Tuesday, October 12, 2010

Grade 8 Week 5: Volcanoes!

After the great ideas we saw last week in Earthquake Engineering I am looking forward to this week's designs. This week we move from earthquakes to volcanoes. Remembering what we discovered in the fist section about the inside of the Earth and how it moves, answer this week's questions:

What causes volcanoes?
How do they form?
What are the effects of volcanic eruptions?

This weeks contract has A contracts designing or modeling a volcano. I am still looking for an actual composite volcano beyond the science fair vinegar/baking soda coming from a cup. I did that back in my days at Fairview. You can design something better, something...more...real?

32 comments:

Stuart said...

A volcano is caused by very hot materials called magma riseing to the surface of the crust. A volcano can form from erupted material. The effects of a volcano are total destruction, ash clouds takeing away needed oxyogen, and lava melting any thing in its path.

Stuart Thiel said...

A volcano is formed when two plates hit each other,one goes down and becomes molten.Then later the molten material finds a hole in the ground then it comes up to the surface,but when the magma cools itforms a volcano.If a volcano erupts it can send rock fragments flying toward populated areas,the lava will melt anything in its path,and ash clouds can cover entire cities.

Rachel Miller said...

How do they form?

when plates collide one goes up creating a mountain, when magma seeps through the cracks it forms a volcanoe.

What are the effects of volcanic eruptions?

the lava can burn houses and many acres of land and can injure people or some times kill people.

Stephanie T. said...

The effects of volcanic eruptions can be very dangerous. Some effects are the lava thats burns down houses. Smoke, ash, and rock fragments in the air can cause the air to be hard to breathe in, and even hard just to see.Most of the volcanoes form around boundry lines.

josh lienau said...

can a valcono form from a moutain

matthew said...

Valcanoes are caused by two plates colliding and one goes underneath the other, becoming molten. This then finds the magma chamber and then it evenually goes up and out of the valcano. The effects of volcanic eruptions can be very deadly. Pyroclastic flow with is a mixture of gas and rock runs down volcanoes and destroys everything in its path. Also the lava from the valcano rushes through cities and burns down houses and other buildings. It depends how explosive the valcano with be with the amount of silica in the lava. Depending on that either the lava can rush fast or ooze slowly. It really doesn't matter however because both ways are deadly.

Unknown said...

Volcanos are formed by faults by boundies like in the ring of fire it is formed on the pacific plate going under the us plate thats why their is volcanos and earthqaukes in the ring of fire. They form like mountains but when the plates move and form a mountain magma comes up the crack and forms a volcano. Volcanos can destory cities homes

Anonymous said...

Volcanoes first start out as mountains and the pressure built up inside is released through the top and will cause ash and other debris to fly in the air. Volcanoes's lava can cause almost everything in their way to burn down.

Rachel Miller said...

a shield volcano forms when balastic lava spills out over land and as the lava gets farther from where it spilled it gets thiner. as the lava hardens it can't pile up. this creates a gently sloping volcano.

Nick Casper said...

How does magma rise to the surface of the crust?

josh leinau said...

how do cynder cone volcanoes form

Addy Miller said...

Why did the water in the lake turn into acid?

Moses said...

Silica gets into the volcano when there is a oceanic continental because the oceanic crust sinks under and the oceanic crust has silica in it. Then it melts and goes up into the continental crust. That is how silica gets into the volcano.

Giese said...

how high does a valcano insides go up when they blow

Moses said...

What is the biggest volcano and what volcano had the largest eruption.

Cara Bardon said...

Volcanoes form from moving techtonic plates, or from faults. There are three different types of volcanoes composite, cinder cone, and shield.They have major distruction and have manby effects.

Jack Sacket said...

what kind of material forms volcanoes

Paytn Blanke(: said...

There are three different types of volcanoes. Sheild, Composite, and cynder cone. Each of them have the lava come out in different ways. They also each have different amounts of cilica.

Stephanie T. said...

An effect that volcnoes can cause that I learned from watching the movie Dante's Peak,is that the water can become very acidic. In the movie the water was full of sufuric acid. It ate through the metal in the boat. It would burn you if you went in it. It can also cause wildlife and trees to die.

Jetzer said...

what is worst in a volcano the rock fragments or the earthquakes

Willie said...

Volcanoes are pretty cool. Volcanologists get to travel all over the world for work too, that would be pretty cool.

Herby Dunn said...

can any mountain turn into a volcano?

Paige said...

How do volcanoes form:

Volcanoes form from two plates colliding with the more dense one going under the less dense one. :D

Herby Dunn said...

can any mountain turn in to a colcano?

Katie Trakel said...

Volcanoes form when two plates collide into eachother,the less dense plate goes over the more dense plate. The land is pushed up into a big mountain where the magma is pushed up by the pressure from the gases in the silica. :)

Cam Hauser said...

Some effects of a volcano can be, flying rock fragments, volcanic ash, lava flow, pyroclastic flow, earthquakes, tsunamis, sometimes damage of property and deaths if the volcano is close to cities and people.

Michaela said...

Volcanoes form from two plates colliding into eachother, and the dense plate goes under the other plate. Megma also gives pressure that is caused by the gases that get stuck because of the silica, which pushes up toward the earths surface. Effects that can be caused is ash & rock fragments in the air.

Drew said...

Volcanoes can be made of cooled magma from the earths surface. Shield Volcanoes are made from ash and lava.

ben wentz said...

how high can volcanoes get to be? and how long accross the bottom are they? how big is the center that holds all the magma?

Brady G said...

What are the effects of volcanic eruptions?
There are many effects of volcanos ranging from lava flow, pyroclastic flow, ash clouds rock bombs and fragments, geysers opening up, earthquakes, and some times lava explosions.

josh said...

what is the farest destance lava went before hardnig and cooling

April LaBoy said...

does it depend on the magma chamber for how big the volcano will be..or the damage?