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.
Mass extinctions have occurred five times in Earth's history. The end Permian and Cretaceous extinctions were responsible for removing a large percentage of organisms from the planet. How do these extinctions contribute to the biodiversity we see today?
Answer: Extinctions greatly shape the biodiversity we see.
Explanation:
Mass Extinctions occurs when some massive climatic and natural conditions wipes away a certain specie of living organism.
Mass extinction is believed to be the reason why many animals can't be seen on Earth today, animals such as: dinosaurs, mammoth, Tasmanian tiger, West African Black Rhinoceros, dodo have all gone extinct.
Therefore Extinctions greatly shape the biodiversity we see today, and humans are saddled with the responsibility of preserving our current biodiversity we have.
Why do magmas rise toward Earth's surface? Magmas are mainly liquid and contain dissolved fluids such as water; most are less dense than the adjacent solid rock. Most magmas are richer in silica than most crustal and upper mantle rocks. Magmas are more viscous than solid rocks in the crust and upper mantle. all of the above
Answer:
Magmas are mainly liquid and contain dissolved fluids such as water, most are less dense than the adjacent solid rock and so move upward.
Explanation:
Magma -
It is a semi solid particle and the igneous rocks are formed from magma .
Magma is basically found inside the surface of the Earth and may come out from Volcanoes , due to any tectonic movements .
The composition of magma is basically molten form of rock along with gas bubbles and some crystals .
The magma is very dense in nature and slightly viscous and hence can flow , being semi - solid in nature .
Magmas rise toward Earth's surface due to their liquid state, lower density than the surrounding rock, higher silica content, and greater viscosity compared to solid rocks in the crust and upper mantle.
Explanation:Magmas rise toward Earth's surface for several reasons:
Magmas are mainly liquid and contain dissolved fluids such as water, and most of them are less dense than the surrounding solid rock, allowing them to rise.Magmas are often richer in silica compared to crustal and upper mantle rocks.Magmas are more viscous than solid rocks in the crust and upper mantle.These factors combined make it easier for magmas to ascend towards the Earth's surface.
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1. Mexico is geographically located in the __________.
2. Today there are people of Mexican descent in the ________.
3. The languages spoken in Mexico are _________ and ________.
4. The Empire dominated Mexico from the fourteenth to the _________ centuries. 5. Frida Kahlo, the artist's wife, is known for her __________.
Answer:
The answers are: PLATEAU REGION, MEXICO CITY, SPANISH AND INDIGENEOUS LANGUAGES, AZTEC AND 16TH, PAINTINGS.
Explanation:
1. Mexico is geographically located in the ___plateau region_______.
2. Today there are people of Mexican descent in the ___Mexico City_____.
3. The languages spoken in Mexico are __spanish_______ and _____indigenous languages___.
4. The Empire AZTEC dominated Mexico from the fourteenth to the __16TH_______ centuries.
5. Frida Kahlo, the artist's wife, is known for her ____paintings______.
Using the map of present-day oceanic plateaus and other submerged crustal fragments below, determine which feature is most likely to be accreted onto a continent. Use the information on the map above to guide you with regards to active margins.
The feature that is most likely to be accreted onto a continent is the Galapagos Rise.
This layer consists of plant residue atop the soil surface. On a forest floor, it may be leaves and twigs. In a field, it may be crop residue left after harvest. A) This layer forms the base geologic material in a particular location; it is sometimes called bedrock. B) This layer loses minerals and organic matter to the layer beneath it. C) This layer accumulates minerals and organic matter leached from upper soil layers. D) This layer consists of organic matter, humus, and inorganic minerals. E) It facilitates plant rooting, has high nutrient content, and holds water.
Answer:
D
Explanation:
The humus layer is found above the uppermost soil layer and consists mostly of organic matter that is in various stages of decomposition. The organic matter is mostly from plants but can also come from animals. In addition to the organic matter, there are also non-compacted inorganic minerals present. Underneath the humus layer, the topsoil begins and is the first official soil layer.
