what runs along the top of the troposphere


What Runs Along The Top Of The Troposphere?

  • Heat is transferred through the troposphere by CONVECTION CURRENTS.
  • A Cirrus cloud indicates the top of the troposphere.
  • The Jet Stream runs along the top of the troposphere.
  • The tropopause attaches itself to the Jetstream.

What currents run along the top of the troposphere?

Jet streams are located about five to nine miles above Earth’s surface in the mid to upper troposphere — the layer of Earth’s atmosphere where we live and breathe. Airplanes also fly in the mid to upper troposphere.

What is found in the upper troposphere?

Most types of clouds are found in the troposphere, and almost all weather occurs within this layer. … The height of the top of the troposphere varies with latitude (it is lowest over the poles and highest at the equator) and by season (it is lower in winter and higher in summer).

What is the upper layer of the troposphere marked by?

the tropopause
2.1 The troposphere

The troposphere is bounded above by the tropopause, a boundary marked in most places by a temperature inversion (i.e. a layer of relatively warm air above a colder one), and in others by a zone which is isothermal with height.

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What are ocean currents 7?

(vi) What are ocean currents? Answer: The streams of water flowing constantly on the ocean surface in a definite direction are called ocean currents. The ocean currents may be warm or cold.

Why does the troposphere height vary?

The height of the tropopause varies with latitude, season of the year, and the weather conditions. … As the temperature decreases with height, so the temperature at the tropopause over the poles will be higher than over the equator because the tropopause is closer to the ground here.

What things are in the troposphere?

The troposphere is made up of approximately 78% nitrogen, 21% oxygen, and 1% other gases, which include carbon dioxide, methane, neon, krypton, argon, helium, and hydrogen. The troposphere contains approximately 99% of the water vapour in the earth’s entire atmosphere.

What are two characteristics of the upper troposphere?

Characteristics of troposphere
  • it is the first atmospheric layer closet to Earth’s surface.
  • the troposphere is the region where weather occurs.
  • the temperature of troposphere decreases with an increase in height.
  • the troposphere makes up approximately 75% of Earth’s atmosphere by mass.

Why is the troposphere higher at the equator?

The troposphere is thicker over the equator than the poles because the equator is warmer. Heat differential on the planet’s surface causes convection currents to flow from the equator to the poles. … Thus the simple reason is thermal expansion of the atmosphere at the equator and thermal contraction near the poles.

Why is troposphere the densest layer?

The troposphere is the shortest layer of the atmosphere. It rises to only about 12 kilometers (7 miles) above the surface. Even so, this layer holds 75% of all the gas molecules in the atmosphere. That’s because the air is densest in this layer.

What is the elevation of the troposphere?

The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans live in the troposphere, and nearly all weather occurs in this lowest layer.

What characteristics differentiate the troposphere from the other layers of the atmosphere?

A very vigorous cumulonimbus cloud – a thunderstorm – may, however, sometimes penetrate the lowest level of the stratosphere.

How are tides caused Class 7?

How are Tides formed ? exerted by the sun and the moon on earth’s surface causes the tides. The water of the earth closer to the moon gets pulled under the influence of the moon’s gravitational force and causes high tide.

What is erosion for Class 7th?

Answer: Erosion is defined as the wearing away of the landscape by different agents like water, wind and ice. The process of erosion and deposition creates different land-forms on the surface of the earth.

What is a tsunami Class 7?

Ans. Tsunami is a Japanese word that means ‘harbour waves’ as the harbours get destroyed whenever there is a tsunami. An earthquake, a volcanic eruption or underwater landslides can shift large amounts of ocean water. As a result tsunami occurs which may be as high as 15 m. The tsunami of 2004 is still in our minds.

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How does the composition of the troposphere change with a change in latitude?

Therefore as your latitude increases the pressure drops. This drop in pressure also results in a drop in the heights of the different levels of the atmosphere. For example, the tropopause (the layer between the troposphere and stratosphere) is about twice as high at the equator than it is at the poles.

What is the height of the troposphere at the pole?

The troposphere contains the boundary layer, and ranges in height from an average of 9 km (5.6 mi; 30,000 ft) at the poles, to 17 km (11 mi; 56,000 ft) at the Equator.

What happens to the temperature as you go higher in the troposphere?

In the troposphere, the temperature generally decreases with altitude. The reason is that the troposphere’s gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.

