Answer:
Magma are the hot molten materials that rises up towards the surface due to the increasing force from the depth. These magma when comes out to the surface then they are considered as lava.
The felsic lava are those in which the amount of silica and aluminium is very high. Due to this high silica content, the viscosity is high. The amount of silica present in magma or lava is directly proportional to the viscosity of magma or lava. The felsic lava due to its high viscosity flows sluggishly.
Whereas, the basic lava are those in which the silica content is significantly less. Iron (Fe) and Magnesium (Mg) is mostly present in this type of lava. As a result of which it flows easily without any difficulty.
This is the reason why felsic magma (lava) are more viscous compared to the mafic magma (lava).
Answer:
Option (C)
Explanation:
Coquina is usually defined as a sedimentary limestone rock that is found to be present in the freshwater zones and in the coastal areas. This rock is made up of broken shells that are smaller in size. The rocks can be easily broken down by the constant flowing of sea waves.
This rock is commonly formed in the same way as the other sedimentary rocks, i.e. it is formed by the deposition of sediments carrying these organic remains and eventually undergoes the process of compaction and lithification on the seafloor.
Thus, the correct answer is option (C).
Water covers 71 percent of the earth’s surface!
The plane would reach a latitude of 38°N.
When it comes to lines of latitude, the Equator is 0°. Locations south of the equator increase from 0° as you go further South and those north increase from 0° as you go North.
If you therefore go from 17°S northward, the degrees of latitude will keep decreasing till you get to 0° and then start increasing as you go North.
The new location in this case will therefore be North:
= 55 - 17
= 38 °N
In conclusion, the plane will keep going North until it passes the Equator at 0° then it will keep going North till it gets to 38°N.
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