why do the hydrogen lines in a star appear weak in both the hottest and the coolest stars?
In spectroscopy, the hydrogen lines appear weak in both the hottest and coolest stars because hydrogen atoms are completely ionized.
In the hottest stars, the high temperatures cause the hydrogen atoms to lose their electrons, resulting in a lack of hydrogen lines. In the coldest stars, the limited mass and low core temperature prevent sufficient hydrogen ionization, leading to weak hydrogen lines.
To summarize, the hydrogen lines are weak in both the hottest and coolest stars due to different reasons. In the hottest stars, hydrogen atoms are completely ionized, and in the coldest stars, the limited mass and low core temperature result in insufficient hydrogen ionization.
To know more about spectroscopy click here:
https://brainly.com/question/26925389
#SPJ11
define Environmental perception in your own words
Answer:
Environmental perception is awareness of, or feelings about, the environment.
Explanation:
it might not sound like my own words but im the kind of person that talks in big words.
which of the following came first? 1. writing 2. iron weapon 3. the neolithic revolution 4. the first cities
Answer:
Neolithic Revolution
Explanation:
Writing (Cuneiform script / 3200 B.C.)
Iron Weapon (aprox. 3000 B.C.)
Neolithic Revolution (Started around 10,000 B.C.)
The first cities (Mesopotamian cities / around 7500 BC)
Which of these list of vocabulary words is in the correct order of occurrence
the particles in a sand dune deposit are small and very well sorted and have surface pits that give them a frosted appearance this deposit most likely was transported by
The particles in a sand dune deposit are small and very well sorted and have surface pits that give them a frosted appearance this deposit most likely was transported by wind.
Sand grains are categorized as sedimentary grains that are carried from one place to another by natural factors such as wind and water. These sedimentary grains are formed by the erosion of rocks through the physical weathering process.
Erosion is defined as the decomposition and transportation of rock to far-off distances.
In general, sand dune deposit is a collection of small sized-sand particles that are transported and deposited by wind and ultimately accumulated to form a ridge or mound of sand under the force of gravity.
If you need to learn more about sand dunes click here:
https://brainly.com/question/9750637
#SPJ4
astrology falls into the category of pseudoscience because it does not rely on the scientific method. astrologers do not collect the data __________ the accuracy of the predictions they make.
Astrologers do not collect the data to test the accuracy of the predictions they make.
How does Astrologers make predictionsWhile astrology uses some astronomical and mathematical principles, it is not considered a science because its claims are not testable, and its methods have not been subjected to rigorous scientific investigation.
The predictions made by astrologers are often based on subjective interpretations of the positions of celestial objects and are not supported by empirical evidence. Therefore, astrology is generally considered a pseudoscience.
Learn more about pseudoscience at:
https://brainly.com/question/30394061
#SPJ1
Design your own desert plant. Include it’s name and at least 4 adaptions.
(please could you describe what it would look like because i have to draw it)
Answer:
Phinstous. AKA Desert Eury.
Thick vine makes it hard to destroy(animals or humans).
Uses it to eat animals for food and water.
It is usually low to the ground so that it doesn't get too hot.
Needs little of water and food to survive.
What it looks like:
Mouth on the top
a very thick vine
low
mostly green
the rock around the bottom
Earthquakes can be induced in relatively stable areas, away from plate boundaries due to?
Earthquakes can indeed occur in relatively stable areas away from plate boundaries. These earthquakes are known as induced earthquakes and are typically caused by human activities rather than natural tectonic processes. Some common causes of induced earthquakes include:
1. Fluid Injection: Injecting large volumes of fluids, such as wastewater from oil and gas operations, deep underground can increase pore pressure and change the stress distribution in the rocks. This alteration of stress conditions can trigger seismic activity.
2. Mining Activities: Mining operations, particularly those that involve extracting minerals or extracting and injecting fluids from underground, can cause stress changes and lead to induced seismicity.
3. Reservoir Induced Seismicity: The filling of large reservoirs, such as those created by dams, can induce earthquakes. The weight of the water in the reservoir can exert stress on the underlying rocks, potentially causing faults to slip and generate seismic events.
