Atmospheric Sciences

The boundary between Earth's atmosphere and outer space is not well-defined, but the Kármán line is commonly considered the start of space at 100 km (62 miles) above sea level. However, astronauts typically cross this boundary at around 80 km (50 miles) when they begin to experience microgravity.

The temperature of Earth's atmosphere is a measure of the average kinetic energy of air molecules. Heat in the atmosphere is transferred through processes such as conduction, convection, radiation, and phase changes. The temperature and heat distribution in the atmosphere are influenced by factors like solar radiation, greenhouse gases, and atmospheric circulation patterns.

The process of evaporation is responsible for adding water to the atmosphere during the water cycle. This occurs when water from bodies of water, such as oceans or lakes, is heated by the sun and turns into water vapor, which then rises into the atmosphere.

An air flow meter measures the amount of air entering an engine to help determine the appropriate fuel-to-air ratio for combustion. This helps optimize engine performance and fuel efficiency by ensuring the correct amount of fuel is injected based on the amount of air being drawn into the engine.

Ozone is primarily responsible for filtering sunlight in the 120-220nm region of the atmosphere. This region is known as the "ozone absorption range" because ozone molecules absorb most of the incoming solar ultraviolet radiation in this range, which helps protect living organisms on Earth from harmful UV rays.

Shifting cultivation and livestock ranching likely make up the most land area used for agriculture in the world. The livestock ranching in particular requires a great deal of land for cattle from which animals can graze.

weight of an object is minimum when it is placed at the center of the earth because when an object is in the center ,it experiences gravitational pull from all the sides.thus the net weight of an object remains to be zero.

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Possibly, but given that the centre of the Earth is unreachable and a ball of metal anyway, a more useful and achievable location for weightlessness is in Space!

When the atmosphere is opaque in certain parts of the electromagnetic spectrum, it means that the radiation in those wavelengths is largely absorbed or scattered by the atmosphere. This can limit the ability of remote sensing instruments to gather data in those specific wavelengths, affecting the accuracy and quality of the observations. Scientists need to consider these atmospheric effects when interpreting remote sensing data to ensure reliable results.

Hi there! Here's the answer, darling: The depth is about 80-90 km. above the sea's level.

without the atmosphere we would not be able to breathe, because of all of the gases in the air
it is important to living things because it provides oxygen and carbon dioxide. It insulates the Earth so it maintains a fairly constant temperature. It provides the rain.

The carbon dioxide in Earth's original atmosphere was converted into other compounds through processes like photosynthesis by early life forms and weathering of rocks. This led to the formation of oxygen and carbon reservoirs, ultimately leading to the evolution of the current atmosphere with a different composition.

Ice is, by its method of formation, all water.

Fresh water contains almost no salt, therefor almost all water

Ocean water is the saltiest, it contains the least water per unit volume

Salt solutions can contain even more salt and proportionately less water

As far as total quantity of water, there is more water in the oceans than any other location.

there is water even in the space water contain 1% of feces

The best atmospheric pressure for the human body is around 1013 millibars or 1 atmosphere. This pressure allows our lungs to easily expand and contract for breathing, and it supports the normal functioning of our circulatory system. Any significant increase or decrease in atmospheric pressure can lead to discomfort or health issues.

Monsoon season, characterized by heavy rainfall and humid conditions. The monsoon brings relief from the summer heat and is crucial for agriculture in the region. Flooding can sometimes occur in low-lying areas during this time.

As air sinks, it experiences higher pressure due to the increasing weight of the air column above it. This is because air pressure increases with depth in the atmosphere.

You need to go fast to break through the atmosphere because the air molecules are denser near the Earth's surface. Going fast provides the necessary momentum to overcome the resistance of the atmosphere and break free into space.

Three weather conditions that change daily are temperature, wind speed, and cloud cover. These conditions are influenced by various factors such as the movement of air masses, the angle of the sun, and the presence of weather systems.

The major component of Neptune's atmosphere is hydrogen and helium, with some methane. Neptune, a gas giant, still has much of the same atmosphere that it had at the time of formation.

The most common element in the atmosphere is Nitrogen (N), which is taken in by plants and animals, but is not of any use in cellular respiration, so it is exhaled straight back out during breathing. The second most common element in the air is Oxygen (in the compound, O2), which is needed by the body to carry within the blood to provide oxidation that keeps us alive and powers muscles such as the heart which pumps the blood.

The atmosphere is made up of 78% Nitrogen 21%, Oxygen, and 2% other gases such as carbon-dioxide (a compound, CO2), water vapor (H2O), and other gasses -- including the "noble" gasses such as Helium (He), Argon (Ar), Neon (Ne), and so on.

There are small amounts of gasses such as Chlorine (Cl2) and Flourine (F2), but Bromine (Br) is a liquid and not a gas at room temperature.

Inyokern, California, which receives over 355 days of sunshine per year due to the strong rain shadow effect of the eastern sierras.

The spike or droplet of water that rises above the surface when a stone is dropped into water is called a "crown splash" or "crown". It occurs due to the displacement of water caused by the sudden impact of the stone.