In geology, the term "transform fault potential" denotes the extent to which one tectonic plate could be moved along a major transform fault line, such as California’s San Andreas, by an instantaneous strain release, commonly known as an earthquake.
(A) the extent to which one tectonic plate could be moved
(B) the extent to which one tectonic plate could move
(C) the extent that one tectonic plate could be moved
(D) the extent of one tectonic plate moving
(E) the extent of the movement of one tectonic plate
Answer:
(A) the extent to which one tectonic plate could be moved
Explanation:
The transform fault is a zone where the two plates slide past one another and thus the result in the displacement of the large landmass. Due to the presence of the earthquakes and the formation of thin valleys and the splitting of the river beds such as in the San Andreas fault. And the transform fault potential is the potential that the tectonic plates can e be moved to the extent that the earthquakes can occur. The transform fault is found in the oceanic basin and is offset by the mid-oceanic ridges. Thus they form an interactive zone of the dextral zone of the plate movements.Two, small, poorly drained lakes lie close to each other in a northern forest. The basins of both lakes are composed of the same geologic substratum. One lake is surrounded by a dense Sphagnum mat; the other is not. Compared to the pond with Sphagnum, the pond lacking the moss mat should have:
A) lower numbers of bacteria.
B) less-acidic water.
C) reduced oxygen content.
D) reduced rates of decomposition.
Answer:
The correct answer is C)
Explanation: The lake with no Sphagnum mat has less disolved oxygen. The moss is a plant which generates and liberates oxygen as part of its metabolism. The oxygen disolves into the whater of the lake which has this Sphagnum mat, giving it a higher concentration of disolved oxygen than the other one.
Near the shore, waves of transition begin to "feel bottom" and, as a result, the orbits of the water molecules in the wave become more __________. This process eventually causes __________ to form.
a. elliptical; swells
b. circular; breakers
c. circular; swells
d. elliptical; breakers
Near the shore, waves of transition begin to "feel bottom" and, as a result, the orbits of the water molecules in the wave become more elliptical. This process eventually causes breakers to form. Thus the correct option is D.
What are waves of transition?Waves that travel in liquid at depths larger than a twentieth of the wavelength but less than half the length are known as transitional waves. It denotes a more condensed set of Transition-related tasks that must be carried out or done.
The waves are refracted as they begin to "feel bottom," change in wavelength, and speed as they travel diagonally toward the shore. As where the wave crest hits shallow water, the wave bends in this direction.
Therefore, option D is elliptical; breakers are appropriate.
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Use the drop-down menus to answer each question. Which scale has 12 levels of intensity? Which scale is most useful for earthquakes of all sizes and distances? Which scale is good for small nearby earthquakes but not as useful for larger or distant ones? Which scale takes into account the movement of rocks along fault lines? Which scale rates earthquakes based on the amount of damage they cause?
Answer:
1. mercalli scale
2.moment magnitude scale
3.Richter scale
4.moment magnitude scale
5.Mercalli scale
Which of the following is NOT an example of possibilism?a.The movement of people between regions promotes the spread of culture.b.People who live in dry, mountainous terrain develop sophisticated irrigation systems.c.People living in an arctic environment use snowmobiles to navigate the terrain.d.Fishing is an important source of food for people who live near the ocean.e.People who live in hot, wet climates grow crops that thrive in these conditions.
Answer:a.The movement of people between regions promotes the spread of culture.
Explanation: Possibilism is the idea that thought the physical environment can affect human actions, people have the ability to adapt to their environment.
Possibilism is a concept in geography and the statement 'The movement of people between regions promotes the spread of culture' is not an example of possibilism; rather, it is an example of cultural diffusion.
Explanation:Possibilism is a geographic concept that explains that the environment sets certain constraints or limitations, but culture is determined by the actions of humans, which can be independent of the environment. This differs from environmental determinism, where the environment is seen as the dominant influence on culture.
From the examples given, the one that is NOT an example of possibilism is 'The movement of people between regions promotes the spread of culture.' This is simply a statement about cultural diffusion, not about how humans adapt to specific environmental conditions.
