There are many ways to identify when a physical change has occurred. This can be done by recognizing reversible changes or eliminating chemical changes.
Physical changes involve state changes in matter and energy. These changes cause the matter to change form, but no new material is generated. Matter may alter in size, shape and color. When substances are combined but do not chemically react, physical changes take place.
A physical change can be recognized if it is reversible, especially if it involves a phase transition. For instance, if water is frozen into an ice cube, it can be melted back into water.
Sometimes eliminating the potential of a chemical transformation makes it easier to spot a physical change. There may be a number of signs that a chemical reaction has taken place.
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Full question: How to identify physical change?
What is the definition of geometrically (Human geography)
A geometric boundary is a straight line that serves as a political border and is unrelated to physical or cultural distinctions. An example is the boundary between the US and Canada.
What is geometric in AP Human Geography?By Chris Drew on July 6, 2022 (PhD). Geometric boundaries are defined as political boundaries that take on a clear and orderly geometric shape. The advantage of geometric borders is that they are easy to mark on a map and easy to understand.
What kind of geometric border is that, exactly?When a line of longitude or latitude is used to determine the political division between two states, we refer to the boundary as a "geometric boundary." the United States of America and Canada's 49th parallel Canada is a well-known illustration of a "geometric barrier."
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regiones climaticas de america
It is made up of the three subcontinents of North America, Central America, and South America, as well as an island chain known as the Antillas.
What are the three regions of the American continent?Due to its size and geographic location within this region, historically America has frequently been divided into three parts: North America, Central America, and the South.
One national region can be recognized by a regional analysis of the climate, which is based on the country's metrological and geographic conditions. These conditions are largely influenced by the mountainous systems that serve as natural boundaries and climatic barriers between the regions.
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What political system did the Soviet union adopt after the Russian revolution
Answer: Socialist.
Explanation:
"This period saw Russia abolish its monarchy and adopt a socialist form of government following two successive revolutions and a bloody civil war. The Russian Revolution can also be seen as the precursor for the other European revolutions that occurred during or in the aftermath of WWI, such as the German Revolution of 1918."
the u.s presdient gives a speech to a group of students about the importance of schools the speech come less than a week after a study found that u.s students performed lower than students in other countries which best describes the content of the presdient speech ?
Education is very important for non-public development as nicely as for the socio-economic improvement of our country. Education is necessary for residing existence happily. Moreover, it empowers and motivates our thought to conceive the appropriate ideas and ideas and grow our expertise day by means of day.
What is the fee of education speech?Education is the fundamental human right. The cost of training is very imperative for the exercising of all other human rights. It offers freedom and empowerment to all individuals. Education is the most powerful tool by way of which economically and socially backward adults and kids can carry themselves out of poverty line.
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https://brainly.com/question/23337510#SPJ9which of these are examples of clastic sedimentary rocks? (select all that apply) which of these are examples of clastic sedimentary rocks? (select all that apply) shale breccia
Examples of clastic sedimentary rocks amongst the following are
shalesandstonebrecciasiltstoneThis is further explained below.
What are clastic sedimentary rocks?Generally, Fragments of minerals and rock that were already present in the earth's crust are what make up clastic rocks.
A clast is a piece of geological debris that consists of pieces and smaller grains of rock that have been broken off of other rocks as a result of physical weathering.
In conclusion,
shalesandstonebrecciasiltstoneare all required examples of clastic sedimentary rocks
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the introduction of free oxygen to earth's atmosphere occurred approximately 2.4 billion years ago and is called the event, or goe. a second such event began about 700 million years ago.
The introduction of free oxygen to Earth's atmosphere occurred approximately 2.4 billion years ago and is called the Great Oxygenation Event, or GOE. A second such event began about 700 million years ago.
In history, the Great Oxygenation Event began when cyanobacteria managed to carry out the process of photosynthesis and produce oxygen as a by-product approximately 2.4 billion years ago.
As the oxygen concentration began to rise, the anaerobic population of bacteria began to decline. This was the biggest mass extinction that occurred first on Earth.
The production of oxygen led to other life forms coming into existence. All these aerobic life forms came into existence when the concentration of oxygen began to rise on Earth.
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The President may veto bills(propose laws) passed by Congress is an example of?
