Atmospheric Phenomena and Pollution: Understanding the Dynamics of Our Environment
Atmospheric Phenomena
Cold Front
A cold front occurs when a cold air mass approaches a warmer air mass. The denser cold air generates a front and moves beneath the less dense warm air. Cold fronts can cause atmospheric disturbances such as thunderstorms, squalls, tornadoes, high winds, and snowstorms. As the cold front passes, it brings dry conditions.
Polar Front
A polar front forms when air masses from subtropical anticyclones collide with cold air from the poles. These fronts create a series of chains.
Read MoreChemical Elements and the Water Cycle: A Comprehensive Guide
Chemical Elements
A chemical element is a substance that cannot be broken down into simpler substances. There are over 100 chemical elements, but only 90 occur naturally. The remaining elements have been created by humans in nuclear reactors.
Each element has a unique name and symbol. The symbol may be a capital letter, a capital letter followed by a lowercase letter, or derived from the element’s name.
The ability of elements to combine with each other to form different substances is called valence.
Read MoreEarth’s Structure, Plate Tectonics, and Earthquakes
Earth’s Structure
The materials that make up the planet are arranged in layers according to their densities: atmosphere, hydrosphere, crust, upper and lower mantle, and outer and inner core.
Plates
A plate is a rigid structure, called the lithosphere, which contains rock materials of the upper mantle and crust, both continental crust and the oceanic crust. These lithospheric plates have a thickness of about 100 km and float on the mantle.
The continuous movement of the plates is due to the existence
Read MoreGlossary of Hydrological and Vegetation Terms
River
Natural water current, continuous and more or less abundant, which flows into another river, a lake, or a sea.
Drought
Period during which a stream of water reaches its lowest flow.
Flood
A moment of maximum river flow, which is usually an abnormal increase with catastrophic effects.
Nival Regime
Fluvial type of rivers whose flow is determined by the input of water from melting snow. Corresponds to mountain rivers that reach their maximum during the spring thaw, and their minimum in winter when water
Read MoreUnderstanding Precipitation, Runoff, and Groundwater Systems
Precipitation
Changes in air pressure and temperature associated with the movement of air masses cause air to become saturated with water vapor. This vapor then condenses around tiny particles in the air, such as pollen, dust, sea salt, and volcanic ash, leading to precipitation.
Main Controls of Atmospheric Precipitation:
- Collision of Air Masses: Most precipitation occurs when large masses of warm, moist air collide with cold air masses, such as in cyclones and hurricanes.
- Convection: Heat from the
Air Pollution: Sources, Effects, and Solutions
AIR
Air is a set of gases that form the atmosphere, essential for life on our planet. It is a natural resource in constant exchange within the biosphere.
AIR POLLUTION
Air pollution refers to the contamination of the air and includes acoustic contamination. It involves the presence of materials or forms of energy in the air that pose risks, harm, or serious discomfort to people, goods, and the environment.
SOURCES OF POLLUTION
There are two main types of pollution sources:
- Natural: These sources include