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Lera25 [3.4K]
3 years ago
11

Which best explains why this extrusive volcanic rock does not have visible crystals

Geography
2 answers:
r-ruslan [8.4K]3 years ago
4 0

The options are:

A. It is homogeneous and composed of a soft mineral.

B.  It does not contain atoms of any Earth minerals.

C.  It cooled down before large crystals could form.

D.  It wasn’t exposed to friction during its formation.

But the answer is

C.  It cooled down before large crystals could form.

I took the Plato test and this is what I learned and what most people seem to pick.

GalinKa [24]3 years ago
3 0
Extrusive volcanic rocks are formed on the surface of the earth and cool relatively quickly from lava erupted from a volcano. The rapid cooling of lava on the surface does not allow for visible crystals to form. The crystals are minute and most can only be seen under a microscope. Basalt is an example of an extrusive igneous rock.

Intrusive igneous rocks are formed when magma cools within the crust. This magma cools slowly and so crystals develop in these rocks. Granite is an intrusive igneous rock.
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What do scientists believe has caused global temperatures over the past 100 years to rise faster than ever before
wlad13 [49]
Global warming is what scientists conclude has caused the massive rise in temperature. Greenhouse gases are in the atmosphere, keeping heat trapped around Earth. The more these gases build up, the warmer or the more significant rise in temperature will take place. Greenhouse gases are released when we use fossil fuels, burn fires, etc. We are using more of these than ever, especially with the world's growing population. 

I hope this helps!
~kaikers
8 0
3 years ago
Does cold weather prevent minerals from forming?
sukhopar [10]

Answer: No

Explanation: Warm air temperature aids water evaporation, causing the crystals to grow more quickly. Crystals will still grow in cooler temperatures, but it will take much longer for the water to evaporate.

5 0
3 years ago
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.. What is the average rainfall in mm's for the following cities:
Andrei [34K]

The average annual precipitation in these cities are:

Vancouver - 1457 mm

Edmonton - 456

Regina - 390

Toronto - 831

Halifax - 1468

Explanation:

Canada is enormous country, and of course it has large differences when it comes to the precipitation levels across its territory. In general, the closer a region is to the sea, the more precipitation it tends to get, to further a region is in the interior, the lower the precipitation. The exceptions of these rules are the areas in the interior that are around the Great Lakes, and the far north.

The Great Lakes are several enormous lakes which create a lot of humidity in the air, so despite being in the interior, the amount of precipitation is relatively good. The northern part of the country, despite being surrounded by sea, has very low precipitation levels, with the main reason being the polar climate.

This patterns can easily be seen by the five cities on the list. Vancouver and Halifax are located on places that are heavily influenced by the sea, so they have high precipitation levels. Toronto is right next to the Great Lakes and it has medium precipitation levels. Regina and Edmonton are located in the interior, far away from the wet air masses, thus they have relatively low precipitation levels.

Learn more about types of precipitation brainly.com/question/869430

#learnwithBrainly

5 0
3 years ago
HURRY PLZ HELP.....The map below shows the routes of several famous conquistadors. Analyze the map and answer the questions belo
svet-max [94.6K]

Answer:

1. The purpose of the conquistadors was to conquer the ancient empires in the region of Central and South America. The first Spaniards who came to New World were the conquistadors, mercenaries, and soldiers who came for adventure as well as to make quick fortunes. The reason for the establish colonies in the New World was the glory, gold and God. Spanish invading the early empire and taking control over them by showing their glory, spreading Christianity became their reason for converting the Natives. Gold (silver) became their source for generating wealth in the New World.

2. The conquistadors were successful in colonizing Central America through invading the Maya Civilization. Mayan People were unable to defend themselves because of the spread of the diseases which killed somewhat the entire civilization who were not immune to it. Spanish weapons were superior to the Mayan who used bow and arrow, spears etc.

3. Hernan Cortes defeated the Aztecs in 1521 and claimed Mexico for Spain.

4. Central America countries speak Spanish because of the Spain occupation in the region by establishing colonies after the discovery of America in 1492.

                                                                   

6 0
4 years ago
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It is  b cold and dry air I hope it helps
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3 years ago
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