magma. The magma comes up through the crack between the
plates. It spreads out, cools down, and becomes rock again. The solid
magma stays beneath the Earth's surface. Sometimes the plates collide.
When that happens, one plate can slide under the other. This also causes
the mantle underneath to melt. The magma pushes upward, melting more
rock. The hot magma collects under the surface of the Earth. If the
pressure is high enough or a crack opens in the crust, the magma spews
out. Now it is called lava.
(Possible queries: “why do volcanoes erupt”)
Bing for Schools Lesson Plan: 5-8
Image
Search
Find a visual representation of the process by which a volcano
erupts.
STANDARDS
Using the previous search terms, select the “images” link on the Bing
Search Page in order to find a representation of the process of volcanic
eruption. One such image is here.
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Informational
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Bing for Schools Lesson Plan: 5-8
CCSS.ELA-Literacy.RST.6-8.2 Determine the central ideas or conclusions of a text; provide an
accurate summary of the text distinct from prior knowledge or opinions.
CCSS.ELA-Literacy.RST.6-8.4 Determine the meaning of symbols, key terms, and other domainspecific words and phrases as they are used in a specific scientific or technical context relevant to
grades 6–8 texts and topics.
CCSS.ELA-Literacy.RST.6-8.7 Integrate quantitative or technical information expressed in words in a
text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph,
or table).
CCSS.ELA-Literacy.RI.7.4 Determine the meaning of words and phrases as they are used in a text,
including figurative, connotative, and technical meanings; analyze the impact of a specific word choice
on meaning and tone.