What is air pressure?
Answer: It is the weight of air molecules pressing down on the earth.
Explanation: Without air, then their would be no living creatures roaming around on earth.
The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.
An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury.
Atmospheric pressure drops as altitude increases. The atmospheric pressure on Denali, Alaska, is about half that of Honolulu, Hawai'i. Honolulu is a city at sea level. Denali, also known as Mount McKinley, is the highest peak in North America.
As the pressure decreases, the amount of oxygen available to breathe also decreases. At very high altitudes, atmospheric pressure and available oxygen get so low that people can become sick and even die.
Mountain climbers use bottled oxygen when they ascend very high peaks. They also take time to get used to the altitude because quickly moving from higher pressure to lower pressure can cause decompression sickness. Decompression sickness, also called "the bends", is also a problem for scuba divers who come to the surface too quickly.
Aircraft create artificial pressure in the cabin so passengers remain comfortable while flying.
Atmospheric pressure is an indicator of weather. When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation. High-pressure systems usually lead to fair, calm weather.
Vocabulary
Term Part of Speech Definition
air
noun
layer of gases surrounding Earth.
aircraft
noun
vehicle able to travel and operate above the ground.
air pressure
noun
force pressed on an object by air or atmosphere.
altitude
noun
the distance above sea level.
atmosphere (atm)
noun
(atm) unit of measurement equal to air pressure at sea level, about 14.7 pounds per square inch. Also called standard atmospheric pressure.
atmospheric pressure
noun
force per unit area exerted by the mass of the atmosphere as gravity pulls it to Earth.
barometer
noun
an instrument that measures atmospheric pressure.
Celsius scale
noun
scale for measuring surface temperature, used by most of the world, in which the boiling point of water is 100 degrees.
cloud
noun
visible mass of tiny water droplets or ice crystals in Earth's atmosphere.
decompression sickness
noun
serious condition resulting from gases forming tiny bubbles in the bloodstream as a body adjusts to a major change in atmospheric pressure. Also known as DCS, divers disease, and the bends.
exert
verb
to force or pressure.
Fahrenheit scale
noun
scale for measuring surface temperature used by Belize, Liberia, Myanmar, and the United States.
force
noun
power or energy that activates movement.
gravity
noun
physical force by which objects attract, or pull toward, each other.
high-pressure system
noun
weather pattern characterized by high air pressure, usually as a result of cooling. High-pressure systems are usually associated with clear weather.
low-pressure system
noun
weather pattern characterized by low air pressure, usually as a result of warming. Low-pressure systems are often associated with storms.
mercury
noun
chemical element with the symbol Hg.
mercury barometer
noun
tool that determines atmospheric pressure by measuring how much mercury moves in a glass tube.
meteorologist
noun
person who studies patterns and changes in Earth's atmosphere.
millibar
noun
(mbar) unit of pressure equal to .001 bar of atmospheric pressure.
oxygen
noun
chemical element with the symbol O, whose gas form is 21% of the Earth's atmosphere.
precipitation
noun
all forms in which water falls to Earth from the atmosphere.
scuba
noun, adjective
(self-contained underwater breathing apparatus) portable device for breathing underwater.
sea level
noun
base level for measuring elevations. Sea level is determined by measurements taken over a 19-year cycle.
weather
noun
state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness.
wind
noun
movement of air (from a high pressure zone to a low pressure zone) caused by the uneven heating of the Earth by the sun.
what are the advantages and disadvantages of building dams?? please help
Answer:
Advantage:
They control the floods because water can be stored in them, and they are the primary source of power generation.
Disadvantage:
Disrupt paths of fishes that are traveling in the same river
Explanation:
What is the capital of Saudi Arabia?
The capital of the oil producing nation of Saudi Arabia is the rich city of Riyadh.
Saudi Arabia is:
A very rich and popular country Located in the Middle East.They have several cities that are quite popular for being important in the Muslim religion such as Mecca and Medina.
Regardless of the popularity of these cities however, the administrative capital of Saudi Arabia is Riyadh.
In conclusion, the answer is Riyadh.
