This is my volcano model for my PBL .This photo is about my PBL/volcano
How to make the model:first I cut some cardboard then shapes that into a circle as well as shaping chicken wire so that it looks like a real volcano when it is finished. Then made some glue so that I could paper mache all on the chicken wire. Then I went to get some paint and paint brushes to start to paint.
Contents page
1.
|
Introduction
|
2.
|
How volcanoes are formed?
|
3.
|
What are volcanic rocks?
|
4.
|
What impact do volcanoes have on the world we live in?
|
5.
|
|
6.
|
|
INTRODUCTION.
Have you ever thought how a volcano erupts? Do you think you can stand the heat? This is a report about how volcanoes are formed, what they are and what impact volcanoes have in the world we live in.
How volcanoes are formed.
The earth has four layers. The thin outer layer is called the crust. Below the crust is the mantle. The outer core is made of hot liquid metal and lies beneath the mantle. The solid inner core is at Earth’s center. Earth’s crust is made of massive moving pieces called tectonic plates. When the tectonic plates move a crack in the crust opens so that melted rock from mantle can squeeze it’s way to the surface. The Volcano forms when some of the very hot, liquid rock squeezes through gaps between the plates of the earth.The magma forces its way up. As it rises, it melts rock that gets in it’s way, making a tunnel all the way through the crust.
Near the top/runga, it gets stuck. More and more hot rock rises. Over a lot of years,the amount of hot rock pushing on the crust gradually builds up. Suddenly there is so much that it bursts through the crust-the volcano erupts. It is a bit like the way that a bottle of fizzy/inu mirumiru suddenly fires out when you open the lid after shaking it.
But did you know a volcano can be flat?The ring of fire is an area in the pacific ocean that has about 450 volcanoes. This area stretches for about 24,800 miles (40,000 km). Volcanoes aren’t the only feature it’s known for. When a volcano erupts it can cause serious landslides and the volcano will also get bigger. Sometimes when a volcano erupts little volcanos start to grow on the big volcano. When lava is underground it is called magma. Not all volcanoes are cone shaped. Within the Taupo Volcanic Zone there are three volcanoes still active: Ruapehu Tongariro, and Ngarahoe.It is the largest active volcano in New Zealand and is located at the southern end of the Taupo Volcanic Zone.
Obsidian is an igneous rock that’s formed when a molten rock cools very rapidly.the result is a rock that cooled so fast, crystals did not get a chance to(ko) form. Obsidian is a volcanic glass with a smooth and uniform structure.
|
Rhyolite is a felsic forced
rock. Due(nāwai to(ko) the high silica content, rhyolite lava is very dangerous. It flows slowly, like toothpaste getting squeezed out of a tube, and tends to(ko) pile(whakapipi) up and form lava
|
Basalt forms when lava reaches the Earth's surface at a volcano or mid ocean ridge. The lava is between 1100 to(ko) 1250° C when it gets to(ko) the surface. It cools quickly, within a few days or a couple weeks, forming solid rock. ... The "ropes" form when the surface cools, becoming solid rock while lava flows beneath it.Basalt
Is the most common rock and it is mostly found on the surface of the volcano and (kōrua)basalt is found on the moon.
|
What impact do volcanoes have in the world we live in?
A volcanic eruption can harm farming,destruction work and it will cause a lot of damage. But it can also help with heating. There are some volcanic rocks that are useful to us humans such as pumice. A volcano also changes the weather. When a volcano erupts the wind can spread the dust all around the earth.If the ash and mud from a volcanic eruption mix with rainwater or melting snow, fast moving mudflows are created. These flows are called lahars.I guess the main good effect that volcanoes have on the environment is to provide nutrients to the surrounding soil.
Acrostic Poem
Lava rocks can be like glass such as obsidian, also it drys out so fast that diamond does not have a chance to form.
Auckland has 53 volcanoes.
Volcanoes are usually located where tectonic plates meet.
A Volcano form when some of the very hot, liquid rock squeezes through gaps between the plates of the earth.
Glossary
Pungarehu: The dry dusty remains from a fire.
Pokapu: The middle of something.
Tahepuia: Red hot molten rock that flows out of a volcano.
Volcanic moutere: A volcano that makes a island on the .sea.
Tokarewa/molten: molten means melted into a hot liquid.
Meto: means like it is dead.
My goals.
Nouns - Proper, common, collective abstract
Subject words
2) I attempt to write words I don’t know by using my sound/letter
knowledge, vowel sounds and more complex spelling patterns).