4. Geothermal Energy Extraction: Geothermal energy extraction involves the extraction of heat from underground reservoirs. The fluid injection and withdrawal processes associated with geothermal operations can induce seismicity.
5. Hydraulic Fracturing (Fracking): Fracking is a technique used in the extraction of oil and gas from shale formations. The high-pressure injection of fluid into the rocks can create fractures, and the release of stored stress in the surrounding rocks can lead to induced seismic activity.
It's important to note that while induced earthquakes can occur in stable areas, they are generally of smaller magnitude compared to earthquakes along major tectonic plate boundaries.
However, in some cases, induced earthquakes can reach significant magnitudes and cause damage to infrastructure and pose risks to local communities.
To know more about Energy visit:
https://brainly.com/question/13881533
#SPJ11
You are walking on the beach along the south-coast of Alaska. You see rocks cut by numerous faults that consist of basalt with evidence of eruption in the ocean, deep-water chert, mudstone, and sandstones with abundant volcanic material. What tectonic setting would you assign to these rocks
Answer:
accretionary wedge
Explanation:
Accretionary wedge is a form of tectonic setting, which describes sediments, formed at the top of material on a tectonic plate, that formed together and break where oceanic and continental plates hit into each other.
It is characterized by having strength that is similar to that of the formation on existing thrust faults in the wedge
Hence, in this case, the tectonic setting that would be assign to these rocks is ACCRETIONARY WEDGE.
Lake assal is the lowest point on which continent?.
Answer:
Africa
Explanation:
Hope my answer helps :)
hi friend i have YOUR answer! want to hear it here it is! :)
=============================================================== have a great week!
Africa
Lake assal is a saline Lake that lies 155 m (509 ft) below sea level in the afar triangle making it the lowest point on land in Africa and the third lowest point on earth after the sea of Galilee and the dead sea!
===============================================================
want to hear a fun fact? here it is!
An apple, potato, and onion all taste the same if you eat them with your nose plugged
===============================================================can i have brainliest answer friend thanks!
an article suggests the uniform distribution on the interval (7.5, 20) as a model for depth (cm) of the bioturbation layer in sediment in a certain region.
The article suggests that a uniform distribution on the interval (7.5, 20) is a model for the depth (in cm) of the bioturbation layer in sediment in a certain region.
In the context of sediment analysis, the bioturbation layer refers to the layer of sediment that has been mixed or disturbed by biological activity, such as burrowing organisms or other processes. The article proposes using a uniform distribution to model the depth of this layer within a specific region.
A uniform distribution, also known as a rectangular distribution, is a probability distribution where every value within a specified interval has an equal chance of occurring. In this case, the interval (7.5, 20) represents the possible range of depths for the bioturbation layer.
By suggesting the use of a uniform distribution model, the article implies that the depth of the bioturbation layer in the studied region can vary between 7.5 cm and 20 cm, with each depth value within this range having an equal probability of occurrence. This distribution assumes that there is no preferential depth or bias towards certain values within the interval.
Researchers can utilize this model to analyze and interpret data related to the depth of the bioturbation layer in sediment. It provides a statistical framework for understanding the variability and range of depths within the specified region, aiding in further investigation and assessment of sediment characteristics and bioturbation processes.
Learn more about uniform distribution: https://brainly.com/question/16898402
#SPJ11
While reflecting on his career in farming, how does Tom Tranthum explain his success? What
advice does he have for others?
Tom Trantham of Pelzer, South Carolina, a pioneer who built a grazing dairy, an on-farm bottling plant, and a creamery, produces forage crops all year round.
This mimics the luscious and nourishing grazing that is typical of most farms in April.
Trantham has been chosen as the 2015 Swisher Sweets/Sunbelt Expo Southeastern Farmer of the Year winner for South Carolina as a result of his performance as a dairy farmer.
Trantham is one of ten state winners who have advanced to the finals for the award. On Tuesday, October 20, during the Sunbelt Ag Expo agricultural show in Moultrie, Georgia, the overall winner will be declared.
