Answer:
Hilly flanks theory
Explanation:
HILLY FLANKS THEORY is the theory proposed by Robert Braidwood, arguing that agriculture arose in areas where the wild ancestors of domesticated wheat and barley grew, and resulted from human efforts to increase the productivity and stability of their food base.
He proposed and suggest in 1948, that agriculture began in the hilly flanks of the Taurus and Zagros mountains, where the climate was not drier, as Childe had believed, and that fertile land supported a variety of plants and animals amenable to domestication.
Based on what you learn about Jovian moons by watching the videos or reading the textbook, what types of evidence for recent or ongoing geological activity have been observed on one or more jovian moons?
Answer:
They have an active layer of volcanic crater, and have presence of the tidal heatings.
Explanation:
All the Jovian planets are considered as the gas giants and they have thick ice layers of rocks and these layers have lower temperatures than rocks and allow for the icy volcanism and tectonic activity at lower temperatures. Given the presence of the active crater on the LO, the moon has 400 plus volcanoes, along with more than 100 mountains. Europa has a young creator and tectonic young surface and subsurface oceans within 100 metes of depth. Callisto is heavily created mass of crater and has a thin atmosphere, with icy rocks.Jovian moons such as Io, Europa, and Enceladus show evidence of ongoing geological activity. This activity is often driven by the moons' gravitational interactions with Jupiter and Saturn, resulting in internal heating that fuels geological processes.
Explanation:Evidence for recent or ongoing geological activity on Jovian moons includes visible surface changes and unusual energy sources. Jupiter's moon Io, is a prime example, showcasing active volcanism facilitated by the internal heat generated by the moon's gravitational interaction with Jupiter, resulting in constant flexing and heating of its interior. Another significant example is Europa, also a moon of Jupiter, where the lack of impact craters implies a geologically young surface, while the observable cracks and ridges suggest continuous geological activity. Furthermore, Galileo's observations indicate the presence of a massive, sub-surface liquid water ocean on Europa. Lastly, Enceladus, a moon of Saturn, also displays geological activity likely influenced by Saturn's gravitational forces, similar to the tidal heating observed on Io and Europa.
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A crystal of potassium feldspar (KAlSi3O8) will produce a variety of weathering products after it is weathered. Which of the following is NOT a product that results from the weathering of potassium feldspar?
A) silica.
B) potassium ions.
C) clay minerals.
D) iron oxides.
Iron oxides are NOT a product of potassium feldspar weathering. Potassium feldspar weathers to form clay minerals, silica, and potassium ions, but not iron oxides, which are associated with the weathering of iron-containing minerals.
Explanation:The question asks which of the following is NOT a product that results from the weathering of potassium feldspar (KAlSi3O8): A) silica, B) potassium ions, C) clay minerals, D) iron oxides. The answer is D) iron oxides. When potassium feldspar is weathered, it reacts with water and carbon dioxide, resulting in the formation of clay minerals, potassium ions in solution, and silica, mostly in the form of H4SiO4. Iron oxides are not a direct weathering product of potassium feldspar but can be formed under specific conditions from other minerals or in different weathering processes.
Laurent's minerals like kaolinite are formed as a result of potassium feldspar weathering, alongside the release of potassium ions and silica in solution. The process, known as hydrolysis, fundamentally alters the mineral's structure into new forms, facilitating the creation of clay minerals from the silicate material originally present in feldspar. However, iron oxides, typically associated with the weathering of minerals containing iron, are not a result of weathering potassium feldspar, which lacks iron in its composition.
Studies of deep-sea sediment cores have contributed greatly to scientific knowledge of ________. the origin of oscillation ripple marks in deep-sea muds how soft-bodied organisms are carbonized the biological impacts of pollution on parts of the continental shelves climatic changes during the last four million years.
Answer:
climatic changes during the last four million years
Before (and during) inflation, there was adequate time for the observable universe to homogenize itself and come to the same temperature. This characteristic of the inflation model resolved the
Answer:
The answer is the expansion of the Universe
Explanation:
Because the inflationary Universe refers to a brief period of accelerating expansion in the very early Universe.
Radar is capable of measuring how much precipitation is falling in a given location from as much as several hundred kilometers' distance away.
