At what approximate altitude in the atmosphere can stratospheric ozone be found answer?
Ozone location. Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth's surface and extends up to about 50 kilo- meters (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer” (see Figure Q1-2).
What percent of Earth’s history represents human existence?
0.007% To put it into perspective, the origin of our species, Homo sapiens, dates back approximately 300 thousand years ago, which also seems a long time ago, but represents only 0.007% of the entire history of the planet (4.5 billion years)!
What is the usual surface wind pattern within a northern hemisphere low pressure system *?
Low- pressure systems rotate counter-clockwise in the Northern hemisphere and High-pressure systems rotate clockwise.
What is the usual surface wind pattern within a Northern Hemisphere high pressure system?
As air tries to move from high to low pressure in the atmosphere, the Coriolis force diverts the air so that it follows the pressure contours. In the Northern Hemisphere, this means that air is blown around low pressure in an anticlockwise direction and around high pressure in a clockwise direction.
What altitude is the ozone layer?
approximately 15-40 kilometers The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.
What is the approximate air pressure at the top of the stratosphere?
The stratopause caps the top of the stratosphere, separating it from the mesosphere near 45–50 km (28–31 miles) in altitude and a pressure of 1 millibar (approximately equal to 0.75 mm of mercury at 0 °C, or 0.03 inch of mercury at 32 °F).
How long was a day 500 million years ago?
They found that years during that time were 372 days long and days were 23 and a half hours long rather than 24 hours long. It was previously known that days were shorter in the past, but this is the most accurate count found for the late Cretaceous period, according to the statement.
How old is the human population?
Homo sapiens Anatomically modern humans emerged around 300,000 years ago in Africa, evolving from Homo heidelbergensis or a similar species and migrating out of Africa, gradually replacing local populations of archaic humans.
In which direction do surface winds around low pressure centers in the Northern Hemisphere generally move?
In which direction do surface winds around low pressure centers in the Northern Hemisphere generally move? Counter-clockwise.
What are the differences between the northern and Southern Hemisphere wind ocean currents?
the result of Earth's rotation on weather patterns and ocean currents. The Coriolis effect makes storms swirl clockwise in the Southern hemisphere and counterclockwise in the Northern Hemisphere.
What is the air that sinks at latitudes of 30 degrees north and south like?
What is the air that sinks at latitudes of 30 degrees north and south like? This air is cool and dry.
How would air circulate in the northern and southern hemispheres if there were no land and Earth did not rotate?
If the Earth did not rotate and remained stationary, the atmosphere would circulate between the poles (high pressure areas) and the equator (a low pressure area) in a simple back-and-forth pattern.
Where is the stratospheric ozone?
90% of the planet's ozone is in the "ozone layer" which exists in the lower level (20-25 kilometres above sea level) of the stratosphere. The stratosphere is the region of the atmosphere which exists between 10 and 50 kilometres above the surface of the earth.
Why is the ozone layer found in the stratosphere?
Ozone in the stratosphere absorbs most of the ultraviolet radiation from the Sun. Without ozone, the Sun's intense UV radiation would sterilize the Earth's surface. Ozone screens all of the most energetic, UV-c, radiation, and most of the UV-b radiation.
At what pressure does stratosphere start?
1 millibar The stratopause caps the top of the stratosphere, separating it from the mesosphere near 45–50 km (28–31 miles) in altitude and a pressure of 1 millibar (approximately equal to 0.75 mm of mercury at 0 °C, or 0.03 inch of mercury at 32 °F). In the mesosphere, temperatures again decrease with increasing altitude.
What is the approximate height and temperature of the stratosphere?
The stratosphere is the second major strata of air in the atmosphere. It extends above the tropopause to an altitude of about 30 miles (50 km) above the planet's surface. The air temperature in the stratosphere remains relatively constant up to an altitude of 15 miles (25 km).
Are days still getting longer?
Researchers who have studied the interaction between Earth and the Moon believe that approximately 1.4 billion years ago, a day on Earth was just 18 hours long. At current rates of movement, they believe days on Earth are getting longer by about 0.000018 seconds each year.
Are nights getting longer?
Almost imperceptibly, however, Earth's day–night cycle—one rotation on its axis—is growing longer year by year, and has been for most of the planet's history.
What year will humans go extinct?
There have been a number of other estimates of existential risk, extinction risk, or a global collapse of civilization: Humanity has a 95% probability of being extinct in 7,800,000 years, according to J.
Who was the first true man?
Pithecanthropus is considered as the first upright man having a lot of traits of human characters while also some of apes and hence a true man.
Why do toilets flush in different directions?
The Coriolis effect is probably the most scientific excuse humans have for staring into toilet bowls. The effect makes objects on the Earth curve when they should go straight, and it's why some people insist that toilet bowls flush in the opposite direction on the southern hemisphere than in the northern hemisphere.
What seems to determine whether a current carries warm or cold water explain why this is so?
What seems to determine whether a current carries warm or cold water? Currents originating in low latitudes near the equator tend to carry warmer water. Currents originating in high latitudes near the north or south pole tend to carry colder water.
What happens to the air at 30 degrees latitude?
Due to the rotation of the earth, there is a build up of air at about 30° north latitude. (The same phenomenon occurs in the Southern Hemisphere). Some of the air sinks, causing a belt of high-pressure at this latitude. The sinking air reaches the surface and flows north and south.
What wind systems move air from about 30 to 60 north or south latitude to the poles?
Trade winds Describe the movement of air in the huge convection current between 30° and 60° south latitude.
Why is Coriolis zero at the equator?
Because there is no turning of the surface of the Earth (sense of rotation) underneath a horizontally and freely moving object at the equator, there is no curving of the object's path as measured relative to Earth's surface. The object's path is straight, that is, there is no Coriolis effect.
How high up in the atmosphere is the ozone layer?
The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.
Between what altitude is the ozone layer found in highest concentration?
between about 15 and 35 km altitude Most ozone (about 90%) is found in the stratosphere, which begins about 10–15 kilometers (km) above Earth's surface and extends up to about 50 km altitude. The stratospheric region with the highest concentration of ozone, between about 15 and 35 km altitude, is commonly known as the “ozone layer” (see Figure Q1-2).
What layer of atmosphere is ozone found?
the stratosphere Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure below). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
Which layer of the atmosphere contains the ozone layer?
the stratosphere Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure below). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
What is the approximate altitude and temperature of the tropopause?
The tropopause has an approximate height of 11 kilometers and an approximate temperature of -60℃. The stratosphere is the second innermost layer of the earth's atmosphere.