conduction
how does conduction transfer heat?
What is? conduction transfers heat through touch or contact.
how does convection transfer heat?
What is? Hot air rising cold air sinking.
How does radiation transfer heat?
What is? Through electromagnetic waves.
What is air pollution?
What is? when unwanted chemicals gases and particles enter the air and atmosphere causing harm to the atmosphere.
what is air density?
what is? Air density is defined as the mass of air per unit volume, whereas the specific volume is defined in terms of unit mass of dry air.
How does conduction occur?
what is? when two things at different temperatures touch each other and energy directly transfers from the material in the hotter object to the material in the colder object at the point of contact.
how does convection occur?
what is? by areas of a liquid or gas heating or cooling greater than their surroundings, causing differences in temperature.
how does radiation occur?
what is? It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines.
how does air pollution occur?
what is? contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere.
how does air density occur
what is? Air density is determined by Pressure, Temperature, and Humidity.
what causes conduction?
Conduction heat transfer is the transfer of heat by means of molecular excitement within a material without bulk motion of the matter. Conduction heat transfer in gases and liquids is due to the collisions and diffusion of the molecules during their random motion.
what causes convection?
Convection currents are heat-driven cycles that occur in the air, ocean, and mantle. They are caused by a difference in temperature, often due to a differing proximity to a heat source. The difference in temperature relates directly to the density of the material, causing this effect.
what causes radiation?
It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines.
what causes air pollution?
what is?Vehicle emissions, fuel oils and natural gas to heat homes, by-products of manufacturing and power generation, particularly coal-fueled power plants, and fumes from chemical production
what causes air density?
what is ? The air's density depends on its temperature, its pressure and how much water vapor is in the air.
how does conduction affect the environment?
Conduction directly affects air temperature only a few centimeters into the atmosphere. During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction.
how does convection affect the environment?
Convection within the atmosphere can often be observed in our weather. For example, as the sun heats the Earth's surface, the air above it heats up and rises. If conditions allow, this air can continue to rise, cooling as it does so, forming Cumulus clouds.
how does radiation affect the environment?
Radioactive materials released into the environment can cause air, water, surfaces, soil, plants, buildings, people, or animals to become contaminated
how does air pollution harm the environment?
what is?Air pollution can damage crops and trees in a variety of ways. Ground-level ozone can lead to reductions in agricultural crop and commercial forest yields, reduced growth and survivability of tree seedlings, and increased plant susceptibility to disease, pests and other environmental stresses (such as harsh weather).
how does air density change?
what is?As pressure increases, with temperature constant, density increases.
what factors affect conduction?
The process of heat conduction depends on four basic factors: the temperature gradient, the cross-section of the materials involved, their path length, and the properties of those materials.
what factors affect convection
what factors affect radiation?
Radiation dose to the patient is influenced by many factors, such as the nature and complexity of the procedure, patient, prior radiation exposure, operator, and fluoroscopic equipment.
what factors affect air pollution?
what is?
Sunshine, rain, higher temperatures, wind speed, air turbulence, and mixing depths all affect pollutant concentrations.
what factors affect air density?
what is? The mass of atoms, their size, and how they are arranged determine the density of a substance.