T?
F?
Answer: True.
Explanation: A type of radar called the weather radar is used in the observation and forecasting of the weather of various locations at a time.
Weather radars can measure the temperature, precipitation and wind of a location from thousands of kilometers away with ease. Also weather radars can be used to predict the weather of a place for coming days in a location.
The major biological source of dissolved oxygen in the ocean comes from
Answer:
There are two sources of dissolve oxygen into water: the atmosphere as well as from the water plants.
Explanation:
There are two sources of dissolve oxygen into water: the atmosphere as well as from the water plants. Phytoplankton or any submerged plants are the main source of oxygen in a pond. These phytoplankton produce oxygen by process called as photosynthesis in the presence of solar energy and emit this oxygen into the pond
This dissolved oxygen originates from various places. a biological source containing organisms capable of photosynthesis, which produces oxygen as a byproduct.
Phytoplankton and photosynthetic bacteria like cyanobacteria make up a large majority of these creatures. The atmosphere and water plants are the two places where oxygen may dissolve into water. The primary source of oxygen in a pond is phytoplankton or any submerged vegetation.
In the presence of solar light, these phytoplankton make oxygen through a process called photosynthesis, and they release this oxygen into the pond.
Therefore, phytoplanktons are the major source of dissolved oxygen.
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One measure for the value of the patch was given by the long-term contribution of a fragment to colonization events in the network. How do the properties of a landscape and the properties of a species affect the value of a patch? The value of the fragment depends ________.
_____ The value of the fragment depends on the properties of the landscape and the properties of the species
What is the most important reason why an icy moon is more likely to be geologically active than a rocky moon of the same size? What is the most important reason why an icy moon is more likely to be geologically active than a rocky moon of the same size? Ice contains more radioactive elements than rock. Ice is less rigid than rock. Ice is affected by tidal forces to a greater extent than rock. Ice is less dense than rock. Ice has a lower melting point than rock.
The icy moon is more likely to be geologically active than a rocky moon of the same size because Ice has a lower melting point than rock. The correct option is E.
Why are some moons geologically active?It is crucial to emphasize that geological activity on moons is not only frequent but also the foundation of contemporary space exploration. Tidal forces frequently contribute to the moon's geological activity, which coincides with heat. Friction is produced by tides, and friction produces heat.
Ice allows for ice volcanism and tectonics at shockingly low temperatures since it deforms and melts at considerably lower temperatures than rock. The Moon has a stable, rocky surface that has been impacted by asteroids, meteors, and comets, leaving craters and pits in it.
Thus, the ideal selection is option E.
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Icy moons are more likely to be geologically active than rocky moons of the same size mainly because ice has a lower melting point than rock, which, combined with tidal forces from a parent planet, can lead to significant geological activity.
Explanation:The most important reason why an icy moon is more likely to be geologically active than a rocky moon of the same size is because ice has a lower melting point than rock. This allows the icy moon to more easily undergo melting and refreezing, which can facilitate tectonic activity like the shifting of surface plates similar to Earth's geological processes. Moreover, the flexibility of ice compared to rock contributes to this activity. In addition, icy moons, such as Jupiter's moon Europa, are subjected to tidal forces from their parent planet, which can flex and heat their interiors, driving geological activity. This is the case with Europa and also Saturn's moon Enceladus, which experience tidal heating due to the immense gravitational pull of their respective planets.
The key to identifying a black hole candidate in a binary system is that a. one of the two stars cannot be seen. b. the unseen star is a contact binary. c. the visible companion must be an evolving main sequence or giant star. d. the system must be a very strong source of radio emissions.
The discharge of a river traveling through a temperate region will typically ________ downstream; the discharge of a river traveling through an arid region will typically ________ downstream.
a. increase; increase
b. decrease; decrease
c. increase; decrease
d. decrease; increase
Answer:
c.
Explanation:
temperate regions have abundant precipitation rates.
Arid (desert) regions lack water and have low precipitation rates.
The discharge of a river traveling through a temperate region will typically increase downstream; the discharge of a river traveling through an arid region will typically decrease downstream.
Explanation:The correct answer is c. increase; decrease.