The other options, such as 'People who live in dry, mountainous terrain develop sophisticated irrigation systems', 'People living in an arctic environment use snowmobiles to navigate the terrain', 'Fishing is an important source of food for people who live near the ocean', and 'People who live in hot, wet climates grow crops that thrive in these conditions' are all examples of possibilism; they reflect how humans adapt to and operate within different environmental conditions.
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What is one result of the tectonic activity between the nazca plate and the south american plate
Answer:
The formation of the Andes Mountain Range.
Explanation:
They are the result of the subduction of the Nazca plate under the South American plate. They were formed at the end of the Cretacic period, during the Mesozoic era.
The Andes Mountain range forms a continuous highland for over 7000 km, and goes through 7 countries, making them the largest continental mountain range in the world.
In which of the following regions would you expect to find river biomes with HIGH levels of oxygen in the water? fast-moving, clear-water rivers in the Rockies slow-moving, muddy rivers in the Amazon fast-moving, muddy rivers in the Amazon slow-moving, clear-water rivers in the Rockies
Answer:
clear-water rivers in the Rockies
Explanation:
A prism- or wedge-shaped, structurally complex zone of faults, folds, and mostly metamorphosed rocks that form along the upper parts of a subduction zone where sedimentary material and oceanic crust are scraped off the downgoing slab is called a(n):_____________.
Answer:
Accretionary prism
Explanation:
An accretionary prism or accretionary wedge is a mass of sedimentary material that is scraped off the descending slab at the boundary of a convergent plate
The sediments are pushed into thick vertical piles, where the pressure expels water from the sediments and converts them into rocks.
Which of the following factors could explain a gradual warming trend in a planet's climate?
A) a decreasing albedo.
B) a decrease in the amount of greenhouse gases.
C) a decrease in the brightness of the Sun.
D) a major volcanic eruption that increases the albedo of the planet by making clouds.
E) none of the above.
Answer: I think the correct answer is E) none of the above.
Explanation:
A gradual warming trend in a planet's climate can be explained by a decreasing albedo, which means the planet is absorbing more solar radiation due to a reduction in surfaces that can reflect sunlight.
The question asks which among the given options could explain a gradual warming trend in a planet's climate. The correct answer is A) a decreasing albedo. Albedo refers to a surface's ability to reflect sunlight. A decrease in albedo means that a planet is absorbing more solar radiation, leading to a warming trend. This can occur through natural changes such as the melting of ice caps or human activities like urbanization that replace reflective surfaces with darker, heat-absorbing materials. Unlike the cooling effects of aerosols from volcanic eruptions, as mentioned in option A, a decreasing albedo contributes to warming. In contrast, a decrease in greenhouse gases or the brightness of the Sun would lead to cooling, not warming.
The fact that most moons always show the same face to their planet is____________.
A) very surprising and a great mystery.
B) a natural consequence of the fact that the entire solar nebula rotated in the same direction.
C) explained by the law of conservation of angular momentum.
D) a natural consequence of tidal forces acting on the moons.
E) a result of the fact that the moons once had atmospheres.
Answer: I think D) a natural consequence of tidal forces acting on the moons is. is the right answer
Explanation: The moon is tidally locked to the Earth.
The fact that most moons always show the same face to their planet is a natural consequence of tidal forces acting on the moons. Thus, option D is correct.
What is a planet ?Large, circular celestial objects that are neither stars nor their remnants are known as planets. The solar nebula explanation, which states that because an interplanetary cloud compresses from a nebula to create a newborn protoplanetary disc revolved around the earth by such a planetary system.
There are various tidal waves that are present across the solar system. This makes them title force which creates an effect that moon is present everywhere. No no this makes believe that due to natural consequences the moon and the title forces are present everywhere.
Therefore, option D is the correct option.
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Often crops are associated with regions other than the one in which they were developed. For example, the "Irish" or "Idaho" potato originated in the Andean Highlands. Corn of the American "Corn Belt" originated in _____a) West Africa.b) the Fertile Crescent.c) Central America.d) Southeast Asia.
Corn of the American "Corn Belt" originated in Central America.