Answer:
Checks and balances
Explanation:
The president can veto laws created by congress, depending if he thinks its unfair. Congress can impeach the president, depending if they think the president is being unfair. Both the legislative branch and executive branch keep in check eachothers power.
How has agriculture developed in Africa since the 1800’s? Add source as well please thank you.
Answer:
The Origin of Agriculture in Africa (article) - Khan
The spread of African agriculture (1000 bce-500 CE) Sorghum and millet were the number one crops of West Africans, and they continued to put a lot of emphasis
is the amount of seawater water flowing in the geostrophic currents of the world ocean approximately more, less, or equal to the total amount of water flowing in all the earth's fresh water rivers?
Answer:
FALSE
Explanation:
which air mass would form over warm water?(1 point) responses maritime polar maritime polar continental tropical continental tropical maritime tropical maritime tropical continental polar
Answer: Maritime tropical
to what extent did Napolens reign reflect enlightenment
ideals?
Napoleon spread enlightenment ideas that benefited the people in France. He created the Napoleonic code, which was basically the first written document of laws. That meant that the judge could not change anything, but the laws applied to all citizens equally and protected their rights.
what type of precipitation is associated with a warm front? group of answer choices hail from cumulonimbus clouds formed along the warm front boundary. heavy downpours of rain from cumulonimbus clouds formed along the warm front boundary. a mix of heavy snow and hail from nimbostratus clouds. gentle rain from nimbostratus clouds.
The correct answer is option D: gentle rain from nimbostratus clouds.
The type of precipitation associated with a warm front is gentle rain from nimbostratus clouds.
In a low-pressure area, a warm front extends to the east whereas a cold front extends to the southward of the low pressure.
Warm air has low density than the cold front and always lies in front of the cold front.
However, in warm front is formed when it slides above the cold front. When warm air rises upward, it condenses into a broad-ranging zone of cloud called nimbostratus clouds.
The weather associated with these clouds is stormy weather that makes clouds, storms, and gentle precipitation i.e. rain.
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Why are the majority of central america’s people concentrated in the central highlands?.
Fertile soil (volcanoes): agriculture and dense population areas is why are the majority of central america’s people concentrated in the central highlands.
With the Pacific Ocean to its west and the Caribbean Sea to its east, Central America serves as a land bridge that connects the continents of North and South America. From Mexico to Panama, the interior is dominated by a major mountain range.
Tropical and humid type A climates are present in Central America's coastal plains. Elevation affects the climate in the interior of the highlands. The temperature drops as one ascends the mountain sides. The only country distant from this interior mountain system is Belize.
More people choose to dwell in the highland areas than the coastal ones due to the region's rich soils and milder climate. For Central America, environmental issues are a recurring challenge because of hurricanes, tropical storms, earthquakes, and volcanic activity.
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What allowed Sumerians to learn new skills and begin to trade?
PLEASE HELP ILL GIVE BRAINLIEST IF CORRECT!!
Order this list of events to show a typical story of migration and human-environmental interaction.
New irrigation technology brings farmers back
Farmers migrate away
Climate changes so farms can no longer be sustained
Mechanized culture uses plows to turn grasslands into farms
drowned river valleys are known in which states? drowned river valleys are known in which states? kentucky and tennessee california and nevada maryland and virginia texas and louisiana
Drowned river valleys are known in Tennessee California US states.
What is drowned river valley?Due to either down warping along the shoreline or eustatic sea-level rise, rivers that flow into a sea or lake may drown or fill with sea water.
Former river valleys frequently display a dendritic network of tributary valleys and transform into deeply indented bays and estuaries.
Drowned river valleys are distinguished by the extension into an existing river system landward, river valley cross sections, shallow waters in the estuary, and corresponding bottom levels.
Estuaries of drowned river valleys are created when existing river valleys are flooded by rising sea levels.
The Chesapeake and Delaware Bays on the Atlantic coast are the largest drowned valley coasts in the United States.
Thus, Drowned river valleys are known in Tennessee California US states.
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Explain to me in 5 sentences or more, what you believe
to be the biggest technological advancement that
created the idea of a "global Village."
This world has become a global village as a result of technology advancements. Over the past three decades, numerous governments have implemented a free market system, and as a result, their economies have attracted foreign investment.
