Answer:
4.54 billion years old
Explanation:
do the sun refract when they enter the earth atmosphere
Answer:Sunlight refracts as it travels from the vacuum of space into Earth's atmosphere. As its wavefronts graze the upper atmosphere, light bends downward (Figure 4). This means we see the Sun higher in the sky than it actually is.
Explanation:
Some scientists think that Yellowstone could cause a future disaster because? A)the area is part of a caldera.B)scientists think that magma is still present at depth.C)past eruptions from Yellowstone carried ash over a huge area of western North America.D)land near Yellowstone is uplifting in some places and subsiding in others.E)All of these choices are correct
Answer:
E) All of these choices are correct.
Yellowstone is an active volcanic system located in the western United States and is capable of causing a future disaster due to several factors, including:
A) The area is part of a caldera: Yellowstone sits on top of a volcanic caldera, which is a large depression in the Earth's crust formed by a collapsed magma chamber. This caldera is a clear indication that the area has had significant volcanic activity in the past and could potentially experience future eruptions.
B) Scientists think that magma is still present at depth: While there is currently no active eruption at Yellowstone, scientists believe that there is still a significant amount of magma beneath the surface. This magma could potentially cause future eruptions or other volcanic activity.
C) Past eruptions from Yellowstone carried ash over a huge area of western North America: The most recent eruption at Yellowstone occurred approximately 640,000 years ago, and it was a massive event that covered a large area with ash and other volcanic materials. Future eruptions could potentially have similar effects, which could have serious consequences for people and wildlife in the surrounding area.
D) Land near Yellowstone is uplifting in some places and subsiding in others: The land around Yellowstone is constantly changing, with some areas experiencing uplift and others subsiding. This indicates ongoing geologic activity and could potentially lead to earthquakes, landslides, and other hazards.
Taken together, these factors highlight the potential for future disasters related to Yellowstone and the need for ongoing monitoring and research to better understand the risks and potential impacts.
Explanation:
Why is Mars considered to be a potentially habitable world?
a. We have evidence that liquid water existed on its surface in the past.
b. Robotic rovers have found evidence of microscopic organisms in the surface soil.
c. It is in our solar system, and all worlds in our solar system are potentially habitable.
d. It is about the same size as Earth.
Mars considered to be a potentially habitable world as we have evidence that liquid water existed on its surface in the past. Correct option is A.
Mars has water patterns that are the closest to those of Earth of any world in the solar system. Mars has signs of water channels resembling those on Earth today, as well as polar ice caps that increase and decrease with the seasons.
Numerous instances of deltas that developed in Martian waters have been discovered. A clear indication that Mars once had a lot of liquid water is the discovery of deltas. In order to form, deltas typically need deep water over a lengthy period of time. In order to prevent sediment from draining away, the water level must also be constant.
Mars is the most habitable world in our solar system after the Earth for a number of reasons: You can extract water from the earth. It isn't too cold or too hot. Gravity on Mars is 38% that of our Earth's, which is believed by many to be sufficient for the human body to adapt to.
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describe how small changes in earth’s orbit around the sun explain the pattern of glacial and interglacial periods over the past million years.
The Small changes in the earth orbit around the sun will leads to the pattern of the glacial and the interglacial periods as these changes will change the climate.
The Small changes in the Earth's orbit around the sun will specifically variations in its the eccentricity, the axial tilt, and the precession will cause the fluctuations in the amount of the solar radiation will received by the planet and the ultimately drive the patterns of the glacial and the interglacial periods.
The orbital variations will be occurring over the tens of the thousands of the years that will cause the cycles of the ice ages and the warmer periods that will be occurred over the past million years.
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On the grid below, draw a median line bar graph to illustrate the net migration rate for the six countries. Use a scale of one unit for every 2/1000 net migration
this is all the information given
Some useful information to show you how to draw a median line bar graph is given below:
How to create the median line bar graph?To create a median line bar graph for the net migration rate of the six countries, you would first need to create a vertical axis with a scale of one unit for every 2/1000 net migration. This means that each unit on the scale represents 2/1000 or 0.2% net migration rate.