To know more about Farmer , click here:
https://brainly.com/question/18390861
#SPJ4
If a person indeed has diabetes, the percentage of test results that represent a false negative is %. the percentage of test results that represent a false positive is %.
If a person indeed has diabetes, the percentage of test results that represent a false negative is 0.01%. the percentage of test results that represent a false positive is 0.15%.
What is diabetes?When someone has diabetes, their body either produces insufficient insulin or uses it improperly.
A chronic (long-lasting) medical disease called diabetes affects how the body converts food into energy.
The majority of the food we consume is converted by the body into sugar (glucose), which is then released into the circulation.
Learn more about diabetes:
https://brainly.com/question/504794
#SPJ1
What rights should animals have?
A 20m long wave is in .5m of water. This wave is a
a. Transitional Wave
b. Not enough information
c. Shallow water wave
d. Deep water wave
A 20 m long wave is in 5m of water. This wave is a Transitional Wave. The correct option is a.
What are Transitional Waves?Transitional waves are waves that move through water at a depth that is larger than one-twentieth of the wavelength but less than half of the wavelength (1/20 L D 1/2 L). Wind-generated waves that have migrated into shallower water are frequently transitional waves.
Transverse waves are waves that oscillate along routes that are perpendicular to the direction in that the wave is moving forward.
Therefore, the correct option is a. Transitional Wave.
To learn more about Transitional Waves, refer to the link:
https://brainly.com/question/29560163
#SPJ1
This image shows a few of the world’s tectonic plates and the direction of their movement. The country of Iceland produces approximately 25% of its electricity from geothermal energy. What about Iceland’s location makes it particularly well-suited to producing electricity using geothermal energy?
As, Iceland has a plentiful supply of hot, easily accessible subsurface water because it is home to more than 200 volcanoes and several hot springs, it is particularly well-suited to producing electricity using geothermal energy.
Also, Iceland is located on a plate border where two plates are diverging. This plate boundary experiences a rapid spike in heat from the Earth's core. Due to its abundance of geothermal energy, Iceland is ideally suited for producing power.
What is geothermal energy, and what are some examples?Heat from the earth is referred to as geothermal energy. The Greek words geo (earth) and therme are the origin of the word geothermal (heat).
Since heat is continually created inside the ground, geothermal energy is a renewable energy source. Geothermal heat is used by people to generate
To know more on Geothermal Energy visit:
https://brainly.com/question/23018645
#SPJ1
Analyze the map above. Using complete sentences, discuss the population distribution of the United States. Make sure to address the issue of climate and at least one other factor that has created such an uneven population distribution throughout the region.
Answer: The population distribution of the United States is that more increases of population happens more in the North and few gravitate to the west which is shown on the map. This reason is because in the east, there tend to be more humid than the west which makes it a more easier place to live. Which then leads to more and more people moving to the east or even immigrating from the mid eastern countries which can lead to uneven distribution of population.
Explanation: I got it right on my test
Answer:
The population distribution of the United States is that more increases of population happens more in the North and few gravitate to the west which is shown on the map. This reason is because in the east, there tend to be more humid than the west which makes it a more easier place to live. Which then leads to more and more people moving to the east or even immigrating from the mid eastern countries which can lead to uneven distribution of population.
what is done with the overburden (waste rock) that is removed from mountaintop removal sites? it is deposited into mining tunnels in closed coal mines. it is stored close to the site and used to help restore the area after mining is finished. it is dumped into neighboring valleys. it is crushed and used as construction material.
The most recommended option is the one that has the least environmental impact and can help to mitigate the impacts of mining on the local landscape and ecosystem.
Mountaintop removal is a type of mining that involves the removal of the upper layers of a mountain or hill to access the coal seams beneath. This process generates a significant amount of waste rock, also known as overburden, which needs to be disposed of. The management and disposal of overburden can have a significant environmental impact and it's crucial that it's done in a responsible and sustainable way.