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PLEASE ASAP
Which supranational organization refers refugees to the US Citizenship and Immigration Services for resettlement consideration?A) European UnionB) United NationsC) North Atlantic Treaty OrganizationD) Association of Southeast Asian Nations
Option B United Nations
See
European union is for European countriesNATO is military organizationaSAN is asian countries organisation.These three have no use of US refugees referal.
So Only UN can do it.
Option B
Pretend that you were the president of a country. What are 3 things you will do to address the centrifugal forces and 3 things you will do to instill centripetal forces or nationalism in your country?
As the President of a country, it is vital to have a national goal that promotes centripetal forces or nationalism like promoting cultural and national identity as well as nationalism.
Now, 3 things to address centrifugal forces:
Ensure equity in resource distribution: The unequal distribution of resources such as power, wealth, and land can create feelings of marginalization and dissatisfaction among certain groups, which can eventually lead to centrifugal forces. As a president, I will ensure that resources are fairly distributed, and everyone has equal access to these resources.
Encourage dialogue and conflict resolution: One of the centrifugal forces that can break a nation apart is conflict and a lack of dialogue between different groups. As a president, I will encourage dialogue and conflict resolution to promote peace and unity among different groups.
Promote intercultural understanding and tolerance: Different cultural, religious, and linguistic groups in a country can have diverse beliefs and values that can lead to centrifugal forces if there is no understanding and tolerance for these differences. As a president, I will promote intercultural understanding and tolerance to minimize conflicts and promote unity.
3 things to instill centripetal forces or nationalism in my country:
Promote cultural and national identity: A sense of identity can unite different groups in a country. As a president, I will promote cultural and national identity to foster a sense of belongingness among citizens.
Promote Nationalism: As a president, I will promote nationalism by encouraging citizens to feel a sense of pride in their country and their national achievements. Nationalistic symbols, such as flags, national anthems, and monuments, can be used to instill nationalism among citizens.
Encourage citizenship participation: Encouraging citizens to participate in civic duties, such as voting, volunteering, and community service, can foster a sense of unity and national pride. As a president, I will encourage citizenship participation to promote centripetal forces and nationalism.
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How do archaeological finds suggest when people first came to North america?
Answer:
Whereas archaeologists once thought that the earliest arrivals wandered into the continent through a gap in the ice age glaciers covering Canada, most researchers today think the first inhabitants came by sea.
Explanation:
hope this helps
Answer:
Whereas archaeologists once thought that the earliest arrivals wandered into the continent through a gap in the ice age glaciers covering Canada, most researchers today think the first inhabitants came by sea.
Explanation:
HELP I really need help please and thank you I am FARKLE!
Answer: Answer A:varied;what ever the mapmaker or map-reader needs to study
Explanation: trust me
Question 1 help me pls
Answer:
literally go to the dang website on the paper
Explanation:
5) This population distribution is best explained by
A) recent movements of people's due to the Arab Spring.
B) previous migrations of colonial people's to imperial capitals.
C) the reluctance of European Union members to admit foreign peoples to their nations.
D) the willingness of European Union members to admit foreign peoples to their nations.
Answer:
C.
Explanation:
It is because of previous migrations to imperial capitals. There aren't a lot of people moving to London now but in the 1800-1900s there were Indians and Africans coming to seek a better life under English rule but countries in both of those regions were also controlled by Britain.
Answer:
the reluctance of European Union members to admit foreign peoples to their nations.
Explanation:
The distribution is reference to pre world war or British era .
The people British were ruling were also coming to British rule in London to live a better life
So option C is correct
Which nations produce more of the world's pollution?
LDCS
MDCs
Answer:
The answer is MDCs
Explanation:
MDCs produce more of the world's pollution than LDCs
Read the following sentence from the section "The Big Bang Formed The Universe." Then, fill in the blank. Or did the universe first organize as immense clumps of matter that later broke apart into galaxies? The word "immense" in the sentence above emphasizes
A. the uncontrolled and random force of the Big Bang
B the mystery surrounding the formation of the universe
C. the huge scope and significance of the Big Bang
D. the orderly structure of the early universe
A. the uncontrolled and random force of the Big Bang
Why does a hurricane begin to dissipate after it makes landfall?
answer quick thank you!