The Corn Belt is a region of the Midwestern United States that, since the 1850s, has dominated corn production in the United States. More generally, the concept of the "Corn Belt" connotes the area of the Midwest dominated by farming and agriculture
Why do many deserts exist at 30° north and south latitudes?a. The temperature is much higher at these latitudes; therefore, moisture evaporates much more quickly. b. Horizontal mountain ranges exist just above these latitudes, resulting in large rain shadows. c. At this latitude, cold air falls downward and becomes warmer, which means it can hold more moisture. d. This is a low pressure zone where air ascends, taking the moisture with it. e. These latitudes receive more solar energy than most other latitudes, making them much warmer and dryer than other areas.
Answer:
the answer is e
Explanation:
The deserts exist at 30° north and south latitudes because these latitudes receive more solar energy than most other latitudes, making them much warmer and dryer than other areas. Thus, the correct answer is option E.
What are latitudes?Latitude is a coordinate in geography that specifies the north-south position of a point on the Earth's surface or another celestial body. Latitude is expressed as an angle ranging from 90° at the south pole to 90° at the north pole, with the Equator at 0°. Parallels, or lines of constant latitude, run east-west as circles parallel to the equator.
The majority of the world's deserts are found between 30 degrees north and 30 degrees south latitude, where heated equatorial air begins to descend. The descending air is dense and warms up, evaporating a large amount of water from the land surface. As a result, the climate is extremely dry.
Therefore, the warm and dry climate at 30° north and south latitude leads to the formation of desert.
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You have just bought your dream home along a coastline, but you notice that the beach in front of your new house is slowly disappearing. You decide to solve this by building a groin. Winds blow predominantly from east to west, so where do you place your groin? Group of answer choices
Answer:
The groin should be built perpendicular to the shore, and to the west of your house.
Explanation:
The groin will prevent beach erosion over time. And will help to stabilize the beach, if built correctly.
The winds will speed up the longshore drift process, and that is why the groin must be built to the west, to trap the sand and sediments before its washed away.
A beach groin is expected to last for about 40 to 50 years, so the problem would be solved for at least your entire generation.
Which of the following is false concerning the development of dead zones in coastal waters, for example, the dead zone in the Gulf of Mexico?
A. Higher levels of nutrients entering streams and ultimately the oceans lead to overproduction of algae and cyanobacteria.
B. When alive, the algae and cyanobacteria photosynthesize and produce oxygen but only during the daylight hours.
C. High concentrations of algae and cyanobacteria require oxygen to survive during the dark hours of the day, leading to depletion of oxygen levels.
D. When they die, algae and cyanobacteria sink to the bottom of the coastal zones where heterotrophic aerobic bacteria feed on them and deplete the water of oxygen.
E. Dead zones in coastal waters of the oceans have been a common occurrence for many thousands of years.
Answer:
E
Explanation:
Occurrence of dead zones in coastal waters not common.
Answer: option E is correct
Explanation:
Nutrients from human activities that are channeled using pipes into water bodies are the main cause of dead zone due to industrialization which is not up to a thousand years so option E is false about dead zone.
Hui ____.
a. are Chinese-speaking Muslims who are concentrated in the provinces of Gansu, Ningxia, and Yunnan.
b. is the Chinese term for the thousands of South Asian guest workers who come to China each year in search of better economic opportunities.
c. is a type of wet rice cultivation that is practiced in the valleys of Japan.
d. is the Chinese equivalent of the Japanese belief system Shinto.
e. is the capital city of North Korea.
Answer: Hui are Chinese-speaking Muslims who are concentrated in the provinces of Gansu, Ningxia, and Yunnan.
Explanation: The Hui people of China is a tribe of people from the North Western zone of the country in the Region of Zhongyuan in China. The tribe is majorly made of Chinese Muslims, though other religions are practiced by the tribe.
The Hui people are found in most areas of China.
