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BlackZzzverrR [31]
2 years ago
15

ROCKS AND MINERALS

Geography
1 answer:
vodomira [7]2 years ago
7 0

Geologists have recently determined that the minerals goethite and hematite exist in abundance on Mars, sure signs of the presence of water (see Figure 1 for a picture). None of those geologists have been to Mars, of course, but the unmanned rovers Spirit and Opportunity have. These rovers are equipped with three mass spectrometers, each of which is capable of determining the chemical composition of a solid with a high degree of accuracy. With such a precise chemical analysis in hand, geologists on Earth had no problem identifying the minerals.

A mineral is defined in part by a specific chemical composition. In theory, therefore, it is always easy to identify a mineral, if you can determine the chemical composition with a mass spectrometer like the Mars rovers. In reality, however, even if you are looking at rocks on Earth, determining the exact chemical composition of a substance involves significant time preparing the sample and sophisticated laboratory equipment (and often significant money). Luckily, it is usually unnecessary to go to such lengths, because there are much easier ways that require little more than a magnifying lens and a penknife.

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What is going on with the natural world around you?
Kamila [148]

Answer:

Explanation:

Last year we had the most handsome of ducks -- a mallard. He was with us until the end of June at which time the water on our property dried up. I have a feeling his mate got tired of sitting on the nest all the time and demanded he help.  They built their nest in a thicket that was impossible to get near. We knew about where it was, but it did us no good.

We did get to see the young ones once or twice. It is amazing how quickly they grow. By the end of September, they were all ready to go south -- even the young ones.

This year is very dry -- there's no water for them. So we have not seen the mallards or ducks of any kind and no geese either. We all miss them.

3 0
3 years ago
What can scientists learn from magnetic striping patterns? Select the three correct answers.(2 points)
kari74 [83]

Hello. This question is incomplete. The full question is:

What can scientists learn from magnetic striping patterns? Select the three correct answers.

1. the cause of magnetic pole reversals

2. the year the next magnetic reversal will take place

3. the location of ancient faults caused by seismic activity

4. the exact location of the next earthquake along the California coast

5. the direction plates are moving relative to each other

6. the speed of one plate as it subducts below another plate

Answer:

The direction plates are moving relative to each other

The speed of one plate as it subducts below another plate

The location of ancient faults caused by seismic activity

Explanation:

Magnetic striping patterns are very valuable systems for understanding the factors that promote polar variability of the ocean floor. This is because these systems are formed exactly by changes in this polarity, presenting lines (similar to a zebra), which allow scientists to interpret them and have valuable information about the movement of the direction plates towards each other, the speed that a plate reaches the subduz below another plate and the location and old faults that were caused by the existence of seismic activities.

6 0
3 years ago
If sun lost all its energy what would happen to earth and its inhabitants
Korvikt [17]
If you put a steamy cup if coffee in refrigerator, it wouldn't immediately turn cold. Likewise, if the sun simply turned off , the earth would stay warm - at least compared with the space surrounding it - for a few million years. But we surface dwellers would feel the chill much sooner than that.within a week, the average global surface temperature would drop below 0degree F. In a year, it would dip to -100degrees. The top layers of oceans would freeze over
Although some microorganisms living in the earths crust would survive, photosynthesis would halt immediately, and most plants would die in few weeks , and animals who eats plants would die off quickly
4 0
3 years ago
A most dominate element in the water cycle is the
bazaltina [42]

Answer:

sun and water

Explanation: is the answer

5 0
3 years ago
A small island in the open ocean is receiving swell coming from the southeast. Yet, waves break all around its shores, not just
denis-greek [22]

A) Refraction

B) Erosion

C) Reflection

D) Diffraction

E) Isostasy

Answer: B) Erosion

Explanation:

Erosion is a natural phenomena in which the top layer of soil or any other sedimentary material gets removed by the action of the physical agents like water, wind, and others.

According to the given situation, the waves will break the shores those which were facing the southeast. Thus the Island will get disturbed by the phenomena due to erosion.

   

4 0
2 years ago
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