The globe has become a global village because to communication technology. Industrial machinery and robotics are innovations. There is no doubt that society is about to adopt better and more beneficial ideas. Technology is a fantastic illustration of ingenuity. People constantly come up with fresh disruptions.
Both new products and upgrades to existing things are produced. The globe has become a global village because to communication technology. Industrial machinery and robotics are innovations.
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What is the image point of (1,8) after a translation left 2 units and down 1 unit?
Answer:
(-1,7)
Explanation:
Left 2 units changes x to -1
down 1 unit changes y to 7
(-1,7)
earthquake-related tsunami are created by subsea fault movements with pronounced vertical offsets of the seafloor. such movements occur most commonly along
Earthquake-related tsunamis are created by subsea fault movements with pronounced vertical offsets of the seafloor. such movements occur most commonly along the subduction zones.
The region where two tectonic plates collide with each other on the earth's surface is called a subduction zone.
In this geological process, the heavy oceanic plate or lithospheric plate moves down into the mantle where it is recycled through melting under high temperatures and pressure.
In general, at convergent boundaries, when a highly dense lithospheric plate converges with a less dense lithospheric plate then the heavy plate slides beneath the lighter plate into the mantle resulting in the formation of volcanoes.
Subduction zones are responsible for devastating tsunamis, earthquakes, and landslides and volcanic ranges are also formed along convergent edges.
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12. The Native Americans could not resist the Spaniards because they
thought they were
The primary reason that Native Americans were unable to defeat the Spanish conquistadors was disease. The Spanish brought with them diseases such as smallpox to which Native Americans had never been exposed and thus had no immunity.
Explanation:The Natives came to believe that the Spanish “had not their Mission from Heaven” because the Spanish so cruelly treated the Indians. The Indians saw them as evil. During the Spanish-American War (1898), Native Americans served in the First Territorial Volunteer Infantry and, most famously, the First Volunteer Cavalry, also known as the Rough Riders. On December 29, 1890, near the Wounded Knee Creek in South Dakota, U.S. troops fired at the Indians, killing and injuring more than 350 people according to the U.S. Congressional Record. After the Wounded Knee Massacre, armed Indian resistance was largely suppressed. The Spanish were able to defeat the Aztecs and the Incas not only because they had horses, dogs, guns, and swords, but also because they brought with them germs that made many native Americans sick. Diseases like smallpox and measles were unknown among the natives; therefore, they had no immunity to them. The Spanish invaded the Native lands for three main reasons: a lust for glorious battle; the desire to convert people they considered to be heathen savages; and gold or the wealth from the exploitation of Indigenous land and labour. Native Americans resisted change brought by contact with Europeans in the same period by waging war with the Europeans in order to preserve their culture. Some Native Americans also resisted change by refusing to convert to Christianity and instead kept their traditional religion.
How did the Minoans became the world's first maritime superpower?
War ravages a local countryside, and the inhabitants move hastily out of fear.
This example illustrates which of the following?
A. Immigration
B. Forced migration
C. Pull factors
D. The Great Migration
Which continents have low life expectancies?
Answer:
The countries with the lowest life expectancy worldwide include the Central African Republic, Chad, and Lesotho. As of 2020, people born in the Central African Republic could be expected to live only up to 54 years.
Explanation:
hope this will be helpful
Answer:
African continent has the lowest life expectancy.
Explanation:
Countries with the lowest life expectancy are mostly African countries. The ranking was led by the Central African Republic (53 years) in Western Africa.
What do economists call the total value of a country’s goods and services produced in a year, divided by its total population?
trade balance
quaternary economic activities
per capita gross domestic product
commercial industrial output
Answer:
Per capita gross domestic product
Explanation:
Gross domestic product is the total value of a country’s goods and services produced in a year. Per capita is a term for population meaning "per average person".
which one of the following is an important, mechanical weathering process for enlarging fractures and extending them deeper into large boulders and bedrock?
Frost wedging is an important, mechanical weathering process for enlarging fractures and extending them deeper into large boulders and bedrock.
The Frost wedging process takes place in extremely cold regions. Water filling expands when ice exerts a great amount of force on the rocks.