In a temperate region, rivers will typically have a higher discharge downstream. This is because temperate regions receive more rainfall, which leads to an increase in the volume of water flowing in the river. In contrast, in an arid region, there is less rainfall, resulting in a decrease in the discharge of the river downstream.
For example, the Mississippi River in the United States travels through a temperate region and has a large discharge as it flows downstream. On the other hand, the Nile River in Egypt travels through an arid region and has a smaller discharge as it flows downstream.
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PLZ HURRY IT'S URGENT!!
What has been the impact of declining harvests and years of drought on African subsistence farmers?
A. Subsistence farmers refuse to change their traditional ways and do anything different from their forefathers.
B. Subsistence farmers continued to plant crops such as maize to make sure they can feed their family.
C. Subsistence farmers have begun to plant some drought resistant crops and break away from their traditional crops.
D. Subsistence farmers have turned to nomadic pastoralism in search of profits.
Answer:
c
Explanation:
Answer:
C. Subsistence farmers have begun to plant some drought resistant crops and break away from their traditional crops.
What concept states that "ancient life forms succeeded each other in a definite, evolutionary pattern and the contained assemblage of fossils can determine the geologic age of the strata"?
Answer:
The correct answer is Principle of Faunal Succession.
Explanation:
This principle states that fossil remains occur over time and that this can be predicted.
This is established by observing that there are remains of fossilized fauna and flora found in sedimentary rocks, and they are found in all these rocks in any place, no matter where they are.
Then, analyzing this it is possible to determine the age of the rocks and strata found, depending on the flora and fauna that are fossilized on them, by determining when the sediments that conform to the rock were deposited.
Thanks to the study of flora and fauna, the entire age of the Earth can practically be studied since they are widely distributed throughout the planet throughout history.
And so you can study the climate throughout the life of the planet, the groups of plants and animals and the age of the rocks.
Which five national parks are closest to california border with nevada
Answer:
Explanation:
The closest national parks are the following:
10. Devils Postpile National Monument
5. Sequoia and Kings Canyon National Park
2. Death Valley National Park
1. Yosemite National Park
7. Lassen Volcanic National Park
The five national parks closest to the California-Nevada border are Death Valley National Park, Joshua Tree National Park, Yosemite National Park, Sequoia and Kings Canyon National Parks, and Lassen Volcanic National Park.
The five national parks closest to the California border with Nevada are:
Death Valley National Park (DVNP) - This park straddles the California-Nevada border.
Joshua Tree National Park (JTNP) - Located in southeastern California, it is relatively close to the Nevada border.
Yosemite National Park - In central California, it's further north but still accessible from Nevada.
Sequoia and Kings Canyon National Parks - These adjacent parks in the southern Sierra Nevada are also a drive away from the Nevada border.
Lassen Volcanic National Park - It's in northeastern California, although further from the Nevada border than the others listed.
Note: While this provides a general guide, exact proximity may vary depending on specific border crossing points and road accessibility. The significant areas of wilderness and parklands like Mojave Desert National Preserve and Anza-Borrego Desert State Park are additional large preserved areas, although not all classified as national parks.
Which of the following borders is NOT found dividing two countries' territory?
a. Physical borders
b. Antecedent borders
c. Relic borders
d. Superimposed borders
e. Geometric borders
Answer:
Relic Border
Explanation:
A physical border is a naturally occurring barrier between two areas
(rivers, mountain ranges, oceans, and deserts)
An antecedent border is a boundary that already existed before the present settlement in that area occurred (the 49th parallel separating the US and Canada)
A relic border is a boundary that has ceased to function but can still be detected on the cultural landscape. It no longer exists as an international boundary (the Berlin Wall separating East and West Berlin)
A superimposed border is a boundary impose on an area by a conquering or colonizing power that ignores existing cultural landscapes (the division of African countries by the British)
A geometric border is a boundaries drawn based on a grid
system (line of latitude or longitude)
During a non-El Niño year, trade winds blow from the normally high-pressure area over the eastern Pacific (near Central and South America) to the normally stable low-pressure area over the western Pacific (north of Australia).
a) true
b) false
Answer: a) true
Explanation:
Groundwater in underground, constricted fractures is heated past its normal boiling temperature by surrounding hot rocks. The superhot liquid expands in volume; this reduces its confining pressure, and it flashes into steam. This is an explanation of which geologic feature?
