Temperature varies with altitude, as follows: In the troposphere, temperature decreases as altitude increases. In the stratosphere, temperature generally increases as altitude increases due to the increasing absorption of ultraviolet radiation by the ozone layer.

As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level. High-altitude locations are usually much colder than areas closer to sea level. This is due to the low air pressure.

The basic answer is that the farther away you get from the earth, the thinner the atmosphere gets. The total heat content of a system is directly related to the amount of matter present, so it is cooler at higher elevations.

It has more to do with air pressure. Like all gases, the air in our atmosphere is a poor conductor—because it’s not dense with particles. So, even though they’re closer to the sun, thin air in the mountains keeps them colder than the thicker air in the lowlands surrounding them.

Mountains are colder than lower elevations for the same basic reason that it’s cold outside a plane: air is always on the move, and any air that moves upward in the atmosphere will expand and cool. In this way, sunlight absorbed by the surface of a mountain or a high plateau will act to increase local temperatures.

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.

As you go to higher altitudes, there are less air molecules pushing down on you (lower pressure). When the pressure of a gas decreases, the temperature also decreases (the reverse is also true – when the gas pressure increases, the temperature increases). Therefore, the air temperature is lower at higher altitudes.

The answer is … sort of. If you examine the relationship between a country’s average male height and its average annual temperature, there is a modest inverse correlation. Or, about half of the taller populations can be explained by colder temperatures.

This is mainly because taller — and heavier — people make more body heat. If they make it faster than they can get rid of it, like during intense exercise, that can lead to heat stroke or heat exhaustion. On the flip side, taller people can stay warmer than shorter people in colder weather for the same reason.

Body temperature was inversely correlated with height and positively correlated with weight and body fat but not with lean body mass. High physical activity and sensitivity to heat were associated with a higher than average body temperature.

No, people who live in cold areas are average. These people span the gamut of heights within a few derivations of average. But, taken a whole, people who have ancestral tries to northern climates will be shorter.

Humans can with proper protecting clothing can work lower than zero degrees, though it requires more energy, but still physically possible, as compared to the higher limit of temperature. Hence humans are more tolerant towards cold weather than hot weather.

It does so by circulating blood near the surface of the skin, by exhaling warm, humidified air, and by evaporating sweat. These processes function best when ambient temperature is around 70 degrees Fahrenheit, where we feel most comfortable, and they serve to maintain core body temperature around 98 degrees F.

For many types of animals, it pays to be bigger in the colder climates that exist at high latitudes and altitudes. Heftier animals have a smaller surface area-to-volume ratio, which helps reduce heat loss — a pattern known as Bergmann’s Rule.

Animals living near colder climates are bigger in size because being heftier allows them several benefits like reducing body heat loss, researchers said. Heftier animals have a smaller surface area-to-volume ratio, which helps reduce heat loss — a pattern known as Bergmann’s Rule. …

Mammals and birds require much more food and energy than do cold-blooded animals of the same weight. This means that larger warm-blooded animals can generate more heat than they lose and they can keep their body temperatures stable more easily. Smaller warm-blooded animals lose heat more quickly.

The earliest explanation, given by Bergmann when originally formulating the rule, is that larger animals have a lower surface area to volume ratio than smaller animals, so they radiate less body heat per unit of mass, and therefore stay warmer in cold climates.

Higher temperatures result in smaller body sizes and associated decreases in metabolic rates, and it remains unknown whether this indirect effect of temperature increase could mitigate the direct positive effect of temperature on metabolic rate.

It has been known since early in the 20th century that a rise in temperature is associated with an increase in metabolic rate. Each degree C rise in temperature is associated with a 10–13% increment in oxygen consumption (18). The elevation in temperature itself is responsible for speeding up metabolism.

All materials change size with temperature change, and over small temperature changes the relative size change (∆L/L) is proportional to the temperature change, and the proportionality constant is the Coefficient of Thermal Expansion proportionality constant is the Coefficient of Thermal Expansion (CTE).

Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.

The within-species relationship between resting metabolic rate and temperature reflects the acute thermodynamic effect of temperature on the organism. As temperature increases, more ATP is required to fuel processes driven faster by higher cellular kinetic energy, at least until acclimation processes take effect.

All matter contains heat energy. All matter contains heat energy. Heat energy is the result of the movement of tiny particles called atoms, molecules or ions in solids, liquids and gases. Heat energy can be transferred from one object to another.

The sun

Heat can be transferred in three ways: by conduction, by convection, and by radiation.

• Conduction is the transfer of energy from one molecule to another by direct contact.
• Convection is the movement of heat by a fluid such as water or air.
• Radiation is the transfer of heat by electromagnetic waves.

Simple ways to reduce heat loss include fitting carpets, curtains and draught excluders. It is even possible to fit reflective foil in the walls or on them. Heat loss through windows can be reduced by using double glazing. These special windows have air or a vacuum between two panes of glass.

And unless people interfere, thermal energy — or heat — naturally flows in one direction only: from hot toward cold. Heat moves naturally by any of three means. The processes are known as conduction, convection and radiation. Sometimes more than one may occur at the same time.

Potential energy is stored energy and the energy of position.

• Chemical energy is energy stored in the bonds of atoms and molecules.
• Mechanical energy is energy stored in objects by tension.
• Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus together.