Next, you would need to draw a horizontal line across the entire graph, representing the median net migration rate. The median is the middle value of the net migration rates when they are arranged in numerical order.
Finally, for each country, you would draw a vertical bar on the graph, with the height of the bar representing the country's net migration rate. The bars should be centered on the country name or label on the horizontal axis.
The bars should be colored differently for each country to make them easily distinguishable. You may also add a legend to indicate which color corresponds to which country.
Overall, the median line bar graph allows you to compare the net migration rates of different countries and see how they relate to the median net migration rate.
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which environment typically experiences the most extreme seasonal variation?A. Tropical forests
B. Open oceans
C. Boreal forests
D. Tide pools
Answer:
C. Boreal forests
Explanation:
C. Boreal forests typically experience the most extreme seasonal variation, with long, cold winters and short, mild summers.
the sun angle is at its highest here in central pa at what time on december 21?
In the Northern Hemisphere, including Central Pennsylvania, the sun angle is at its lowest on December 21, the winter solstice. Shorter days and longer nights are caused by the Earth's axis' tilt away from the sun.
However, it would depend on your precise location within the region if you were requesting the time of day on December 21 when the sun will be at its highest point (solar noon) in Central Pennsylvania. Solar noon usually occurs around 12:00 p.m. local standard time, but depending on your longitude within the time zone, it may vary slightly.
To determine the precise time of solar noon for your location, you can use an online solar calculator, such as the one offered by the U.S. Naval Observatory.
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During the Vernal Equinox what occurrence takes place that happens only twice a year?
During the Vernal Equinox, the Earth's axis is basically tilted neither towards the sun nor away from the sun which results in nearly an equal amount of daylight as well as darkness at all the latitudes.
There are two types of Equinoxes namely the Vernal and the Autumnal Equinox. There are two times of the year when the axis of the Earth is tilted neither towards the sun nor away from the sun which basically results in almost equal amount of daylight as well as darkness at all the latitudes and these are referred to as Equinoxes.
These almost equal hours of the day and night are basically due to the refraction of sunlight or we can say a bending of the light rays which causes the Sun to appear above the horizon when it is actually present below the horizon.
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A. Identify the political phenomena represented on the map.
The political phenomena which is represented on the map is known as gerrymandering which is intended to manipulate the boundaries of (an electoral constituency) so as to favour one party or class.
What is the political phenomena known as gerrymandering?Gerrymandering is the political manipulation of electoral district boundaries in representative democracies with the intent of creating an unfair advantage for a party, group, or socioeconomic class within the constituency.
The manipulation may include "cracking" (diluting the voting power of the opposing party's supporters across many districts) or "packing," which involves concentrating the opposing party's voting power in one district in order to reduce their voting power in other districts. It is also used to safeguard incumbents. According to Wayne Dawkins, politicians choose their voters rather than voters choosing their politicians.
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what is the relationship between the mediterranean sea and the atlantic ocean?
The Strait of Gibraltar, a confined waterway situated between Spain and Morocco, connects the Atlantic Ocean with the Mediterranean Sea, two separate bodies of water.
The Strait of Gibraltar, which connects the Mediterranean Sea to the Atlantic Ocean as the only natural route, is only around 14 km (8.7 miles) wide at its narrowest point.
The Atlantic Ocean is one of the world's major oceans, encompassing over 20% of the Earth's area, whereas the Mediterranean Sea is a nearly landlocked sea bounded by Europe, Asia, and Africa.
Maintaining the circulation of water in the world's oceans depends on the interchange of water between the Mediterranean Sea and the Atlantic Ocean.
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Sort the following characteristics by the type of volcano they are associated with. 1) pillow basalt 2) lahars 3) strombolian eruption 4) pyroclastic flow
Strombolian eruptions are observed in cinder cone volcanoes, pillow basalt are seen in shield volcanoes and pyroclastic flows and lahars are found in stratovolcanoes.
A cinder cone or a scoria cone is basically a steep conical hill which is made up of loose pyroclastic fragments which include the volcanic clinkers, volcanic ash, or the scoria which has been basically built around a volcanic vent. Strombolian eruptions are characteristics of these volcanoes.