It is a physical disintegration weathering procedure during which ice imparts a force on the rock and results in enlarged fractures and wedges in rocks.
The term 'frost wedging' is a combined term for the mechanical weathering process during which water freezes into ice and expands 8 to 11% in its volume and resultantly putting pressure on the rocks.
In general, frost wedding is an umbrella term that covers a wide variety of processes such as cryofracturing, frost shattering, and wedging that collectively cause rock deformation overtime.
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What is the rocking, swaying movement
that occurs every 19 years called?
The rocking, swaying movement that occurs every 19 years is called the Metonic cycle.
The Metonic cycle constitutes 235 lunations, or synodic months, a 19-year period in chronology after which the Moon's phases repeat on the same days of the solar year or year of the seasons.
The Moon's phases repeat on the same days of the solar year, or year of the seasons, every 235 lunations, also known as synodic months. Athenian astronomers made the cycle discovery.
The Metonic cycle is a part of the following, more accurate approximation: 334 years equal 4131 insanities.
The Moon goes through a 19-year cycle known as the METONIC CYCLE, during which it precisely repeats its location in the sky (against the same constellation, at the same longitude).
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What are the historical connections between Buddhism and Hinduism?
Buddhist and Hindu traditions have an ancient legacy of interaction as Buddhism and Hinduism both developed in Southeast Asia and embrace the idea of rebirth.
What are the teachings of Buddhism?Buddhists hold that because human existence is one of hardship, enlightenment can only be achieved through meditation and hard work which will appear as spiritual and physical and good conduct.
Hinduism focuses on Karma and the wheels of Dharma which indicates whatever actions an individual performs in life will result in output after death.
Buddhism emphasizes that life is unsatisfied, which makes it a valuable tool for exiting the cycle of life. Rejecting desires and participating in relaxation techniques are two ways to leave existence.
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Because of the West's natural resources, two important economic activities in the region are
Answer:
a
Explanation:
Kosovo, in southeastern Europe, declared its independence from
Serbia in 2008. Centuries ago it was at the center of the Serbian
empire, but it was conquered by Turkish forces in 1389. By the time
Serbia regained control of Kosovo in 1912 to 1913, most of the
population was Muslim and spoke Albanian. In a brutal conflict in the
1990s, Serbian forces drove the people of Kosovo from their homes.
The North Atlantic Treaty Organization (NATO) launched air strikes in
1999 to force Serbia to stop the attacks. United Nations and NATO
forces then moved in to enforce the peace. After Kosovo declared
independence, many countries recognized it as a separate country,
including the United States. Even more countries did not, including
Serbia, Russia, and China.
Which of the following statements is most likely to result from the fact that
only certain countries recognize Kosovo's independence?
O A. Many jobs will be created there by the selective trade patterns that
will result.
OB. The United Nations Security Council will be unable to agree on a
unified policy.
O C. The admission of Kosovo to the World Trade Organization will help
its economy.
OD. The population of the new country will become increasingly
diverse.
C. The admission of Kosovo to the World Trade Organization will help its economy. Because its the only way that certain countries recognize Kosovo's independence.
What is World Trade Organization?The World Trade Organization is the only international agency that deals with rules governing international trade. The World Trade Organization agreements, which were negotiated, signed, and ratified by the majority of the world's trading nations, form the foundation of it. Making sure that trade moves as smoothly, predictably, and freely as possible is the aim.
The World Trade Organization performs a variety of functions, including managing a global system of trade regulations, serving as a forum for the negotiation of trade agreements, resolving trade disagreements among its members, and assisting developing nations.
All significant decisions are made by the member governments of the World Trade Organization , either through their ministers (who typically meet at least every two years) or through their ambassadors or delegates (who meet regularly in Geneva).
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The Picture Has The Questions
Answer:
Let (x,y) be unknown endpoint.
Midpoint formula is given as [(x1+x2)÷2, (y1+y2)÷2]
[x+(-10)÷2, (y+4)÷2] = (-6,-4)
Compare the x coordinates and y coordinates of midpoint and endpoint.
(x-10)÷2 = -6 (y+4)÷2 = -4
x-10 = -6(2) y+4 = -4(2)
x-10 = -12 y+4 = -8
x = -2 y = -12
Hence, coordinates of endpoint is (-2, -12).