The most common external form for gem diamonds is a polished and faceted round brilliant cut.
This cut is designed to maximize the diamond's fire, brilliance, and scintillation, and is the shape used in most engagement rings. The round brilliant cut has 57 facets, including the table, crown, girdle, and pavilion, and is cut to precise mathematical proportions to create the maximum amount of sparkle and refraction of light. Other popular cuts for gem diamonds include the princess cut, cushion cut, marquise cut, and emerald cut.
In addition to the specific gravity, the clarity and color of diamonds are also indicators of its quality. Diamonds are graded according to their clarity, color, cut, and carat weight. The higher the grade, the more valuable the diamond is. Knowing the specific gravity of a diamond can help you determine its value and quality.
To know more about Diamonds , click here:
https://brainly.com/question/29775108
#SPJ4
suppose that greenland's ice sheet was to melt completely. what effect would that have on sea level?
For example, if the Greenland ice sheet were to completely melt and the meltwater were to completely flow into the ocean, then global sea level would rise by about seven meters (23 feet) and Earth would rotate more slowly, with the length of the day becoming longer than it is today, by about 2 milliseconds.
What Al-rich, platy mineral is located near the low temperature bottom of Bowen's Reaction Series? Olivine Quartz Muscovite Plagioclase
The Al-rich, platy mineral located near the low temperature bottom of Bowen's Reaction Series is Muscovite.
Bowen's Reaction Series is a classification system used in geology to describe the sequence of mineral crystallization from a magma or molten rock as it cools and solidifies.
It was first proposed by Canadian geologist Norman L. Bowen in 1928 and has since become a fundamental concept in the study of igneous petrology.
The bottom of Bowen's Reaction Series is characterized by the crystallization of minerals that are rich in aluminum (Al) and have a platy, or flat, crystal structure. Muscovite is one of the minerals that is commonly found near the bottom of Bowen's Reaction Series.
Muscovite is a type of mica mineral that belongs to the phyllosilicate group. It is composed of aluminum, potassium, silicon, and oxygen atoms arranged in thin, sheet-like layers.
Muscovite typically forms in low-temperature, hydrothermal environments and is commonly found in metamorphic rocks such as schist and gneiss.
In the context of Bowen's Reaction Series, muscovite is one of the first minerals to crystallize from a magma as it cools and solidifies. This is because muscovite has a relatively low melting temperature and is stable at low temperatures.
As the magma cools, muscovite crystals begin to form and settle out of the liquid magma. This process is known as fractional crystallization, and it results in the formation of rocks that are rich in muscovite, such as pegmatites and certain types of granites.
To learn more about muscovite, refer below:
https://brainly.com/question/5372792
#SPJ11
florida is part of a landform of the southeast portion of north america that consists of mostly flat landscape not much higher than sea level. this is called what?
What type of sediment particles have worn surfaces and rounded corners? a. sorted c. clastic b. unsorted d. dissolved
The type of sediment particles that have worn surfaces and rounded corners are typically clastic sediment particles.
Clastic sediment particles are made up of pre-existing rock fragments that have been eroded and transported by wind, water, or ice. During transportation, these particles collide with each other and with other objects, causing them to break and wear down, resulting in their characteristic rounded shape and smooth surfaces. Sorted and unsorted sediment particles can both be clastic, but sorting refers to the degree of uniformity in the size of the particles, rather than their shape. Dissolved particles, on the other hand, are usually ions that are dissolved in water and do not have a physical shape.
To know more about clastic sediment click here:
brainly.com/question/29669194
#SPJ4
which category of nations has the most land? a. most industrialized nations b. industrializing nations c. least industrialized nations d. most populous nations
The category of nations that has the most land is least industrialized nations.
What are nations?
A nation is a geographical and political entity that is larger than a state or community. A country is a geographical and political unit, as opposed to a city-state or an empire, and it is most often referred to as a sovereign state.
It has borders that are defined and acknowledged by the rest of the world, as well as a government and a standing army.
The category of nations that has the most land is least industrialized nations.
Less developed nations are typically characterized by economic underdevelopment and a relatively low standard of living. Because of their natural resources, these countries are frequently agricultural, but they may also have some manufacturing capabilities. They are nations that are not yet fully industrialized.