Answer:
Warm temperature
Explanation:
A) it is away from its energy source (the ocean)
B) warm temperatures causes the seawater to evaporate (moisture fuels the hurricane) thus as the hurricane moves over land and is away from a key source of moisture it dissipates after it makes landfall.
Hope this helps!
I NEED HELP RIGHT NOWW! What issues are on the United Nations agenda for sustainable development for 2015?
Answer:
to find new ways to improve the lives of the world's people, to eradicate poverty, to promote prosperity and well-being for all,
Explanation:
The goal of the plan: to find new ways to improve the lives of the world's people, to eradicate poverty, to promote prosperity and well-being for all, to protect the environment, and to fight against climate change.
Please HELP asap I’ll mark brainliest
Answer:
B. clustered
Explanation:
Every building is bunched up together
What two airmasses are most important to the weather of the United States east of the Rocky Mountains
Continental polar (cP) and maritime tropical (mT) air masses influence the weather of North America most.
why is economic prosperity important for country
Answer:
Why is economic prosperity important for country
Explanation:
-Economic growth is essential to allow countries to reduce and eventually eliminate extreme poverty. Growth also generates the resources countries need to address a wide range maybe.
which two uses consume most freshwater in the united states?
Answer:
Thermal power and irrigation remained the two main water users in 2015, and the total withdrawal for thermal power decreased but increased for irrigation.
What percentage of the day would you expect to have sunlight at the equator in January? In June?
Answer:
85% of the day
What are the top three characteristics distinguishing human beings from other animals?
Answer:
please mark me as brainliest
Explanation:
Generative computation. Humans can generate a practically limitless variety of words and concepts. ...
Promiscuous combination of ideas. ...
Mental symbols. ...
Abstract thought
Answer:
Generative Humans can generate a practically limitless variety of words and concepts
Promiscuous combination of ideas
Mental symbols
Abstract thought
Explanation:
most earthquakes happen underwater. What is the effect of a large one
Answer:
The effects of a large underwater earthquake may be a Tsunami
Which continent needs anti-natal policies, but struggles with the means to effectively implement them?A) AsiaB) EuropeC) AfricaD) North America
Answer:
Anti-natalist policies are prevalent in Asian countries, such as China and Singapore. China and Singapore adopted anti-natalist policies in … the policies included those shown below. This means that, due to the countries socio-economic situation, they need an increase in the birth rate.Dis 2, 2020
Explanation:
pa brainlest
Which international organization would most likely defend a western European against an invasion from an Asian country?
A. The Red Cross
B. The World Health Organization
C. The Red Crescent
D. The North Atlantic Treaty Organization
Answer:
D.north atlantic treaty organization
on december 22, where is the location of the most intense, direct sunlight on the planet?
Answer:
Tropic of Capricorn
Explanation:
The sun's vertical rays strike the Tropic of Cancer, 23.5° north of the Equator, during the June solstice. The subsolar point then begins its migration south, and vertical rays strike the Tropic of Capricorn, 23.5° south of the Equator, during the December solstice.
How does a sea anemone feed?
What is the overall direction of global air currents at the equator?.
Answer:
North
Explanation:
At the present time, scientists are confident that _____ processes and features are not restricted to Earth.
Answer:Geologic
Explanation:
which temperature most likely corresponds to the asthenosphere
Answer:
The lithosphere-asthenosphere boundary
Explanation:
because is conventionally taken at the 1300 °C isotherm. Below this temperature (closer to the surface) the mantle behaves rigidly; above this temperature (deeper below the surface) it acts in a ductile fashion.
What do the Mississippi and Amazon river have in common?
Answer:
Both are facing increasing pollution.
Both are experiencing a loss of biodiversity.
Explanation:
which ocean is home to the tiny archipelago nation of comoros?
Answer:
The Indian Ocean
Explanation:
From the locations of past coastlines and possible future coastlines, what conclusion can be made about how sea level is tied to glacial growth
The sea level is tied to glacial growth as a result of the changes that occur.
The glacial growth brings about a decrease in sea level.
Glacial growth occurs when water is evaporated and forms ice which is the
sold state of water as a result of the low temperature in the environment.
The ice formed brings about a decrease in sea level.
However, when the ice melts it leads to an increase in the sea level as the
liquid water formed from the ice which flows into the water bodies thereby
bringing about an increase.
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