Choose one:
A. a geyser
B. a hot spring
C. a mud pot
D. an artesian spring
Answer:
answer a: a geyser
Explanation:
The superhot liquid expands in volume; this reduces its confining pressure, and it flashes into steam. This is an explanation of a geyser geologic feature. Thus, option A is correct.
What is a Groundwater?Water that is found in soil, geological, and especially rock formation fissures below the earth's crust is known as groundwater. This is generally treated as the water that will be viable for drinking the water.
Similar to how marine depth affects pressure, encircling pressure rises as distance increase. The immense load of the granite and water above the pool stops the pool from melting due to the increased pressure of geyser.
Because of the nearby hot rocks, the groundwater in underground, confined breaches is heated above its normal point of boiling. Therefore, option A is the correct option.
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What is a drainage divide?A) A ridge or strip of high ground separating one drainage basin from another.B) The arrangement of a stream and its tributaries.C) The total area drained by a stream and its tributaries.D) The area where a stream flows into a lake or ocean.
Answer:
A) A ridge or strip of high ground separating one drainage basin from another
Explanation:
A drainage divide is an area with an increase in height of the land or elevated terrain which seperates neighbouring drainage basins. This may be in a form of a single range of hills or mountains
What mountain range is between the black and caspian seas
Answer:
Caucasus Mountain Range or Caucasus Mountains is between the black and caspian seas.
Explanation:
This mountain is a great barrier that extends for 750 miles and its tops exceed 4500 meters. It is located between the Black Sea and the Caspian Sea.
It has two mountain ranges: the Great Caucasus, which is the largest mountain range and extends for 1200 km, and the Lesser Caucasus which is 600 km long.
This great mountain range was created by the clash between the Arab plate and the Eurasian plate approximately 28 million years ago. Due to the constant movement of plates, it is a region prone to continuous strong earthquakes although it does not have volcanic activity despite the existence of some stratovolcanoes.
A benefit of geothermal energy over hydroelectric energy when generating electricity is that geothermal energy _______.
A. does not cause flooding
B. is available in any location
C. requires a specific locale
D. does not require any water
E. never releases dangerous gases
Answer:
A. Does not cause flooding
Explanation:
Hydroelectric energy requires damming a watercourse(stream or river) in order to store up water used to generate energy. Sometimes, during high peak of rainfall, these dams might overflow leading to flooding in the area.
This is not the case for geothermal energy as the energy is derived from heated water sourced from underneath the surface of the earth. There are no issues of flood with geothermal energy.
Jupiter and Saturn, despite being considerably farther from us than the inner terrestrial planets,are very bright in our sky.Which of the following choices are possible explanations for this?
Choose one or more:
A. They are more reflective (higher albedo) than most of the terrestrial planets.
B. They are so hot that they emit blackbody radiation that peaks in the visible.
C. They are larger than the terrestrial planets.
D. Dust obscures our view of the inner planets more than the outer ones
E. Since they are closer to stars, more starlight is reflected off of them than the inner planets.
Answer:
The good answers here are:
A. They are more reflective (higher albedo) than most of the terrestrial planets.
C. They are larger than the terrestrial planets.
Explanation:
Light colored clouds found there have a better, reflective albedo. And both planets are so much bigger than Earth, they´re the biggest planets of our solar system. These are some factors of their brightness in our sky.
The ________ is the idea or concept that ancient life forms succeeded each other in a definite, evolutionary pattern and that the contained assemblage of fossils can determine geologic ages of strata.
Answer:
Principle of faunal succession
Explanation:
Principle of faunal succession -
According to this theory , the layer of the sedimentary rocks have fossils of the flora and fauna .
Which helps to study the rocks regarding the ages and the types of specifies found at that time .
It is the best method to study about the ancient lives , which helps by determining the relative age of the rocks .
Even the law of superposition is used to determine the time and age of the sedimentary rocks .