To know more about nations, refer here:
https://brainly.com/question/27126152
#SPJ11
which of the following are potential sources of destruction that may be caused either directly or secondarily by earthquakes? multiple select question. aftershocks fires typhoons tsunamis landslides and rock falls lightning strikes
The potential sources of destruction that may be caused either directly or secondarily by earthquakes are: aftershocks, fires, tsunamis, landslides, and rock falls. Therefore, the correct option is A, B, D, E.
Explanation:
An earthquake is a tremor or shaking that takes place on the Earth's surface. Earthquakes occur when the Earth's crust is subjected to sudden pressure or tension. Earthquakes are caused by a variety of factors, including tectonic plate movement, volcanic activity, and human activity.
The impact of earthquakes can range from minor to catastrophic, depending on the magnitude of the earthquake and the location of the epicenter.
Aftershocks: After the main earthquake, a series of smaller earthquakes occur. These smaller earthquakes are known as aftershocks, and they can cause additional harm to structures that were previously damaged by the primary earthquake.
Fires: Earthquakes can also trigger fires. Broken gas lines and electrical lines may cause fires. Earthquakes can cause structures to collapse, trapping people inside and making it difficult for emergency services to reach them.
Tsunamis: Tsunamis are large ocean waves caused by underwater earthquakes, landslides, or volcanic eruptions. They are particularly dangerous because they can travel hundreds of kilometers and hit coastlines with little warning.
Landslides and rock falls: Earthquakes can cause landslides and rock falls. These events can cause additional harm to buildings and infrastructure.
Lightning strikes: Earthquakes do not cause lightning strikes, so this option is not correct.
To learn more about earthquake, refer below:
https://brainly.com/question/29500066
#SPJ11
Mention four poor conditions the people faced in the towns
Answer:
PollutionCrimeTrafficExplanation:
which of the following are true of earthquakes related to mid-ocean ridges? multiple select question. most have hypocenters less than 20 km deep. all occur directly along the ridge itself. many occur along the axis of the ridge due to normal faulting or magma intrusions. they may occur along steep faults away from the ridge axis as the new crust cools and bends. they may be due to strike-slip motion along transform faults. most are deep faults due to movement of magma.
Earthquakes related to mid-ocean ridges have hypocenters less than 20 km deep, may occur along the axis of the ridge due to normal faulting or magma intrusions, may occur along steep faults away from the ridge axis as the new crust cools and bends, and may be due to strike-slip motion along transform faults.
Earthquakes related to mid-ocean ridges are generally caused by faults, magma intrusions, and movements, leading to tremors, shaking, and other related activities. Earthquakes related to mid-ocean ridges can occur due to a variety of reasons, including normal faulting and magma intrusions, along with steep faults away from the ridge axis. Moreover, some of the earthquakes can be due to the strike-slip motion along the transform faults that are present in the area. Most of these earthquakes have hypocenters less than 20 km deep, and they are not always along the ridge itself.
Learn more about Earthquakes:
https://brainly.com/question/248561
#SPJ11
Classical Greece and Rome have contributed greatly to our current understanding of
democracy. In ancient Greece, citizens were directly responsible for participating in
government decisions. In Rome, the citizens elected government officials to make
decisions on their behalf as part of a republican government. Both systems of
democracy direct and representativehave influenced the US political system.
After learning about the history of ancient Greece and Rome, what do you think are the
benefits of a democratic system? In what ways did democracy serve Greece and
Rome? Has there been a time when democracy didn't serve Greece or Rome in a way
that was beneficial? What circumstances contributed to the failures of democracy you
learned about in the lessons on ancient Greece and ancient Rome? Are there any
potentially negative aspects of democracy? Why or why not?
Greece and Rome came to the conclusion that citizens should participate in politics through voting, participating in public debates, passing laws, and serving on juries.
What are democracy's connections to ancient Greece and Rome?One of the main legacies of the Athenian democracy was its impact on the Roman Republic, which lasted until 27 B.C. A representative democracy was developed by the Roman Republic by modifying the concept of direct democracy, which attracted the interest of Europeans and European colonists for numerous centuries.
What distinctions existed between Greek and Roman democracies?Rome was governed as a republic, unlike Athens. The term "Republic" denoted a populist administration. According to the definition of Athenian democracy, it was not a democratic system.
To know more about Greece and Rome visit:-
https://brainly.com/question/23436709
#SPJ1
Where is the caldera volcano located?