All but one of the following properties of Uranus's rings makes them different from the rings of Saturn. Which property is the same for both planets?A) They are very narrowB) They are widely spacedC) They are very thinD) They are very dark
Answer:
D) They are very dark
Explanation:
The outermost ring of the planet Uranus turns out to have a bright blue color making it only the second blue ring to be found in the solar system. The first circles the planet Saturn. Both the colour of these rings are associated with small moons which could be as a result of subtle forces acting on dust. The outer ring of Saturn is blue and has [the moon] Enceledus in its brightest spot. Urans on the other hand has its blue ring right on top of [the moon] Mab's orbit
Divergent boundaries are not one, smooth ridge of separation. Instead, they are broken into a series of segments, with different segments of fault offset from others. What features allow for the offset of divergent boundaries?
Divergent boundaries feature transform faults that allow for offset, creating a series of segments. Movement along these faults can cause earthquakes along divergent boundaries.
Explanation:Divergent boundaries are places where lithospheric plates move away from each other, leading to the creation of new oceanic crust. Within divergent boundaries, there are transform faults that allow for the offset of segments, resulting in a series of straight-line segments resembling a zipper on the seafloor.
Offset of divergent boundaries occurs due to the movement along transform faults, perpendicular to the ridge. These faults are responsible for creating earthquakes in the regions of offset.
You are getting ready to go for a hike on a summer day. You check the barograph and discover that the pressure tendency has been rising for several hours. Based on this information, what gear should you be sure to pack for your hike?
a) snowshoes
b) sunscreen
c) a rain jacket
d) a helmet
Answer:
b) sunscreen
Explanation:
Most important for understanding atmospheric pressure is knowledge of the variations it is subjected to under the influence of various factors.
When we have an atmospheric pressure higher than 1013 Mb or hPa (high pressure or anticyclone) it is why the air is heavier, coming down colder and drier and gives us a good clue to say we can have a good time and / or cold.
The centers of high atmospheric pressure generate divergent air movement out of the center and also subsident (top to bottom) causing the air to become drier. High pressure plays the opposite role of low pressure: it dries the air, decreases cloudiness and conditions for rain.
The first confirmed detections of extrasolar planets occurred in ____________.
a. 2009
b. the mid-20th century
c. the 1990s
d. the mid-17th century
Answer: c. the 1990s
Explanation: The exact date was January 9, 1992.
The first detection of extrasolar planets, or planets outside our solar system, was in the 1990s. The first such discovery was made in 1992.
Explanation:The first confirmed detections of extrasolar planets (planets outside of our solar system) occurred in the 1990s. This marked a major breakthrough in the field of astronomy, as it expanded our understanding of the universe beyond our own solar system. The first successful detection was made in 1992 when astronomers Aleksander Wolszczan and Dale Frail discovered two extrasolar planets orbiting the pulsar PSR 1257+12.
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This is the name of the area that is made up- among other countries- albania
Answer:
Southeast Europe or The Balkans
Explanation:
Albania is on of the countries that makes up the region known as Southeast Europe. It's neighboring countries of Greece, Macedonia, Kosovo, and Montenegro are also form part of this region.
More specifically, Albania is considered to be a Balkan nation. This implies not only geographical location, but also culture and political ties with the other states of the region.
What is the importance of the epipelagic zone to the ocean food web?
Answer:
It is the zone in which photosynthesis occurs.
Explanation:
The Epipelagic is the uppermost of the oceanic zones and is crucial to the ocean food chain because it is here that photosynthesis can occur thanks to the presence of sunlight.
Phytoplankton live and grow in this zone and are an essential food source for countless marine animals, including whales. Many forms of marine life not only in the Epipelagic but below in the Mesopelagic zone, depend on phytoplankton.
The darker zones underneath the Epipelagic are characterized by having much lower biodiversity since the lack of sunlight and combination of high pressures and cold temperatures makes them more inhospitable.
The epipelagic zone is crucial to the oceanic food web due to its support of photosynthesis, which enables plankton to thrive and form the base of the food chain. This sustains diverse marine life, including many economically important fish species.
