Why is air colder at higher altitudes?
High-altitude locations are usually much colder than areas closer to sea level. This is due to the low air pressure. Air expands as it rises, and the fewer gas molecules—including nitrogen, oxygen, and carbon dioxide—have fewer chances to bump into each other.
Why are mountain tops colder as compared to plains?
Mountains are cooler than plains because with increase in height the temperature decreases. EXPLANATION: Mountains are located in high elevations and plains are located in low elevations. Their respective heights are measured by term called as their height above sea level.
Why are hill stations cold?
One of the factors which affect the climate of a place is the altitude. At a higher altitude, the atmosphere is less dense and the temperature decreases. As a result, hill stations are cooler than the mainland.
Why the temperature decreases with altitude?
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands), and the temperature decreases. … The temperature in the troposphere — the lowest layer of the earth’s atmosphere — generally decreases with altitude.
What is considered high altitude living?
What is considered a “high elevation” in terms of getting altitude sickness? … High altitude: 8,000 to 12,000 feet above sea level. Very high altitude: 12,000 to 18,000 feet. Extremely high altitude: 18,000+ feet.
How much colder is it in the mountains?
The rate of decline is surprisingly fast: around 1°C for every 100m, and continues all the way up to the so-called tropopause around 12km above the Earth. At these altitudes, barely 10 per cent of the atmosphere remains, and the air pressure is so low that the temperature falls to a lethally cold -55°C.
Why does the windward side of the mountain have a wet climate?
As the air moves up the windward side of a mountain, it cools, and the volume decreases. As a result, humidity increases and orographic clouds and precipitation can develop.
Why the temperature is low in hills?
At sea level, the atmospheric pressure is more and in a HILL STATION the Atmospheric pressure is comparatively LESS. As Pressure decreases ,the Temperature also Decreases. … The water vapour present at HILL STATIONS is LESS so there is less absorption of HEAT from the SUN which prevents the rise of temperature.