Shield volcanoes are large, broad and shield like volcanoes which are characterized by the pillow basalt lava and stratovolcanoes or the composite volcanoes are triangular in shape and are characterized by the pyroclastic flow and lahars.
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When the Moon is directly opposite the Sun in the sky, its phase is: A) new. B) waxing or waning crescent. C) first or third quarter. D) waxing or waning gibbous. E) full.
Answer:
E) full
Explanation:
it is rising opposite the Sun
On the map of asia, the star is marking which physical feature of eastern asia? map question 6 options: the himalayas the gobi desert three gorges dam the altav mountains
The star on the map of Asia is marking the Himalayas, which is a mountain range spanning most of the northern and eastern parts of the continent.
What is mountain?Mountain is a large landform that rises above the surrounding terrain in a limited area. Its size is usually defined by its height, which is measured in meters or feet above sea level. Mountains are formed by the movement of tectonic plates and the uplift of land by volcanic activity. They are often found in chains or ranges, forming a distinct topography that can range from gentle hills to towering peaks. Mountains are home to diverse ecosystems and provide essential resources for humans, including fresh water, minerals, and recreational opportunities. Mountains also provide a sense of awe, inspiring exploration, reflection, and a connection to nature.
It is the highest mountain range in the world, with peaks reaching over 8,000 meters (26,000 feet) in elevation. It stretches from the Indus River in Pakistan to the Brahmaputra River in India and Tibet.
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Why is dew point a better measure of atmospheric moisture than RH?
It gives a more accurate measurement of moisture in the air
The dew point is basically considered a better measure of atmospheric moisture than RH because it gives a more accurate measurement of the moisture which is present in the air as compared to RH.
The dew point can be basically defined as the temperature at which the air must be cooled in order to get saturated with water vapor, at constant air pressure as well as the water content.
Compared to RH or the relative humidity, the dew point is considered as a more accurate way in order to measure the humidity, since it is an absolute measurement as it contains absolute values and are therefore more concrete unlike the RH whose values are more of a ratio.
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true or false that the Elk River Wildlife Management Area is West Virginia's oldest wildlife management area, purchased in 1938.
The given statement "The Elk River Wildlife Management Area is West Virginia's oldest wildlife management area, purchased in 1938." is true because this is a wildlife management area which was bought in the year 1938 and protects the land which is present along the Holly river and Elk river which is upstream of Sutton Lake.
The Elk River Wildlife Area is about 104-acre and was designated as a wildlife area by the Fish and Game Commission in the year 1991. It has both coastal salt marsh as well as the riparian wetlands. A large number of mammals can be spotted in this area.
Elk River Wildlife Management Area is located east of Sutton in the Braxton County, West Virginia. It happens to protect the lands along the Holly River as well as the Elk River present upstream of Sutton Lake. It was purchased in 1938 and is West Virginia's oldest wildlife management area.
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in which countries did a powerful earthquake happen resulting in a death toll of 4300 lives?
A powerful earthquake resulting in a death toll of 4300 lives happened in two countries: Haiti and Mexico.
An earthquake is a natural disaster that occurs when the earth's crust shakes, often caused by the movement of tectonic plates. The strength of an earthquake is measured using a seismometer and reported on the Richter scale. In this case, the earthquake was powerful enough to cause significant damage and loss of life in two countries: Haiti and Mexico. The death toll refers to the number of people who lost their lives as a result of the earthquake. Recovery efforts in the aftermath of an earthquake often involve search and rescue operations, medical assistance, and rebuilding infrastructure to help affected communities recover from the disaster.
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You are at the Tropic of Capricorn. You are sailing to the Arctic Circle. How many degrees latitude will you need to sail?
1. 90 degrees
2. 66.5 degrees
3. 180 degrees
4. 23.5 degrees
The circle of latitude that contains the subsolar point at the December (or southern) solstice is known as the Tropic of Capricorn (or the Southern Tropic). As a result,
it is the furthest southern latitude at which the Sun can be viewed straight overhead. During the June Solstice, it likewise dips to 90 degrees below the horizon at solar midnight. The Tropic of Cancer is its northern analog.
