https://padlet.com/geogstmarks/31791sqyiohj Earth's way of venting! en-us 2016-06-09 08:48:01 UTC 2023-04-05 07:37:28 UTC hello@padlet.com geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114185793 Papa New Guinea]]> 2016-06-09 09:04:23 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114185793 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186213 What do you think?]]> 2016-06-09 09:07:24 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186213 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186378 Look at the different parts of the volcano]]> 2016-06-09 09:09:06 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186378 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186501 Test yourself]]> 2016-06-09 09:10:13 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186501 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186602 See if you knew already!]]> 2016-06-09 09:11:17 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186602 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186781 2016-06-09 09:13:15 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186781 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186864 What type of lava is this?]]> 2016-06-09 09:14:07 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186864 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114186975 2016-06-09 09:15:07 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114186975 geogstmarks https://padlet.com/geogstmarks/31791sqyiohj/wish/114187279 2016-06-09 09:17:07 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114187279 ChrisIsTheBest https://padlet.com/geogstmarks/31791sqyiohj/wish/114841384 Pyroclastic Lava flow]]> 2016-06-16 15:22:39 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/114841384 https://padlet.com/geogstmarks/31791sqyiohj/wish/115219312

1. Magma rises through cracks or weaknesses in the Earth's crust.
2. Pressure builds up inside the Earth.
3. When this pressure is released, eg as a result of plate movement, magma explodes to the surface causing a volcanic eruption.
4. The lava from the eruption cools to form new crust.
5. Over time, after several eruptions, the rock builds up and a volcano forms.

]]> 2016-06-22 08:21:58 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115219312 RetroTech https://padlet.com/geogstmarks/31791sqyiohj/wish/115220200 Composite Volcano
-Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and lava flows.
-The eruptions from these volcanoes tend to be composed more of pyroclastic flows rather than a flow of lava. 
-A pyroclastic flow is a superheated mixture of hot steam, ash, rock and dust. A pyroclastic flow can travel down the side of a volcano at very high speeds with temperatures over 400 degrees celsius.
-When composite volcanoes erupt they are explosive and pose a threat to nearby life and property. Eruptions are explosive due to the thick, highly viscous lava that is produced by composite cone volcanoes. This viscous lava has a lot to do with why they are shaped the way they are. The thick lava cannot travel far down the slope of the volcano before it cools.
-Composite volcanoes are usually found at destructive plate margins.
-Examples of composite volcanoes include Mount Fuji (Japan), Mount St Helens (USA) and Mount Pinatubo (Philippines).

Shield Volcanoes
-Shield volcanoes are low with gently sloping sides and are formed from layers of lava.
-Eruptions are typically non-explosive. Shield volcanoes produce fast flowing lava that can flow for many miles.
-Eruptions tend to be frequent but relatively gentle. Although these eruptions destroy property, death or injury to humans rarely occurs.
-Shield volcanoes are usually found at constructive boundaries and sometimes at volcanic hotspots.
-Examples of shield volcanoes include Mount Kilauea and Maunaloa on Hawaii.

Dome (Acid Lava Cones)
-The (acid) lava is much thicker than lava which flows from shield volcanoes.
-Dome volcanoes have much steeper sides than shield volcanoes. This is because the lava is less viscious. It cannot flow very far before ot cools and hardens. 
-An example is Puy de Dome in the Auvergne region of France which last erupted over 1 million years ago.

Source
[WEBSITE] (http://goo.gl/BeiRM2) What are the different types of volcano?]]> 2016-06-22 08:37:50 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115220200 Nicole_H https://padlet.com/geogstmarks/31791sqyiohj/wish/115260775 - Clouds of fine ash creates breathing difficulties.
- Planes engines become clogged up with dust and ash.
- Gas - clouds of gas reflects the suns rays back into space - earth cools and changes our weather.]]> 2016-06-22 18:20:07 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115260775 Nicole_H https://padlet.com/geogstmarks/31791sqyiohj/wish/115261438 "Lahars"
Ash mixes with water from melting ice or water rain. This creates thick mud like wet cement, which flows downhill gathering stones, boulders, tree trunks and speed. This type of mudflow is known as "Lahars" and can destroy villages.
"Geyser"
Hot springs that boils and erupts again, although it is most unlikely.
"Volcanic Plug"
For example Algeria; Started as magma in vent of volcano. Over millions of years cooled over time and hardens. Soft rocks eroded leaving the plug.
"Volcanic Winters"
Long, cold winters caused by volcanic eruptions can kill plants and crops.]]> 2016-06-22 18:27:49 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115261438 Nicole_H https://padlet.com/geogstmarks/31791sqyiohj/wish/115262015 - Flat
- Cover large area
- Have calderas (whereas normal volcano has crater)]]> 2016-06-22 18:34:31 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115262015 Nicole_H https://padlet.com/geogstmarks/31791sqyiohj/wish/115262202 - Tiny Earthquake
- Escaping gas
- Change in shape of volcano eg. Bulge]]> 2016-06-22 18:36:41 UTC https://padlet.com/geogstmarks/31791sqyiohj/wish/115262202