Answer:
Graph showing known historically active volcanoes, number of volcanoes reported to be active each year, and population. The line labeled "Known Historically Active Volcanoes" (right scale) is the cumulative number of volcanoes with an historically recorded eruption by that year. "Volcanoes Active Per Year" since 1400 CE (black line) and 10-year running mean of same data (thick red line) is also based on reported eruptions (those with uncertainty dates greater than 1 year are not included, nor are uncertain eruptions). "Population" (right scale) is the world's estimated human population; data from McEvedy and Jones (1978) and (since 1750) Population Reference Bureau, Washington, D.C. See text for further explanation.
A dramatic increase in both the number of historically active volcanoes and recorded eruptions took place about 1500 CE. These resulted in part from the great Spanish/Portuguese marine explorations – the Age of Discovery – around the end of the 15th century, when explorers opened Latin America and much of the western Pacific to European record-keeping. Perhaps equally important was the development and widespread distribution of the printing press in the late 15th century, markedly increasing the likelihood that new volcanological records would survive. Through the 17th and into the early 18th century the recognition of additional active volcanoes generally corresponded with steadily increasing eruption reports. By the 18th century global trade was flourishing, the Industrial Revolution was under way, and the heightened reporting of eruptions noticeably accelerated the discovery of new volcanoes. The list has continued to grow, with several important volcanic regions such as New Zealand, Alaska, and Hawaii being unrepresented until the last 250 years.
Explanation:
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Answer:
Concentration = 0.011 M
Explanation:
Molarity is given by dividing number of moles by volume in Liters
Molarity = moles/volume
But;
Number of moles = mass/molar mass
= 10 g/ 74.55 g/mole
= 0.134 moles
Therefore;
Molarity = 0.134 moles/12 L
= 0.011 M
The hypothesis or something that the experiment is about
Answer:
For a scientific hypothesis to be useful, it must be a
<u>testable</u> explanation of facts
Explanation:
In the scientific method, the hypothesis represents the starting point of all research, where the observation of a phenomenon is followed by a possible explanation that must be measured and proven.
It is important that the hypothesis presents defined, specific and real variables, and there must be the possibility of test it and have the necessary tools for this purpose.
Regarding other options:
<em> A. Provable
: the probability of a hypothesis implies that it may or may not be true.</em>
<em> B. Widely accepted
: the explanation that provides a hypothesis needs to be demonstrated through experiments in order to be accepted.</em>
<em> C. Correct: the hypothesis will not be correct until it has been tested.</em>
Answer: 1. Plucking
2.Moraine
3. Kettle lake
Plucking is a process of erosion in glacier in which rocks and sediments are displaced by the glacier to other locations. These rocks and sediments gets freeze at the bottom of the glacier.
A moraine is a sediment deposited by a glacier. This may be in a form of thick layer of sediment called as ground moraine or a small ridge of deposits called as end moraine.
A kettle lake is formed when ice in large extent gets melted and this results in formation of depression which is called as kettle. The kettle is filled by melted water forming a lake or kettle lake.