Why are clouds formed in the troposphere?

Air is warmest at the bottom of the troposphere near ground level. … Nearly all of the water vapor and dust particles in the atmosphere are in the troposphere. That is why most clouds are found in this lowest layer, too. The bottom of the troposphere, right next to the surface of Earth, is called the “boundary layer”.

Is the troposphere hot or cold?

The troposphere, the lowest layer of Earth’s atmosphere, is heated from below. The troposphere is warmest at the bottom near Earth’s surface. The troposphere is coldest at its top, where it meets up with the layer above (the stratosphere) at a boundary region called the tropopause.

What are main characteristics of the troposphere?

Troposphere. The troposphere (between 0 and about 15 kilometers) is the first layer above the Earth’s surface and contains approximately 85 to 90 % of the mass of the Earth’s atmosphere. It is characterized by decreasing temperature with increasing altitude.

What are some characteristics about the troposphere?

The air is densest in this lowest layer. In fact, the troposphere contains three-quarters of the mass of the entire atmosphere. The air here is 78% nitrogen and 21% oxygen. The last 1% is made of argon, water vapor, and carbon dioxide.

Which characteristics describe the troposphere Brainly?

Characteristics of troposphere:
  • it contains 75% of total atmospheric air mass.
  • it contains 99% of aerosols and water vapour in the atmosphere.
  • it expands 6 to 10 km from the ground level of the Earth.

What is higher at equator than at poles?

The amount of solar energy in a given area is greater at the equator than in an equal area at the poles, which is why the equator temperature is warmer than the polar temperatures.

What causes the lower layers in the troposphere to have higher temperatures than that of the upper troposphere?

The higher gravity causes the temperature to rise. Notice that in the troposphere warmer air is beneath cooler air.

Is the atmosphere thinner at the equator?

The atmosphere is divided into five different layers, based on temperature. The layer closest to Earth’s surface is the troposphere, reaching from about seven and 15 kilometers (five to 10 miles) from the surface. The troposphere is thickest at the equator, and much thinner at the North and South Poles.

Why is troposphere warmer?

When air rises it expands since the pressures are lower aloft. Expanding air cools. Because the sun primarily warms the troposphere from the surface and because air cools as it rises, the warmest temperatures in the troposphere on average are at the earth’s surface.

Is troposphere the densest layer of the atmosphere?

The Troposphere is the lowermost portion of Earth’s atmosphere. It is the densest layer of the atmosphere and contains approximately 75 percent of the mass of the atmosphere and almost all the water vapor and aerosol. The troposphere extends from the Earth’s surface up to the tropopause where the stratosphere begins.

Which of the following best describes why the troposphere is considered the densest layer of the atmosphere?

The air is densest in this lowest layer. In fact, the troposphere contains three-quarters of the mass of the entire atmosphere. The air here is 78% nitrogen and 21%oxygen. … Weather happens in the troposphere, and almost all clouds are found in this layer.

What happens at the top of the troposphere?

At the top of the troposphere the temperature drops to a chilly -55° C (-64° F)! The boundary between the top of the troposphere and the layer above it, the stratosphere, is called the tropopause. The height of the tropopause (and thus the top of the troposphere) varies with latitude, season, and between day and night.

What happens to air as it rises in the troposphere quizlet?

What happens to air as it rises in the troposphere? It cools, condenses and forms clouds. … Air moves from low pressure to high pressure, creating wind.

At what height in the troposphere does the temperature decrease?

This temperature decrease is known as the environmental lapse rate and averages 6.5 ºC/km. This layer extends from the surface up to an average altitude of 11 km (Ahrens 10). This altitude can range as high as 16 km in the tropics to less than 9 km over the poles (Lutgens 19).

How does the troposphere differ from the stratosphere quizlet?

How does the troposphere differ from the stratosphere? All of the above; The troposphere has higher atmospheric pressure and concentrations of water vapor. Also temperatures in the troposphere typically decrease with an increase in altitude. How do atmospheric conditions affect air pollution?

How does the troposphere differ from the stratosphere?

As can be seen in the comparison of the pie charts below, the major differences between the stratosphere and troposphere are the concentrations of ozone and water vapor: the stratosphere has much higher concentrations of ozone than does the troposphere, while the troposphere has much higher concentrations of water …

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