Biostratigraphy is the concept that fossil assemblages can determine the ages of sedimentary rock strata, aiding in the mapping of life's evolutionary history.
Explanation:The biostratigraphy principle is the idea or concept that ancient life forms succeeded each other in a definite, evolutionary pattern and that the contained assemblage of fossils can determine geologic ages of strata. Biostratigraphy is a branch of stratigraphy which utilizes fossils to correlate successions of sedimentary rocks, thereby determining their relative age. It relies on index fossils, which are fossils of species that survived for a relatively short time, but were widespread and can be used to match isolated rocks to determine their age.
Strata are layers of sedimentary rocks that can be differentiated by their different colors or compositions. With strata forming relatively horizontal, parallel layers, the younger ones are typically on top. Paleontologists utilize stratigraphy to map out the way life evolved across geologic time, although working out specific fossil ages can be challenging.
Which internal struggle, a dialectic within a relationship, embodies the conflicting desires for integration and separation? A. Inclusion-seclusion B. Expression-privacy C. Predictability-novelty D. Connection-autonomy
Answer:
Inclusion-seclusion
Explanation:
The connection–autonomy dialectic is where we want to be close to others but also seek to be autonomous; it is an internal struggle. The inclusion–seclusion dialectic is the external struggle between integration and separation.
.Laos has a land area about the same as Great Britain but only four million in population, where many are members of hill tribes ensconced in the virtually inaccessible mountain valleys of the north.
The statement is true.
Explanation:
Laos is country in Southeast Asia. It is a country that has approximately the same size as Great Britain, but the population size is only around 4 million people, or some 16 times less than Great Britain. There are many factors that have contributed to such low population in this country, such:
large scale povertyhigh death rates among infantsshort life expectancycorruptionlack of basic means for livingvery low level of healthcareLaos is one of the poorest countries countries in the world. Not just that, but the country is ranked around the bottom in pretty much all parameters. The people live in terrible conditions, and while the birthrates are relatively high, the death rates are high as well, so the population is not growing. The landscape and climate of the country don't help this as well, with the majority of the country being covered by tropical rainforest, intersected with lot of waterways, and having lot of steep areas.
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The thickness of ocean sediments that are close to a mid-ocean ridge is __________ the thickness of ocean sediments that are far from mid-ocean ridges.
A. more than,
B. less than
C.same as
Answer:
The answer is letter B, less than.
Explanation:
The thickness of ocean sediments that are close to a mid-ocean ridge is _less than_________ the thickness of ocean sediments that are far from mid-ocean ridges
Mt. Vesuvius erupted in a very violent explosion in 79 C.E. and buried the residents of Pompeii in ash. On the basis of this information, which of the following would you LEAST expect to find at Vesuvius?
A. basaltic lava
B. lapilli (cinders)
C. rhyolite lava
D. ignimbrite
Answer:
The good answer is:
A. Basaltic lava.
Explanation:
The eruption ocurred in 79 AD. You can´t expect to see lava anymore on the site of the tragedy. When it happened, you may have seen rivers of lava descending from the volcano, but not today.
The apparent brightness of a star remains constant at most time, except that at precise intervals of 173 hours, the star becomes dimmer for about 2 hours. The most likely explanation is that the star is __.
Answer:
The most likely explanation is that the star is a member of an eclipsing binary star system.
Explanation:
An eclipsing binary star system takes place when two stars which are close to each other move in an orbit in which sometimes, one star can hide the light behind the other.
There are two types of eclipses depending on the orientation of the orbit and the size of the stars: the totals or the annular ones. It may also be the case that the eclipses are partial.
Algol is the best known eclipsing binary star, and the first of this kind to be discovered. Its interval between eclipses is 173 hours (2.9 days).
When this type of eclipses happens, the brightest star provides 92% of the light of the system, while the eclipsed only contributes less than 8%, and there is a third star, which is not eclipsed.
Therefore, if there is any star that has been bright most of the time, and during certain time intervals it becomes dimmer, that star is being overshadowed.