The epipelagic zone is the uppermost part of the ocean and is critical to the ocean food web. Light penetration in this zone, which extends to about 200 meters below sea level, is sufficient for photosynthesis, which is the fundamental process that drives the production of organic material in the marine ecosystem. This area contains a high concentration of organisms, both plankton, which are the foundational producers in the ocean food chain, and nekton, the more mobile animals that feed on the plankton and each other.
As the primary productive zone, the epipelagic supports a diverse range of life and ecosystems, enabling plankton to flourish and serve as the base of the food chain for larger species such as fish, mammals, and birds. Ocean currents contribute to thermal stratification within this zone, mixing warm and cold waters, which affects nutrient distribution and availability. Moreover, the epipelagic zone's role is critical to the survival of many marine species, influences global climate patterns, and supports human economies through fisheries and tourism.
Which of the following is a desert most likely to have? Choose one: A. high transpiration rates B. a location at latitude 60° N C. a location at latitude 30° N or S D. low evaporation rates
Answer:
It will be C. a location at a latitude of 30 degrees north or south.
According to Milutin Milanković, which of the following are a contributing factor to ice-age cycles? Choose one: A. increased amounts of volcanic ash B. variations in the shape of the Earth's orbit C. variations in ocean temperature D. sunspot cycles
Answer:
not sure, but most likely answer b: variation's in the shape earth's orbit
Explanation:
Answer:
B. variations in the shape of the Earth's orbit
Explanation:
Ice age cycles according to Milutin Milanković who was a Serbian geophysicist and climatologist can be defined as the glacial and interglacial cycles or periods which occurs due to the unsteady movement of the Earth in its orbit. This unsteady movement resulted in a change in way solar energy was been distributed on the surface of the Earth.
The ice age cycles are referred
to as Milutin Milanković cycles. The ice age cycles according to Milutin Milanković has two cycles, the shorter cycle is for an average of 100,000 years while the longer cycle is for an average of 413,000 years.
These ice age cycles are important because they have an effect on the Earth's climate. Such effects include
a. The way ice is been formed on the earth.
b. The distribution of solar energy from the sun or the amount of sunlight exposure to the regions on the earth.
One of the factors contributing to the ice age cycles is the variations in the
shape of the Earth's orbit.
he low and high tides experienced on Earth are the result of __________.
wind waves
internal waves
tidal bulges
tsunami
Answer:
Low tides and high tides experienced on Earth are the result of tidal bulges.
Tidal bulges created by gravitational forces of Moon and Sun interacting with Earth's rotation cause low and high tides.
The low and high tides experienced on Earth are the result of tidal bulges caused by the gravitational forces of the Moon and the Sun interacting with Earth's rotation. These tidal bulges result in the rise and fall of sea levels creating the phenomenon of tideas
1. Fossils on continents that are now separated by ________ support the theory of continental drift.
2. Continents closer to the equator have warmer climates, yet fossils of ______________ have been found on islands near the North Pole. This supports the idea that islands drifted from the equator.
3. Coalfields in ____________ match those found in North America, supporting the theory of continental drift.
Answer:
Oceans, tropical species, europe
Explanation:
The continental drift theory put forward by the Alfred Wegner stare that the continental land got separate by the drifting of the plates that the oceans mas as they were close together in the form of a supercontinent, and are now separated by the large ocean bodies like that of the Jigsaw fit. The tropical species that were found in the equatorial belt s are now found in the island that is near to the place the dominance of the movement of the tectonic forces and the flight to poles explained in his theory. The coalfields that found in North America are similar to that of the European landmass that got separated and drifts away. Thus the S shape of the atlantic oceans is characteristic of this.Fossils on continents that are now separated by oceans support the theory of continental drift.
Continents closer to the equator have warmer climates, yet fossils of tropical species have been found on islands near the North Pole.
Coalfields in Europe match those found in North America, supporting the theory of continental drift.
What does Continental Drift show ?The theory of continental drift states that the continents were once joined together in a single landmass, called Pangaea. Over time, Pangaea broke apart and the continents drifted to their current positions.
The fossils of tropical plants and animals on islands near the North Pole provide evidence that these islands were once located closer to the equator. This is because these plants and animals could not have survived in the colder climate of the North Pole.
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