Font size
WorksheetsCharacteristics of Air Particulates Matter
Total questions: 12
Worksheet time: 10mins
Definition of AEROSOLS
The spontaneous attachment of particles to surfaces
Particles small enough to remain suspended in the atmosphere or in other gases for long times
The laying down of particles sediment carried by wind, flowing water, the sea or ice
A cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface that limits visibility
Choose the CORRECT definition for SOOT
Fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air
A mixture of solid particles and liquid droplets found in the air
A visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface
SOOT is particles of coal and some hydrocarbons pass out of the flame zone before they can be combusted
__________ is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface
Soot
Haze
Fog
Smog
What is this phenomenon known as?
Fog
Smoke
Smog
Soot
Choose the CORRECT difference between SMOG and HAZE?
Haze is a result of industrial pollution and emissions from combustion engines while smog is a naturaly occuring event condition given a naturally occuring release of particles
Haze happens due to combustion from forest fires while smog is the emission from paddy straw burning
Haze is the he suspended aerosol particles that reduce visibility by scattering light while smog usually forms in cool, humid environments, and it contains large numbers of tiny aerosol particles that make it appear gray
Formed in the atmosphere by chemical processes that involves primary emissions
SOx, NOx, NH3
Issued directly from the sources
Primary particulates
Air pollution/ particulates change originating in human activity
Anthropic/ Anthropogenic
Particles that are 10 micrometers in diameter or smaller
PM10
Fne particles with the ability to penetrate deeper into the lungs
PM2.5
Match the following particle size distribution of particulates matter
The mass fraction of total airborne that pass through respiratory system & enter the
bloodstream
Respirable fraction
The mass fraction of total airborne particles which is inhaled through the nose and mouth
Inhalable fraction
The mass fraction of inhaled particles penetrating beyond the larynx
Thoracic fraction
Diameter of particles collected with 50% efficiency is known as (a) and diameter of a unit density sphere that would have the same settling velocity as the particle or aerosol known as (b) are usually used to express the size of a non-spherical (irregular) particle
The force that pulls two masses toward each other is the (a) while (b) is associated with relatively larger particles colliding with the interceptor due to inertia while smaller particles remain in the gas stream.
The tendency of an object following a curved path to fly outwards, away from the center of the curve is known as (a)
(a) is the random motion of a particle as a result of collisions with surrounding gaseous molecules.
When negatively charged atom is attracted towards positively charged atom and vice-versa, it is known as (a)