How is the Australian government managing resources to protect the Great Barrier Reef?
Responses
a. It prevents diving in the region.
b. It prevents commercial fishing in the region.
c. It prevents tourism in the region.
d. It prevents petroleum drilling in the region.
Answer:
it prevents petroleum drilling in the region.
Explanation:
The motion of Earth’s molten rock shows characteristic patterns which can be analyzed and explained scientifically. Such analysis and explanation is impossible without understanding the principles of which kind of energy?
- Chemical
- Electrical
- Thermal
- Radiant
The motion of Earth’s molten rock shows characteristic patterns which can be analyzed and explained scientifically. Such analysis and explanation is impossible without understanding the principles of Thermal energy. The correct option is C.
The motion of Earth's molten rock is mainly driven by thermal energy. Thermal energy is energy that is generated by the heat created from reactions and conversions of other forms of energy such as chemical energy and electrical energy. In the Earth's core, the heat energy is created by the decay of radioactive elements and the gravitational energy of the Earth's mass.
This energy is transferred to the surrounding molten rock in the form of heat, causing it to flow and circulate throughout the Earth's interior. This flow of molten rock is what creates the characteristic patterns that can be analyzed and explained scientifically. Understanding the principles of thermal energy is essential in order to accurately analyze and explain the motion of Earth's molten rock. The correct option is C.
To know more about Thermal energy, click here:
https://brainly.com/question/18989562
#SPJ4
PLEASE HELP ASAP!
The Cordilleran region has many _____ which were a serious barrier to communications and transportation between the Atlantic and Pacific sides of Canada.
A. lakes
B. deserts
C. rivers
D. mountains
Answer:
The correct answer is D. mountains
Mountains are the ideal solution in this case which is a barrier.
How do mountains present a significant barrier for Canada's Atlantic and Pacific coasts?The Pacific Mountain System is a group of mountain ranges that stretches from northwest Mexico to northern British Columbia along the Pacific Ocean coast of North America. They cross into Canada from the north and extend across the United States for about 4,500 miles (7,250 km).
Eight sections can be made from the ranges. roughly speaking, south to north.
The Pacific mountain system was created as a result of the movement of tectonic plates.
This movement has folded, faulted, and intruded with molten rock the coastal mountains from the Queen Charlotte Islands southward to southern California.
to know about mountains visit :
https://brainly.com/question/10690247
#SPJ1
What is one method of IPM that is used to control pests?
One method of Integrated Pest Management (IPM) that is used to control pests is biological control. This involves using natural predators, parasites, and diseases to reduce the population of harmful pests.
Integrated Pest Management (IPM) is a sustainable approach to managing pest problems that aims to minimize the negative impact of pests on the environment, human health, and economic resources.
IPM involves a combination of techniques and strategies that are designed to prevent and manage pest infestations. These include:
Cultural control measures: This involves modifying the environment or cultural practices to make it less conducive for pests. For example, rotating crops, planting pest-resistant varieties, and maintaining proper sanitation practices.Biological control measures: This involves the use of natural predators, parasites, or pathogens to control pest populations.Physical and mechanical control measures: This involves the use of physical barriers, traps, or other mechanical methods to control pests.Chemical control measures: This involves the use of pesticides, but only as a last resort and in a targeted and judicious manner.Learn more about Integrated Pest Management (IPM): brainly.com/question/13492715
#SPJ11
4. The speech above was given to promote which
of Stalin's policies?
1. The Great Purge
2. Stalinization
3.
Collectivization
4. The Five-Year Plan
Answer:
I think 4. First Five-Year Plan
Explanation:
if it helped you please mark me a brainliest :))
What was Stalin's first policy?
In the Soviet Union the first Five-Year Plan (1928–32), implemented by Joseph Stalin, concentrated on developing heavy industry and collectivizing agriculture, at the cost of a drastic fall in consumer goods. The second Five-Year Plan (1933–37) continued the objectives of the first.
The humid subtropical climate dominates the ______ United States. A) central B) southeastern C) western D) northeastern E) southwestern.
The humid subtropical climate dominates the southeastern United States.
What is a humid subtropical climate?Humid subtropical climate is a type of climate that is characterized by hot and humid summers and mild to cool winters. This climate is found on the eastern side of the continents and is located between the latitudes of 20° and 35° north and south of the equator.