The zig zag line is not made by thunder but by lightning. It finds the easiest path from the cloud to earth or to another cloud and this is not always straight, it would seem. The noise of thunder is made by the air, which gets heated a lot by the lightning and expands, collapsing in again rapidly after the strike.

Yes, air density is higher at the Earth's surface compared to the atmosphere at higher altitudes. This is because gravity compresses the air molecules closer together near the surface, resulting in higher density. As you go higher in the atmosphere, air density decreases due to lower pressure and less gravitational force acting on the molecules.

this is a really good answer that i found on a different sight. :

An impending magnetic, or pole, reversal was one of the hot topics of

the 80's when the book "Pole Shift" by John White was a best seller

and it was thought that it might happen any time now.

As with most prophesies around the end of the twentieth century, the

sense of impending doom has lessened and the pole shift "warning" has

been downgraded to a pole shift "watch"

But this is one of those things that are very probably going to happen

at some point "soon" in the earth's history....it's just that mankind

has a very small view of the overall earth clock, and to the earth,

"soon" could mean anytime in the next 100,000 years, so don't hold

your breath. Scientists currently tell us that pole shifts occur, on

average, once every 500,000 years. The last pole shift was 780,000

years ago so we are overdue for one (just as we are overdue for a big

asteroid strike, and for a super volcano eruption....just hope they

don't all happen at once!)

The planet's geologic record has very clear evidence that pole shifts

have occurred many times in the past and there is no doubt that they

will occur again. ( The phenomenon referred to here as a "pole shift"

is not the shifting of the crust by thousands of miles, but rather,

changes in the magnetic field of the planet. Some unscrupulous writers

in the 70s and 80s tried to imply that the continents were going to

start sliding about like melting ice on a hot plate, but that's not

current scientific thinking.)

However, its not all good news. Until recently, it was thought that

pole shifts were a gradual process. But recent evidence from studying

the alignment of iron particles in lava flows found one case where the

Earth's magnetic field shifted 80 degrees in 13 days.

What would a pole shift do to life on Earth?

Compasses would obviously be effected as would all navigational

instruments which depend on them. So shipping, air-flight and all GPS

equipment, including satellites, would be off-line until we figured

out how to cope with the reversal. Global trade would be brought

quickly to a standstill, and the winners would probably turn out to be

those that remembered how to navigate in the old ways, such as nomadic

people and sea-farers on old sailing ships

Migratory birds, fish and animals would become confused. This might

lead to them wandering far from current feeding and breeding grounds,

into areas not suitable for them, and could quite easily be concieved

as leading to mass extinctions, habitat destruction and loss of life,

both animal and human.

While this latter theory is controversial, scientists have already

shown that insects can actually be killed as a result of fluctuations

in magnetic fields around them, and the same experimenters have shown

similar, though smaller, effects in humans, leaving them dazed and

confused. If you consider the number of humans involved in operating

machinery that would be life-threatening in the case of faulty

operation, you can see that global effects would probably be large.

In addition large scale fluctuations in magnetic fields would knock

out power suppliers, and all electro-magnetic communication could

concievably be disrupted for long periods of time.

A rapid magnetic reversal would include very large scale fluctuations

in the Earth's magnetic field, which extends out 60,000 km from the

surface of the planet. It is also thought by many doomsayers that a

diminished magnetic field which shields us from energetic particles

emitted continuously by the sun would leave us vulnerable to the

harmful effects of magnetic storms spawned by solar flares and sun

spots. This would probably be hazardous to our health :)

BUT the magnetic field does not protect the earth from solar flares.

It simply

guides the ions of the solar wind to the polar regions, where their

energetic collisions with the upper atmosphere produce the luminous

plasma

known as the Northern and Southern Lights (Aurora Borealis and Aurora

Australis). It is the earth's atmosphere that actually prevents the

solar

wind from reaching the surface, and that is independent of the

magnetic field.

It is thought by some geologists that a rapid switch in the magnetic

field could lead to stresses in rock strata and lead to major

earthquakes and volcanic eruptions, with the possible scenario of the

"Ring of Fire" all going off at once and sending the world into

nuclear winter.

So, if you consider a world with no TV, radio, telephones (fixed or

mobile), computers, shop-tills, no planes,no ships, no radar, no air

traffic control, where weapons of mass destruction were likely to go

off without human intervention, and nuclear subs suddenly started

spontaneously exploding while aged power stations lost all their

regulatory barriers, you'll get an idea of the possibilities. Think of

all the disasters they were warning about for the so called "Millenium

Bug" in 2000, then imagine them all actually happening.

Then imagine the earth shaking, hot ash falling on your head, a tidal

wave approaching, and a migratory herd of Wildebeest turning up on

your doorstep.

As for the UN....they'd pass a resolution against it, but it would

happen anyway. But what else is new?

Hope that answers your question

The stratosphere contains a layer of the Earth's atmosphere that extends from about 10 to 50 kilometers above the surface. It mainly consists of ozone molecules that absorb and scatter ultraviolet radiation from the sun, which plays a key role in protecting life on Earth from the harmful effects of this radiation.