Which of these is a way that politicians in the united states attempt to influence the media

Describe the direct effects that volcanoes can have on the surrounding area.

-BARSIC- [3]

The effects of living next to/by a volcano can be very deadly. If the volcano were to erupt, lava would burn down everything and you would be left homeless and the city (if there was one would be destroyed. You would also have lots of ash. Might not have a lot of time to prepare to leave.

5 0

3 years ago

The first Europeans to explore Southern Africa were Spanish. true or false

denis23 [38]

False i think becuase Bartolomeu Dias is the person who explored it his name sounds like a spanish name iDk

8 0

3 years ago

Can someone pls help!!! this test is important!!

I am Lyosha [343]

Answer:

Mountain, Canyon, Delta

Explanation:

The uppermost box would be mountain.

The box below that one would be canyon.

And the farthermost box to the right would be delta.

If you thought about it, changing those circles to make them 3D is like stacking layers on top as they get smaller, this would form something that looks like a mountain.

Water typically runs through a canyon and the lines appear to be separating for the water.

Deltas are wetlands that form from rivers emptying their water into another body of water. If you were to look up an image of a delta that would make it easier to understand, it also looks like what the image provided is trying to demonstrate.

5 0

3 years ago

Which of the following would be an important observation that could help you identify a metamorphic rock? Choose one: A. large c

raketka [301]

Answer:

D. the arrangement of mineral grains into a foliation

Explanation:

Due to the tectonic activity of the terrestrial lithosphere, igneous and sedimentary rocks formed in certain environments and under precise environmental conditions, can be subjected to new conditions (essentially pressure and temperature). Under the new conditions, and frequently under the action of tectonic stresses (linked, for example, to the formation of mountain ranges), pre-existing rocks are transformed texturally, structurally and mineralogically into a solid state, giving rise to metamorphic rocks. Its fundamental characteristic is to present blastic texture (i.e., solid state recrystallization), and in cases of deformation, anisotropic factories.

The petrographic characteristics of these rocks are especially complicated, given the solid state transformation processes that they have suffered, usually accompanied by intense deformation. Due to the gradual nature of metamorphic (and deformational) transformations, the characteristics of this type of rock also range from igneous or sedimentary to purely metamorphic.

Foliation

The term foliation (foliatus: leaf-shaped) refers to any planar (almost flat) arrangement of mineral grains or structural features of the interior of a rock. Although there is foliation in some sedimentary rocks and even in a few types of igneous rocks, it is a fundamental characteristic of rocks that have undergone regional metamorphism, that is, rocky units that have folded and deformed greatly. In metamorphic environments, foliation is caused, ultimately, by the compressive efforts that shorten the rock masses, causing the mineral grains of pre-existing rocks to develop parallel or almost parallel alignments. Examples of foliation are the parallel alignment of minerals with planar habit and / or elongated minerals; the parallel alignment of mineral particles and flattened edges; the compositional bandeado where the separation of dark and light minerals generates a laminar appearance, and the blackboard when the rocks easily separate into thin and tabular layers along parallel surfaces. These different types of foliation can be formed in many different ways, such as:

1. Rotation of elongated or planar mineral grains towards a new orientation.

2. Recrystallization of minerals to form new grains that grow in the direction of the preferred orientation.

3. Changes in shape in equidimensional grains to elongated shapes that align in a preferred orientation.

3 0

3 years ago

Mid-ocean ridges (MORs), which are the sites of new oceanic crust formation, are linear mountain chains that run along divergent

Lemur [1.5K]

The correct answer is - As the hot magma exists the MOR, it shoots up higher than the surrounding crust.

The mid-ocean ridges are linear mountain chains on the ocean floor. They appear on places where there are divergent boundaries, meaning where two or more plates are moving away from one another.

As the plates move away, they leave thinner crust and gaps behind them, so the high pressure from the mantle manages to push upward the magma with ease. As the magma pushes upward it manages to move up the ocean floor as well. The magma cools of very quickly, thus creating new crust in no time. This new crust sits higher than the older one because the magma manages to push upward the ocean floor itself. Since the magma is continuously coming up and creates more and more new crust, it also gets out much higher because it makes a mountain of very hard igneous rocks around the source, thus constantly coming above the layers formed before.

7 0

3 years ago