One of the most common ways to dispose of overburden is to deposit it into mining tunnels in closed coal mines. This is known as backfilling and it's a way of returning the overburden back into the mine, thus reducing the environmental impact. This method is often used when the mine is no longer active and the tunnels are no longer in use. It can be used to fill in voids created by the mining process and can help to prevent subsidence, which is the sinking of the land surface caused by the removal of coal.
Another option is to store overburden close to the mining site and use it to help restore the area after mining is finished. This can include using the overburden to rebuild the mountain or hill that was removed, creating a new landscape and ecosystem. This method can also be used to create new habitats and environments for wildlife, or to create landforms that are suitable for recreational activities.
Learn more about Mountaintop at : https://brainly.com/question/13956724
#SPJ4
sydney is among the first places to celebrate the new year each year. which ancient civilization is believed to be the first to celebrate the occasion?
Is nuclear power likely to increase in the future?
it may increase or not because nobody knows what will happen tomorrow
What bird makes the longest migration in the world?.
Answer:
The Sooty Shearwater
Explanation:
Which bird migrates across the greatest distance?
The Sooty Shearwater is the world's longest migratory bird. This bird has been reported to travel approximately 64,000 kilometers every year.
Compared to an inland location of the same elevation and latitude, a coastal location is likely to have
A) warmer summers and cooler winters
B) cooler summers and warmer winters
C) warmer summers and warmer winters
D) cooler summers and cooler winters
A coastal location is likely to have warmer winters and cooler summers compared to an inland location of the same elevation and latitude(B).
The ocean has a moderating effect on temperature, causing coastal areas to have milder temperatures than inland areas. In the summer, the land heats up faster than the ocean, causing warm air to rise and cooler air to flow in from the ocean, resulting in cooler temperatures.
In the winter, the opposite occurs, where the land cools down faster than the ocean, causing warm air to flow in from the ocean and increasing temperatures. This results in warmer winters and cooler summers in coastal locations compared to inland locations at the same elevation and latitude.
Therefore, option A is incorrect, and option B is the correct answer. Coastal locations tend to have a more moderate climate, which can be beneficial for agriculture and other activities that are sensitive to temperature changes.
For more questions like Temperature click the link below:
https://brainly.com/question/11464844
#SPJ11
Which explains the difference between the equator and the prime meridian?
The equator separates the Northern and Southern hemispheres, while the prime meridian divides the Western and Eastern hemispheres.
The equator separates the Western and Eastern hemispheres, while the prime meridian divides the Northern and Southern hemispheres.
The equator separates the Northern and Western hemispheres, while the prime meridian divides the Southern and Eastern hemispheres.
The equator separates the Western and Southern hemispheres, while the prime meridian divides the Northern and Eastern hemispheres.
Answer:
The equator separates the Northern and Southern hemispheres, while the prime meridian divides the Western and Eastern hemispheres.
Explanation:
The line that circles the Earth midway between the North and South poles is known as the Equator, whereas the Prime Meridian is the line that passes through Greenwich, England. The fictitious line that circles the globe's center is known as the Equator.
Thus, Option A is correct.
How are the Equator and the prime meridian similar?The Earth is completely encircled by the equator and prime meridian circles. The Northern and Southern Hemispheres are divided by the Equator.
At 0° latitude, the Equator is located. The Prime Meridian divides the hemispheres into the Eastern and Western. The Equator's line of zero degrees latitude separates the Earth into its two equal hemispheres (north and south).
Latitude of 0 degrees marks the location of the Equator. Caitlin Dempsey, map The Prime Meridian is a hypothetical line at latitude 0 degrees.
For more information about the prime meridian refer to the link:
https://brainly.com/question/20573958
#SPJ5
how does the discharge of a river typically change as the river travels from its headwaters to its mouth?
When a stream enters a lake or ocean velocity inceases
How does climate affect the way people that lives in Toronto, Canada? (two ways)
Answer:
The regions of Western Canada are very vulnerable to climate change related extreme weather events. The increasing frequency of forest fires, storm surges, coastal erosion, landslides, snowstorms, hail, droughts, and floods could have devastating impacts on the critical infrastructure of British Columbia and Alberta.
