What is the bottom most layer of the atmosphere?
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.
What is the last atmosphere layer?
The final layer of Earth’s atmosphere, where it gradually gives way to outer space, is the exosphere. This layer extends from around 440 miles above Earth to nearly 6,200 miles.
Why is the atmosphere divided into 5 different layers?
A change in temperature with distance is called a temperature gradient. The atmosphere is divided into layers based on how the temperature in that layer changes with altitude, the layer’s temperature gradient. The temperature gradient of each layer is different.
What are the layers of the atmosphere starting closest to Earth?
Troposphere. The layer of the atmosphere closest to the Earth is the troposphere. It begins at the surface of the Earth and extends out to about 4 to 12 miles (6 to 20 km).
What is the bottom layer of the atmosphere like?
At the bottom of the atmosphere, where most of the life on the surface exists, is the troposphere. The troposphere is the only atmospheric layer that can support life. The higher layers have filtered out the harmful radiation, and there are large amounts of water vapor.
Why is the thermosphere so hot?
The thermo- in thermosphere means “heat.” Even though the air in the thermosphere is thin, it is very hot, up to 1,800°C. This is because sunlight strikes the thermosphere first. Nitrogen and oxygen molecules convert this energy into heat.
Can you breathe in the troposphere?
Layers of the Earth’s Atmosphere The troposphere is where weather occurs. You breathe the air in the troposphere. Many airplanes fly in the stratosphere because it is very stable.
What is the coldest layer?
The mesosphere
The mesosphere is directly above the stratosphere and below the thermosphere. It extends from about 50 to 85 km (31 to 53 miles) above our planet. Temperature decreases with height throughout the mesosphere. The coldest temperatures in Earth’s atmosphere, about -90° C (-130° F), are found near the top of this layer.
Why is the troposphere the most important layer of the atmosphere?
The study of the troposphere is very important because we breathe the air in this layer of air. Tropospheric processes, such as the water or hydrologic cycle (the formation of clouds and rain) and the greenhouse effect, have a great influence on meteorology and the climate.
What is the order of layers in the atmosphere starting from the lower most and going to the topmost?
– Therefore, the order of earth’s atmosphere from bottom to top is the Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.
What is the highest layer?
Exosphere. Located between about 700 and 10,000 kilometers (440 and 6,200 miles) above Earth’s surface, the exosphere is the highest layer of Earth’s atmosphere and, at its top, merges with the solar wind.