One of the five main circles of latitude identified on maps of the planet is the Tropic of Capricorn. Its latitude is currently 23.43628° (or 23°26′10.6′′)[1] south of the equator, however it is slowly advancing north at a pace of 0.47 arcseconds, or 15 meters, every year at the moment.
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In the water cycle, all water eventually returns to _____ because of gravity. a. the sea. b. groundwater. c. lakes. d. atmosphere as vapor. e. rivers.
Answer:
b uwu
Explanation:
ok shut
What major feature is found on land at a convergent plate boundary?
Magmatic/volcanic arc
Rift valley
Fracture zone
Trench
The major feature found on land at a convergent plate boundary is a magmatic/volcanic arc. When two tectonic plates converge, the denser oceanic plate is subducted beneath the less dense continental plate. As the oceanic plate descends into the mantle, it begins to melt, producing magma.
A trench is also commonly found at a convergent plate boundary where the oceanic plate is subducted beneath the continental plate. However, trenches are located in the ocean rather than on land. A rift valley is a feature found at divergent plate boundaries, where two plates move away from each other, and a fracture zone is a feature found at transform plate boundaries, where two plates slide past each other.
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What are the signs of global developmental delay?
Answer
Typical symptoms of GDD include:
The child is late in sitting up, crawling, walking
Limited reasoning or conceptual abilities
Fine/gross motor difficulties
Poor social skills/judgment
Aggressive behavior as a coping skill
Communication problems
Explanation:
what is causing a decline in antarctica’s chinstrap penguins?
The impact of each of these factors can vary depending on the specific location and population of penguins, and researchers are still working to better understand the complex interactions that influence the health and well-being of these animals.
The warming of the Antarctic Peninsula has led to the melting of sea ice, which chinstrap penguins rely on for nesting and feeding. As a result, penguins are forced to travel further to find food and suitable nesting areas, which can impact their survival and reproductive success.
Overfishing in the Southern Ocean has reduced the availability of krill, which is the main food source for chinstrap penguins. This has led to increased competition for food among penguin populations, and can further impact their survival and reproductive success.
Chinstrap penguins are vulnerable to depredation by birds of prey and other predators, which can impact their survival and reproductive success.
Outbreaks of avian diseases, such as avian cholera, have been known to impact penguin populations in Antarctica, and can contribute to declines in their numbers.
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Which of the following is the PRIMARY reason for
the rapid population growth in megacities across
the developing world?
the natural increase rate
a decrease in the doubling time
interregional migration
a decline in the death rate
the decline in the dependency ratio
Population momentum and time that doubles. Population momentum is the amount of time that passes without the pace of natural rise or decline having an impact on population growth.
Why is it called population mean?
Population momentum and time-doubling. Population momentum is the lag time before the rate of natural rise or reduction has an impact on population growth.
A population mean is the average calculated from the entire group, distribution, or population. It is calculated by dividing the sum of all population variables by the total number of variables in the population. The population mean is shown here as. X is the total number of obseravtions in the population.
Why is India's population growing? India's enormous population is mostly due to its youthful population: About half of India's population, or 650 million people, are under 25.
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How do prevailing winds affect ocean currents?
Prevailing winds affect ocean currents by driving the movement of surface water in the ocean.
When surface water moves in response to winds, it can create a domino effect that causes deeper water to move as well. This movement of water can be caused by a variety of factors, such as differences in water temperature or salinity.In addition to driving the movement of water, prevailing winds can also affect the upwelling and downwelling of water in the ocean.Upwelling occurs when winds blow surface water away from a coastline, allowing deeper, nutrient-rich water to rise to the surface. This can support the growth of phytoplankton and other marine organisms.Downwelling, on the other hand, occurs when surface water sinks and is replaced by deeper water. This can occur when winds blow surface water towards a coastline or when surface water becomes denser due to changes in temperature or salinity.
