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volcano.oregonstate.edu/what-are-some-good-things-volcanoes-do

Volcanoes make islands and add to the continents. Volcanic deposits are also used as building materials. In the 1960’s Robert Bates published Geology of the Industrial Rocks and Minerals. He noted that basalt and diabase are quarried in the northeastern and northwest states. Most of the basalt and diabase is used for crushed stone: concrete ...

www.answers.com/Q/How_are_volcanoes_are_helpful_and_harmful

Volcanoes are helpful, because when a volcano erupts it spits out lava, after a while the lava dries out and hardens, sometimes the dried out lava forms a new island. Also, because some people ...

www.answers.com/Q/Why_are_volcanoes_helpful

Volcanoes are helpful, because when a volcano erupts it spits out lava, after a while the lava dries out and hardens, sometimes the dried out lava forms a new island. Also, because some people ...

betterlesson.com/.../volcanoes-helpful-or-harmful-prove-it

So are volcanoes helpful or harmful? What do you think? Did you find any new information that changes your original thoughts? Talk it over with your partner (see video clip). Actually, volcanoes can be both harmful and helpful. So we go back and revise our previous findings by adding either harmful or helpful to their original claim.

www.universetoday.com/32576/benefits-of-volcanoes

What Are The Benefits Of Volcanoes? Volcanoes are renowned for their destructive power. In fact, there are few forces of nature that rival their sheer, awesome might, or have left as big of impact ...

answers.yahoo.com/question/index?qid=20061116161339AAuWnOh

On a smaller scale, our garden was extremely prolific. Geologists told us that the soil became extra-fertile because of the ash and silicone from the volcano. That's from personal experience. On a world-wide scale, eruptions take pressure off and keeps another super volcano from erupting and causing mass extinction.

pubs.usgs.gov/gip/volc/people.html

Volcanoes and People. Volcanoes both harass and help mankind.As dramatically demonstrated by the catastrophic eruption of Mount St. Helens on May 1980 and of Pinatubo in June 1991, volcanoes can wreak havoc and devastation in the short term.

en.wikipedia.org/wiki/Volcano

A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.

www.reference.com/science/benefits-volcanoes-humans-68bce...

What Are the Benefits of Volcanoes to Humans? Despite the fact that volcanic eruptions contribute directly to thousands of human deaths each year, they do offer a number of direct and indirect advantages to people.

owlcation.com/stem/How-Does-a-Volcano-Form

Volcanoes are natural features of the Earth's lanscape. Volcanoes form from the natural internal forces acting inside the Earth. Mos volcanoes form at the boundaries of tectonic plates either in the ocean or on land. Others may form away from the boundaries of plate tectonics; however all volcanoes are formed from the natural internal energies occurring inside the planet.