The humid subtropical climate is a type of climate found in the southeastern United States (option B).
Characteristics of the humid subtropical climate are:
Hot summers with high humidity, Mild to cool winters, Moderate rainfall throughout the year Distinct summer rainfall, Maximum rainfall during the summer months (June to September)Moderate risk of hurricanes due to location.
The humid subtropical climate is found on the eastern side of the continents and is located between the latitudes of 20° and 35° north and south of the equator. It is a type of climate found in the southeastern United States.
To know more about humid subtropical climate refer here: https://brainly.com/question/3475497#
#SPJ11
where was the largest volcanic explosion ever recorded by humans?
On the Indonesian island of Sumbawa, Mount Tambora, a volcano, erupted in 1815 with the biggest volcanic explosion ever seen by humans.
Explanation: The Mount Tambora eruption in 1815 was a devastating occurrence that affected the climate globally and claimed the lives of an estimated 71,000 people. Massive volumes of ash, gases, and debris were released into the atmosphere during the eruption of the volcano, which had an eruption force 100 times greater than Mount St. Helens' explosion in 1980. Due to the eruption's extreme intensity, global temperatures were reduced by up to 3 degrees Celsius, which caused severe crop failures and hunger in many regions of the world.
learn more about volcanic here:
https://brainly.com/question/11945125
#SPJ4
The deep-sea floor is characterized by sediment dominated by: A. fine dust and the remains of single-celled organisms. B. silt and sand derived from rivers and streams. C. calcite mud and other material derived from coral reefs.
The deep-sea floor is characterized by sediment dominated by fine dust and the remains of single-celled organisms. Hence, option A is correct.
The comparatively level deep sea floor is known as the abyssal plain. Between 3,000 and 6,000 meters below the sea's surface, there is a cold, gloomy region. Squat lobsters, red shrimp, and several sea cucumber species also call it home. Most of the time, these species have trouble finding food.
Terrigenous, pelagic, and hydrogenous sediment are the three different types of seafloor sediment. Terrible sediment is deposited on the continental shelf, continental rise, and abyssal plain and is derived from the land. Along the continental uplift, strong currents further shape it.
Calcium carbonate precipitates and the remains of shelled marine organisms combine to make limestone at the ocean's bottom. If limestone is discovered on land, likely, the region was once submerged.
To learn more about Deep-sea floor, click here:
https://brainly.com/question/29548515
#SPJ4
What type of weathering has a greater impact in colder climates? How about in warmer climates?
When it comes to weathering, the type that has a greater impact in colder climates is mechanical weathering.
In warmer climates, on the other hand, chemical weathering has a greater impact.What is weathering? Weathering is the disintegration and decomposition of rock surfaces. It is caused by environmental factors such as rain, wind, and temperature changes. Mechanical and chemical weathering are the two types of weathering that are commonly discussed. What is mechanical weathering? The physical breakdown of rocks is referred to as mechanical weathering. This type of weathering is caused by physical processes such as temperature changes and the expansion and contraction of rock due to freezing and thawing. It is most prevalent in cold, arid environments.What is chemical weathering?The chemical alteration of rock surfaces is known as chemical weathering.
This type of weathering is caused by chemical reactions between rocks and the environment, such as the atmosphere, water, or other substances. It is most prevalent in warm, wet environments.What type of weathering has a greater impact in colder climates?The type of weathering that has a greater impact in colder climates is mechanical weathering. This is because colder climates are characterized by low temperatures, which can cause rocks to contract and expand, causing them to break apart over time.
Read more about weathering here:https://brainly.com/question/829782
#SPJ11
safety measures when handling a spade, Agriculture
Answer:
Do not shovel after eating or while smoking.Take it slow and stretch out before you begin.Shovel only fresh, powdery snow; it's lighter.Push the snow rather than lifting it.If you do lift it, use a small shovel or only partially fill the shovel.Explanation:
are halides phosphates sulfates and nitrates water pollutants?
Yes, the above statement is true. Halides phosphates, sulfates, and nitrates are water pollutants resulting in water pollution.
Water pollution is when bodies of water become contaminated, usually as a result of human movement, which negatively affects how they can be used. Bodies of water include aquifers, reservoirs that hold water lakes, rivers, oceans, and groundwater. Contamination happens when contaminants enter these bodies of water.