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Sort the following characteristics by the type of volcano they are associated with.1) pillow basalt2) lahars3) strombolian eruption4) pyroclastic flow5) flank eruptions6) fire fountain7) felsic lave
Pillow basalt submarine volcanoes ,Lahars stratovolcanoes, Strombolian stratovolcanoes ,Pyroclastic flow stratovolcanoes, Flank eruptions shield volcanoes Fire fountain shield volcanoes, Felsic lava stratovolcanoes
Pillow basalt - Associated with submarine volcanoes or seamounts that erupt lava under water, creating bulbous formations resembling pillows.Lahars - Associated with stratovolcanoes that erupt explosively and produce pyroclastic material, which can mix with water to form dangerous mudflows known as lahars.Strombolian eruption - Associated with stratovolcanoes that erupt relatively small amounts of lava and explosive material in a relatively regular, rhythmic pattern.Pyroclastic flow - Associated with stratovolcanoes that erupt explosively, producing clouds of ash, rock, and gas that can travel down the slope of the volcano at high speeds.Flank eruptions - Associated with shield volcanoes, which are broad, gently sloping volcanoes that erupt effusively, producing large volumes of relatively fluid lava that spreads out over a wide area.Fire fountain - Associated with shield volcanoes, which can produce fire fountains during an eruption, where lava is blasted into the air in a spectacular display.Felsic lava - Associated with stratovolcanoes that erupt lava with a high viscosity, resulting in lava that is thicker and more explosive than mafic lava.
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A lava tube forms because the lava in the ________ part of the flow remains fluid, while the exposed surface ________ and hardens.A) Interiorer; Cool OffB) Inner; Warm UpC) Outer; Cools OffD) Outer; Warm Up
Option C: A lava tube develops as a result of the lava in the flow's outer region staying fluid as the exposed surface cools off and solidifies.
A lava tube is a naturally occurring passageway created by lava that flows beneath the lava flow's hardened surface.
The outermost layer of the lava cools and hardens as it flows downhill because it is exposed to the colder air, generating a solid crust or shell. The lava inside the flow, however, is still hot and fluid, allowing it to continue flowing downward.
The hollow, cylindrical structure that results from the cooling and solidification of the flowing, fluid lava can be any size, from tiny tunnels to enormous caves.
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what is the general area for the plantar surface?
The general area is the bottom of the foot that makes contact with the ground during walking or standing and is referred to as the plantar surface or sole.
The forefoot, midfoot, and hindfoot are the three sections that make up the foot, which stretches from the toes to the heel. The metatarsal and phalangeal bones, which make up the toes, are located in the forefoot. The tarsal bones are part of the midfoot, which also serves to maintain the foot arch.
The talus bone, which joins the foot to the leg, and the heel bone, or calcaneus, are located in the hindfoot. The thick, hard skin that covers the plantar surface of the foot aids to shield it from harm and provides traction when walking or standing.
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Sapphire-simpson and beaufort scales of tropical cyclone eloise
Answer: Early on 23 January, Eloise peaked as a Category 2-equivalent tropical cyclone on the Saffir–Simpson scale as the center of the storm began to move ashore on Mozambique. Shortly afterward, Eloise made landfall just north of Beira, Mozambique, before rapidly weakening.
Explanation:
what is a steep cliff or slope between a higher and lower land surface?
Answer:
Escarpment
Explanation:
where are the oldest rocks on the atlantic seafloor located?
Answer:
The oldest parts of the oceanic crust are found farest from the mid ocean ridges at subduction zones and continental shelves.Which one(s) of these has, or have, a spreading growth habit?
A. Perennial ryegrass
B. All of these turfgrasses
C. Tall fescue
D. Kentucky bluegrass
E. None of these turfgrasses
A spreading growth habit in turfgrasses refers to their ability to spread horizontally and form a dense, interconnected turf. Based on this definition, the turfgrasses that have a spreading growth habit are: Tall fescue and Kentucky bluegrass. Therefore the correct option is option are C and D.
In turfgrass, the term "spreading growth habit" refers to the ability of the grass to spread and create a dense turf through aboveground stems or belowground rhizomes and stolons. Grasses with a spreading growth habit have the ability to recover quickly from damage and to fill in bare spots in the lawn. This type of growth habit is desirable for sports fields, parks, and home lawns.
Examples of turfgrass species with a spreading growth habit include Bermuda grass, zoysia grass, and some types of fescue grass.
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