Question

What is the average height of the troposphere?
(a) 3 km
(b) 6 km
(c) 9 km
(d) 13 km

Answer 1

13 km is the average height of the troposphere.

• The troposphere is the lowest layer of the Earth's atmosphere. Most of the weight (about 75-80%) of the atmosphere is in the troposphere. Many species of clouds are found in the troposphere, and almost all of the weather takes place within this layer.
• The word troposphere is derived from the Greek words topos (circular) and Shapira (circle) which indicate that rotational movements mix layers of air and thus determine the structure and conditions of the troposphere.
• The rotating collision of the troposphere against the planetary surface affects airflow and forms a boundary layer of the planet (PBL) that varies in length from hundreds of meters to 2 km (1.2 mi; 6,600 ft). PBL ratings vary depending on latitude, geography, and time of day in which the weather forecast is obtained.

Answer 2

Answer:

The average height of the troposphere is 13 km.

Explanation:

• The troposphere is the layer closest to the earth's surface.

• Water vapour, clouds, and dust make up the 7 to 20 km thick layer.

• The stratosphere is the second layer, which extends around 50 kilometres above the surface of the earth.

• The stratosphere is densely populated with ozone.

• The mesosphere is the region above the stratosphere that begins at 50 kilometres and extends to 85 kilometres in height.

• The thermosphere stretches from around 90 kilometres to 500 kilometres.

• The air density in this layer is quite low.

• The exosphere is the uppermost layer, with a diameter of around 500 kilometres.

• It is made up of hydrogen and helium dispersion particles.