1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Amanda [17]
3 years ago
12

35. What factor primarily controls the viscosity, and therefore the explosiveness of a magma? A. Dissolved gases B. Pressure C.

Temperature D. Water E. Mineral content
Geography
1 answer:
Rasek [7]3 years ago
8 0

Answer:

E. Mineral content

Explanation:

Viscosity is an internal property of a fluid that offers resistance to flow, the nature of volcanic eruptions is highly dependent on magma viscosity and also on dissolved gas content (dissolved gases become trapped by thick magma and the magma chamber begins to build pressure).  

The viscosity of magma is controlled by the size of the molecules that comprise it.

<em>Felsic lava contains elements of small size (sodium and aluminum), these elements form polymers and large crystalline macromolecules like silica, the more extensive silicate chain molecules the more viscous the magma becomes, this happens because larger molecules have stronger  intermolecular bonds preventing movement and spreading. </em>

Mafic and ultramafic lava, on the other hand, have lower viscosities, also contain lower quantities of silica and aluminum and are rich in magnesium oxide, which does not form large molecular structures, therefore lava flows smoothly, unrestricted by intermolecular forces.  

I hope you find this information useful and interesting! Good luck!  

   

You might be interested in
ATB: Why do people use maps which are flat to help them find
tangare [24]

Answer:

a map is a model

Explanation:

maps are models. I know it is hard to believe. maps can have many things like land forms and roads and rivers and everything else to show us the land.

5 0
2 years ago
Explain 5As of tourism in the paris
kifflom [539]

Answer:

Attraction: It includes all those factors which attract a tourist. ... Accessibility: It is how to access or reach to that place of attraction. Ways to reach. Accomodation: Place to stay or accomodate while travelling for rest or overnight stays.

8 0
3 years ago
What are the positive and negative effects of geological structures in our environment?
Marrrta [24]
The negative effects of geological structures in our environment can be landslides occurring on unfavorably oriented geological structures causing damage and sometimes loss of life on highways and railways, for example.A positive effect of geological structures is that where there are subduction zones, mineral deposits can form above them on the adjoining continents like in British Columbia on the west coast of North America. Also, faults and fractures can allow hydrothermal fluids charged with metals to form ore deposits.  
7 0
2 years ago
Read 2 more answers
Differentiate between tropical evergreen and tropical deciduous forests.
Salsk061 [2.6K]

The tropical forests can roughly be divided into two major groups, tropical evergreen forests and tropical deciduous forests. The division is made in accordance to the characteristics of the trees.

The trees in the tropical evergreen forests are green throughout all of the year. The reason behind this is that they have constant temperature all year long, and constantly high amounts of rainfall all year long, so there is no need for them to shed their leaves.

The trees in the tropical deciduous forests, on the other hand, are shedding their leaves. This means that in one part of the year these trees have green leaves, while in the other part of the year they are shedding their leaves and the branches are stripped. The main reason behind this is that the rainfall occurs only seasonally, when pretty much all rainfall for the year falls in few months. After that, a very long period of drought and very high temperatures starts. In order to survive and not get damaged, the trees are shedding their leaves, thus they almost put them selves in an hibernating phase until the next rainy season.

6 0
2 years ago
What factors in Earth's relationship to the Sun make life on Earth possible?
Citrus2011 [14]
One is that we are the perfect distance therefor it is not to hot for life or to cold for life on earth
7 0
2 years ago
Other questions:
  • Which of the following agricultural clusters deals most directly with the dangerous problem of pollution?
    13·1 answer
  • Which mountain range forms the continental divide?
    7·1 answer
  • What percentage of the scottish population has natural red hair?
    7·1 answer
  • Where were the earliest major American cities located?
    8·1 answer
  • In which state does the Mississippi River begin
    15·2 answers
  • Wegener’s hypothesis of __________________________ stated that Earth’s continents had once been joined as a single landmass.
    6·1 answer
  • Which of the following terms best describes a prolonged change to weather patterns over time? A. meteorology B. a cold front C.
    13·2 answers
  • Many dinosaurs fossils have been found in the UK. Bet none ane less than 65 million years old. Explain​
    10·1 answer
  • When the edges of tectonic plates shift and energy is released, what is the most likely result?.
    13·1 answer
  • You are a newspaper journalist that has had the opportunity to travel back in time to view what Europe was like prior to World W
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!