Pollutants include things like chemicals, trash, bacteria, and parasites. All forms of pollution eventually taint water. The process of eutrophication, also referred to as the proliferation of large aquatic plants and algae, can be triggered by an overabundance of phosphorus. Algal blooms brought on by high phosphorus levels have the potential to produce poisons harmful to both human and animal health.
Sulfates also contribute to the acidity of soil and surface water, as well as to acid rain and fog, which harm ecosystems, forests, and plant life. Sulfates reflect sunlight into space because of their light color.
To learn more about Water Pollution, click here:
https://brainly.com/question/19920929
#SPJ4
the picture above shows ocean in the upper right, a beach, and land in the lower left. the red dashes trace the crest of a wave. waves move perpendicular to their crests. what principle might be illustrated by the picture?
Answer:
The picture illustrates the principle of wave motion, specifically the fact that waves move perpendicular to their crests. The red dashes trace the crest of a wave, and the orientation of the beach, ocean, and land help to illustrate the direction of the wave's motion.
Explanation:
people of sub-saharan nations considered developing are likely involved in which type of economic activity?
In sub-Saharan countries that are seen as developing, the majority of the population is probably employed in agriculture, which includes raising crops and cattle as well as engaging in fishing and forestry.
The primary source of income and employment for a sizable section of the people in many African countries is agriculture. 60% of jobs in sub-Saharan Africa are in agriculture, which also accounts for 15% of the region's GDP, according to the World Bank. In addition to commercial farmers that grow products for export, there are many others who practice subsistence farming. Mining, manufacturing, and services are other forms of economic activity in the region, but they are less prevalent than agriculture and are more commonly found in metropolitan areas.
learn more about developing here:
https://brainly.com/question/29659448
#SPJ4
how do hydraulic fracturing allows gas drillers to extract methane from impermeable rock formations.
Hydraulic fracturing, or fracking is drilling method used to extract Petroleum ( oil ) or Natural Gas from deep in earth. Fracturing is used to simplify the extraction of oil and natural gas in porous and permeable rock by stimulating the flow of fluid.
Since unconventional oil and natural gas is often trapped inside porous and rocks with low permeability such as shale. Pathway must be manually created for the fluids to flow through the rocks and into the wells. Before the widespread use of hydraulic fracturing drilling companies would drill several wells into the rocks in an attempt to free the oil and gas trapped within it. This method is not efficient as the wells ae still not able to cover a large volume of rocks . Hydraulic fracturing is a solution to this platform and is done after the drilling process.
To fracture the well , a fluid known as fracking fluid is pumped into a wellbore creating enough pressure to fracture the rock . This fluid is mostly water containing chemicals and sand. The sand in the fluid is known as a proppant and holds the crack open so that oil and gas can escape.
The injection of this fluid breaks a small amount of the rock that surrounds each other. This then increases the volume of rock that gas or oil can be extracted.
To know more about Hydraulic fracturing :-
https://brainly.com/question/3059393
the width of the intertidal zone depends on the group of answer choices tidal flat. tidal range. ebb tide. tidal bore.
The width of the intertidal zone is determined by the tidal range. Tidal flats are habitats that are submerged and exposed by the daily tidal fluctuation.
This zone of the coast is the most environmentally complex and biologically diverse part of the oceanic littoral zone. It is a habitat that is in contact with both the marine and terrestrial environments. The intertidal zone is a highly dynamic environment that is influenced by the tides, currents, waves, and storms that interact with the coastline.
As a result of the sea level changes, the intertidal zone experiences periods of submersion and exposure.In comparison to the more stable marine and terrestrial zones, the intertidal zone has greater variations in temperature, salinity, and water content. The types of organisms that are found in the intertidal zone are primarily determined by the environmental factors such as temperature, salinity, and water content. The intertidal zone has a highly specialized and unique fauna that is adapted to the harsh environmental conditions.
Some of the organisms that are found in the intertidal zone include seaweeds, barnacles, mollusks, and crabs. Tidal range refers to the difference in height between the high and low tides. The width of the intertidal zone depends on the tidal range. A large tidal range implies a greater difference between the high and low tides. This creates a larger intertidal zone. A small tidal range indicates a lesser difference between the high and low tides, resulting in a narrower intertidal zone.