Is Soft determinism is also known as incompatible
please help me!!! i'll mark you brainliest
20 points (geography)
AnswerClimate plays a major role in the distribution of the world's large-scale ecosystems. ... For example, Tropical rainforests have the greatest amount of biodiversity on earth because they have a warm, constant temperature, lots of sunlight and high levels of moisture (equatorial climate).
:
Explanation:
trenches and island arcs are found at spreading centers.
Trenches and island arcs are NOT found at spreading centers but are instead found at subduction zones.
A trench is a deep V-shaped valley that forms when one lithospheric plate is forced under another at a subduction zone. On the other hand, an island arc is a curved chain of volcanic islands that forms on the overriding plate near a subduction zone.
Trenches are deep, elongated depressions on the seafloor that form at subduction zones, which are convergent plate boundaries where one plate is forced beneath another. The subducting plate descends into the mantle, creating a trench on the ocean floor. Examples of trenches include the Mariana Trench in the western Pacific Ocean and the Peru-Chile Trench along the western coast of South America.
Island arcs, on the other hand, are curved chains or clusters of volcanic islands that form parallel to and above subduction zones. They are created by volcanic activity resulting from the melting of the subducting plate as it descends into the mantle. The Aleutian Islands in Alaska and the Japanese archipelago are examples of island arcs.
Spreading centers, also known as divergent plate boundaries, occur where tectonic plates are moving apart. These regions are characterized by volcanic activity, but the volcanoes formed at spreading centers are typically shield volcanoes rather than island arcs. Additionally, spreading centers can lead to the formation of mid-ocean ridges, where new oceanic crust is generated as magma rises to the surface and solidifies.
In summary, trenches and island arcs are associated with convergent plate boundaries, while spreading centers are characterized by volcanic activity and the formation of mid-ocean ridges.
To learn more about Trenches
https://brainly.com/question/28969316
#SPJ11
circle lake chad and the atlas mountain and what direction would a camel caravan travel to get from lake chad to the atlas mountains
To get from Lake Chad to the Atlas Mountains, a camel caravan would travel in a northwesterly direction. Here's an explanation of why: Circle Lake Chad and the Atlas Mountain: Lake Chad is located in the west-central part of Africa. The Atlas Mountains are located in northwest Africa.
The two are separated by a large stretch of land that includes the Sahara Desert. A camel caravan that wants to travel from Lake Chad to the Atlas Mountains must cross this desert. A desert caravan usually travels in the direction that will minimize the risk of dehydration and heat exhaustion caused by the sun. A journey in a northwesterly direction is often the best option because it allows for shorter journeys between Wate sources. The he Atlas Mountains are located in the northwest region of Africa, while Lake Chad is located in the central region of Africa. To reach the Atlas Mountains, a camel caravan from Lake Chad would need to travel in a northwesterly direction, passing through the Sahara desert. The direction of travel is influenced by the need to minimize the risk of dehydration and heat exhaustion due to the scorching heat of the sun.
For more information on Sahara Desert visit:
brainly.com/question/27330176
#SPJ11
what happens to a sedimentary rock if there is a change in the type of rock that is being deposited?
Sedimentary rocks are formed from the accumulation and consolidation of sediment that has been deposited over time. Sediments can be of various types such as sand, mud, clay, and even the remains of living organisms.
When there is a change in the type of sediment being deposited, the resulting sedimentary rock will also change.
For example, if there was a change in the source of sediment from a rocky mountain range to a nearby river, the resulting sedimentary rock would be different. Sediments from the mountain range would be coarser and more angular, resulting in a conglomerate or sandstone. Whereas sediments from the river would be finer and more rounded, leading to the formation of siltstone or shale.
Similarly, if there was a change in the environmental conditions during deposition, the resulting sedimentary rock would be different. For example, a shift from a marine environment to a terrestrial environment would result in the formation of different types of sedimentary rocks.
Learn more about sedimentary rocks here:
https://brainly.com/question/29771190
#SPJ11