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givi [52]
3 years ago
9

The Ring of Fire is a string of volcanic sites in the Pacific Ocean that stretches between the Americas, Asia, and Australia. Wh

at is the most likely cause of this volcanic activity?
The release of pressure from the Earth’s core through weak portions of the tectonic plates
The movement of mantle rock through the cracks between tectonic plates
The melting of tectonic plates by particularly hot parts of the Earth’s crust
The explosion of energy as a result of a collision between two nearby tectonic plates
Chemistry
2 answers:
Vladimir [108]3 years ago
8 0

The movement of mantle rock through the cracks between tectonic plates

Our Earth is not a static planet. The crust, the part where we live, is above a more fluid componet, the mantle. Where the crust thin out, it is possible that the mantle comes to the surface, causing a series of phenomenon like volcano activities and earthquake. This is particularty visible in the Ring of Fire, because there a lot of those cracks in this zone.

yuradex [85]3 years ago
6 0
The best and most correct answer among the choices provided by the question is the second choice. The activities in the ring of fire are mainly caused by t<span>he movement of mantle rock through the cracks between tectonic plates.</span> I hope my answer has come to your help. God bless and have a nice day ahead!
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Which of tge following is an example of a chemical change
Effectus [21]
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3 years ago
Which of these is the most accurate description of the job of an art conservationist?
stiv31 [10]

Answer:

Cultural conservation is concerned with how cultural material is preserved as it moves from the past, through the present and into the future. This material may be books in libraries, documents in archives, objects or artwork in museums, or items owned by a community, a family or an individual.

It is the conservator’s job to help ensure the material’s protection and safe passage into the future for as long as is possible.

Art conservation is a complex and highly interdisciplinary task, requiring a knowledge base that may include methods of manufacture, the mechanisms of damage and the cultural significance of an object. Art conservators use history to understand why and when an artwork was made and science to understand how it was made and what has happened to it over time.

When the history of a painting is unclear, conservators will turn to art history to contextualise the work and to science to investigate the evidence of the date and method of manufacture.

Thorough examination and documentation is always the first step in conservation. This involves assessing the original structure and materials of the object, the extent of deterioration, damage and loss, and to ascertain previous restorations or other interventions.

Restoration and preventative conservation

Walters Art Museum

The terms “conservation” and “restoration” are often used interchangeably, but they represent very different activities.

Restoration seeks to modify the appearance of an object to reduce the visual impact of deterioration or damage and to restore visual continuity. Although conservation may involve restoration, more usually it’s engaged with preventing damage and deterioration.

Preventive conservation brings knowledge of the mechanisms of deterioration to provide the best options for the long-term care of cultural material. Take the example of a newspaper page turning yellow and brittle in the hot summer sun – knowing how the cellulose in the paper ages, that this process involves the creation of acid and that this acid contributes to the discolouration and deterioration of paper, means that appropriate steps can be taken to mitigate this process.

Preventative conservation is a predictive and holistic activity, often involving whole collections.

The operational aspects of air conditioning in museums are often the concern of conservators. Chemical and physical reactions involved in deterioration increase with higher temperatures and with cyclic changes in humidity. As a result, materials may crack or become brittle.

On one hand it makes sense to have continuous and stable air-conditioning; on the other hand, air-conditioning is energy-intensive and expensive to run. Understanding the issues, weighing the risks and advising on the best options for the collection is the job of the conservator.

Craftsmanship and ethics

Conservation also requires exceptional craftsmanship and art-making skills such as those employed in the original creation of the artwork; being able to replicate the paint layers, carve a section of an object to replace a lost part, or cast a sheet of handmade paper to use as a fill for a large hole are some examples of these kinds of skills.

There are also conservation-specific skills. The torn edges of a painting’s canvas support may need to be rewoven thread by thread. A hole may require a patch which will then require a complex fill of the ground layer (the layer of gesso applied to the canvas to provide a smooth painting surface), paint and varnish that replicates the surrounding painting.

Elizabeth Buie

In some cases the painting’s conservator will simple “tone” areas, adjusting the degree of lightness or darkness, so that the viewer can still read the extent of damage in the image. In other cases the conservator will make the image as complete as possible by “inpainting”, reconstructing lost or deteriorated parts, so that the loss is virtually invisible.

Art conservation became a profession in Australia in 1973 and concerned at how best to support and develop programs for cultural materials conservation, the Australian Institute for the Conservation of Cultural Material (AICCM).

Under the AICCM’s Code of Ethics and Code of Practice, any intervention by a conservator on an object has to be reversible – in practice, that means using materials and techniques that can be removed easily in the future.

That’s one reason why an oil painting is never inpainted with oil paint. Oil paint cross-links with age until it forms a hard, plastic surface. In a few short decades a restoration done in oil paint will only be able to be removed with solvents that are strong enough to also remove the original paint.

This concept of reversibility is aligned to the concept of minimal intervention; and both require good documentation, usually a condition and treatment report accompanied by good images.

Explanation:

4 0
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The microwaves in an oven are of a specific frequency that will heat the water molecules contained in food. (This is why most pl
statuscvo [17]

Answer:

2E-24

Explanation:

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Ba(oh)2+H3po4+h2o how is it <br> balance ?
Igoryamba

Answer:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + 6H2O

Explanation:

Ba(OH)2 + H3PO4 —> Ba3(PO4)2 + H2O

There are 3 atoms of Ba on the right side and 1atom on the left side. It can be balance by putting 3 in front of Ba(OH)2 as shown below:

3Ba(OH)2 + H3PO4 —> Ba3(PO4)2 + H2O

There are 2 atoms of P on the right side and 1atom on the left. It can be balance by putting 2 in front of H3PO4 as shown below:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + H2O

Now, there are a total of 12 atoms of H on the left side and 2 atoms on the right side. It can be balance by putting 6 in front of H2O as shown below:

3Ba(OH)2 + 2H3PO4 —> Ba3(PO4)2 + 6H2O

Now the equation is balanced as the numbers of the atoms of the different elements present on both sides are equal

4 0
3 years ago
Can anyone help me with any of the questions
Dafna11 [192]
Use the chart to help you look carefully at the numbers and the volumes to figure the questions out hope this helps
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