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Firdavs [7]
3 years ago
7

You use highly accurate techniques to learn the time when lots and lots of different volcanic rocks solidified from melted rock.

You do this for many different rocks across the continents, and many different rocks across the sea floor. You will find that (note that "older" rocks are those that solidified more years ago, and "younger" rocks are those that solidified fewer years ago.):
Geography
1 answer:
Ket [755]3 years ago
4 0

Answer:

The sea-floor rocks are typically younger than the continental rocks, because sea-floor rocks are taken back into the mantle at subduction zones about as rapidly as new sea-floor rocks are produced, while continental rocks are not taken back into the mantle at subduction zones.

Explanation:

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Rate of subduction is one factor that distinguishes the three phases of the Cordilleran Orogeny True False
katrin2010 [14]

Answer:

True

Explanation:

The Cordilleras have one major factor that distinguishes them from the other mountain ranges, the three phases of its orogeny. Unlike most of the mountains in the world that have been created by a single orogenic process, that is not the case with the Cordilleras. There have been three consecutive orogenies, the Nevadan, Sevier, and  Laramide orogenic process that created the Cordilleras, thus making them a unique mountain range.

6 0
3 years ago
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After months of heavy rains, a farmer noticed a steady drop in crop production. Upon testing the farmland, it was found the soil
jonny [76]

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6 0
3 years ago
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Which statements describe Wegener’s ideas that became known as the theory of continental drift? Check all that apply.
yarga [219]

Answer:

Options (1), (2) and (3)

Explanation:

Alfred Wegener was the person who first invented the continental drift theory.  He observed that the continents move from one place to another with respect to a fixed point. He put forward many pieces of evidence but he was unable to explain the main mechanism that is responsible for these motion of continents.

The pieces of evidence that were given by Alfred Wegener supporting the continental drift theory are-

(a) The continents move slowly and continuously from one place to another and the edges of these continents perfectly match with the other.

(b) Similar fossil assemblages were found in currently separated continents.

(c) Similar rock types are also found and suggested that the continents were once all together forming a huge landmass which is known as the Pangaea.

Later this theory was modified into a more simple and universally accepted theory which is commonly known as the Plate tectonic theory.

Hence, the correct answers are options (1), (2) and (3).

8 0
3 years ago
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1. The lifting and removal of loose material by wind is called *blank*
Effectus [21]

1. Deflation

2. Loess

4. Kames, esker, drumline, and end moraines

i hope this help sry but i cant explain because i really don't how and i'm in a time test but they do go some answers on quizlet.

8 0
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AlladinOne [14]

Answer:

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<em><u>This is all due to the interaction of different factors, and not only because of the presence of UV. </u></em>

In Antarctica, the ozone levels become significantly reduced during spring because of these chemicals that contain chlorine, producing a hole where cool air becomes trapped. This air produces clouds that are responsible of the release of chlorine from the CFCs, an extremely important process of the formation of an ozone hole. The more clouds there are, the more gases are released, and the worse the ozone hole will be in spring.

Because the sun rises and becomes more intense during spring, it degrades these gases and releases the free radicals of chlorine, which are highly detrimental for the ozone layer as they destroy numerous molecules of ozone. By the beginning of summer, there is a higher amount of ozone that comes from other areas which help fill the ozone hole.

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