The Columbia Plateau in Washington and Oregon is ________. a. a caldera filled with rhyolite lava flow.b. a thick stack of welded-tuff layers c. a flood basalt plateaud. a field of large stratovolcanoes
Answer:
b. a thick stack of welded-tuff layers
Explanation:
The Columbia Plateau is a flood basalt plateau formed by extensive basaltic lava flows which created a large, flat expanse of igneous rock across southeastern Washington, the correct answer is c.
Explanation:This region was covered by a vast flood basalt of approximately 170,000 cubic kilometers, known as the Columbia River basalts. These flows originated from volcanic activity and inundated large parts of southeastern Washington, eastern Oregon, and southern Idaho.
Unlike stratovolcanoes, which are typically cone-shaped and formed by layers of lava and ash, the Columbia Plateau was formed by eruptions that released massive amounts of fluid basaltic lava, spreading out to form a large, level expanse of igneous rock.
Mass movement______________. A. is more likely to happen under dry conditions than under wet conditions.B. can't happen underwater because the buoyancy force of water is too great.C. happens only when the slope of a hill gets steeper than the angle of repose.D. is a gravity-driven downslope movement of natural materials.
Answer:
D. is a gravity-driven downslope movement of natural materials.
Explanation:
The mass wasting is defined as the slope movement or the downward movement of the debris or the rock wastes down the hill by the action of the geomorphic process like the soil, the sand and the regolith and may be continuous or discontinuous associated with the flow of the debris, mud and the rock slide or the flow. Based on the rock these are classified as Creep: which is long term movement and is a combination of the soil or the rocks, the steeper the slopes the faster is the fall. Landslides are associated with landslips and thus are more rapid and hence cause more destruction as the flow of material occurs along with the action of the gravity. They also include lahar and the earth flows.During a solar eclipse, the Moon is positioned directly between Earth and the Sun. Find the magnitude of the net gravitational force acting on the Moon during the solar eclipse due to both Earth and the Sun.
Answer:
[tex]F_{resultant} = 2.373\times 10^{20}\ N[/tex]
Solution:
As per the question:
We know that:
Mass of the moon, [tex]M_{m} = 7.36\times 10^{22}\ kg[/tex]
Mass of the Earth, [tex]M_{e} = 5.98\times 10^{24}\ kg[/tex]
Mass of the sun, [tex]M_{s} = 1.99\times 10^{30}\ kg[/tex]
Mean distance between the Earth and the sun, R = [tex]1.5\times 10^{11}\ m[/tex]
Mean distance between the Earth and the moon, R' = [tex]3.84\times 10^{8}\ m[/tex]
Now,
We know that the gravitational force is given by:
[tex]F = \frac{GMm}{r^{2}}[/tex]
Thus
Gravitational force between the Earth and the Moon:
[tex]F_{em} = \frac{6.67\times 10^{- 11}\times 5.98\times 10^{30}\times 7.36\times 10^{22}}{(3.84\times 10^{8})^{2}}[/tex]
[tex]F_{em} = 1.9908\times 10^{20}\ N[/tex]
The above force is towards the earth:
The force of gravitation between the sun and moon:
[tex]F_{sm} = \frac{6.67\times 10^{- 11}\times 1.99\times 10^{30}\times 7.36\times 10^{22}}{(1.5\times 10^{11} - 3.84\times 10^{8})^{2}}[/tex]
[tex]F_{sm} = 4.364\times 10^{20}\ N[/tex]
Thus net force is given by:
[tex]F_{resultant} = F_{sm} - F_{em} = 4.364\times 10^{20} - 1.9908\times 10^{20} = 2.373\times 10^{20}\ N[/tex]
The resultant force is directed towards the sun.
Xenoliths are associated most closely with which magnetic process and igneous rock body?
a. Columnar jointing; lava flow
b. Intrusion; Granitic Batholith
c. Vesiculation; Pumice Lump
d. Magmatic Differentiation; Gabbro Sill
Answer:
b. Intrusion; Granitic Batholith
Explanation:
Xenoliths are a rocky fragment that becomes developed in large bodies of the rocks and thus as a result of the solidification process, they are described as the inclusions of the igneous rocks when the release of the magma and they thus occur along with the magma chambers. As they are non-uniform and they are also found on the meteoroids and contain two types of gabbro that are formed by different pressure and temperatures. They provide information about the upper mantle.