For more such question on tidal range
https://brainly.com/question/15055030
#SPJ11
gradient wind balance is primarily applicable in the ___________ when the atmospheric flow pattern is characterized by __________ flow.
Gradient wind balance is primarily applicable in the atmosphere, when the atmospheric flow pattern is characterized by gradient flow.
Gradient flow describes the atmospheric inflow pattern in which wind haste increases and direction changes with adding altitude. This type of inflow is characterized by vertical and perpendicular pressure slants created by the uneven heating of the atmosphere by the Sun. In this type of inflow, the pressure grade force and the Coriolis force are the main
forces that affect the wind. The pressure grade force is responsible for creating the wind, and the Coriolis force is responsible for the wind’s direction and speed. The balance between these two forces is known as the grade wind balance, and it determines the wind speed and direction of the air currents at any given altitude.
To know more about Coriolis force visit:
https://brainly.com/question/29801913
#SPJ4
the name of the site where slippage begins and earthquake waves radiate outward is called the .
The name of the site where slippage begins and earthquake waves radiate outward is called the: hypocenter.
What is an earthquake?
An earthquake is a violent shaking of the earth that occurs as a result of the rapid release of energy from the earth's crust. Most earthquakes are caused by the movement of the tectonic plates that make up the earth's crust.
What is the hypocenter?
The hypocenter is the place where an earthquake starts, deep beneath the surface of the earth. It is the point of origin of the seismic waves that radiate outward from the earthquake's epicenter. The hypocenter is located beneath the surface of the earth, and its depth can vary from just a few kilometers to hundreds of kilometers deep.
To know more about earthquake refer here:
https://brainly.com/question/29500066
#SPJ11
what would adherents check to find out what to celebrate holy days in the catholic religion
Adherents of the Catholic religion would typically consult the liturgical calendar to determine which holy days to celebrate.
Adherents of the Catholic religion would typically consult the liturgical calendar to determine which holy days to celebrate. The liturgical calendar is a schedule of celebrations, including feasts and memorials, that are observed by the Catholic Church throughout the year. It is divided into several seasons, such as Advent, Christmas, Lent, Easter, and Ordinary Time, each with its own set of observances. The calendar is an important tool for Catholics to ensure that they are participating in the appropriate rituals and ceremonies at the right times. Additionally, local dioceses and parishes may have their own particular celebrations and customs, which adherents may also consult.
learn more about catholic religion here:
https://brainly.com/question/2653423
#SPJ1
Describe what forms the boundaries of the Ruamahunga river catchment to the East and west
The Tararua Range, a rough and forested mountain range that runs parallel to the east coast of the North Island, is the eastern boundary of the Ruamahunga River watershed. The Tararua Range, which has high peaks, slender ridges, and steep valleys, is a significant water supply for the catchment of the Ruamahunga River.
The Remutaka Range, a different mountain range that runs parallel to the east coast of the North Island, forms the western boundary of the Ruamahunga River watershed. There are numerous significant rivers and streams that run into the Tasman Sea in the Remutaka Range, which is particularly distinguished by its steep slopes and condensed ridges.
Overall, the southern North Island of New Zealand's Ruamahunga River watershed is a significant ecological and cultural landscape, and the natural boundaries that define its borders are crucial in determining the nature and dynamics of the catchment's hydrology and ecology.
To know more about Ruamahunga river:
https://brainly.com/question/1350681
what is the age dependency ratio of a country with a population of 800,000 if child population is 42% and old age population is 8%?
Answer:
Explanation:
The age dependency ratio is a measure that compares the size of the dependent population (people who are too young or too old to work) to the size of the working-age population. It is calculated by adding the percentage of the population under 15 (child population) to the percentage of the population over 65 (old age population) and dividing by the percentage of the population aged 15 to 64 (working-age population).
In this case, we are given that the child population is 42% and the old age population is 8%. This means that the working-age population is 100% - 42% - 8% = 50%.
To calculate the age dependency ratio, we add the percentage of the child population (42%) to the percentage of the old age population (8%) and divide by the percentage of the working-age population (50%):
Age dependency ratio = (42% + 8%) / 50% = 50%
Therefore, the age dependency ratio of this country is 50%, which means that for every 100 people of working age, there are 50 dependents who are either too young or too old to work.