Skip to content
Login Register

#atmosphere

6 public questions tagged with this topic.

Environmental Effects - Ozone, Greenhouse and Safety

The ozone layer protects the Earth by absorbing which type of electromagnetic waves?

**Greenhouse effect** IR absorbed by CO₂, H₂O, CH₄, warming Earth, excessive greenhouse due to fossil fuel burning raises temperature, EM waves role: Sun visible reaches surface, Earth emits IR trapped, altering energy balance, safety concern for climate change. The document mentions that the ozone layer absorbs most ultraviolet (UV) radiation, protecting life on Earth. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Ultraviolet rays, illustrating EM wave transverse nature and Maxwell's displacement current concept.

Ref: NCERT > Physics Book > Electromagnetic Waves > Environmental Effects - Ozone, Greenhouse and Safety

View Details
Environmental Effects - Ozone, Greenhouse and Safety

What is one environmental concern related to the depletion of the ozone layer mentioned in the document?

**Ozone absorbs UV** protecting life, depletion by CFCs, halons produces Cl· + O₃ → ClO + O₂, ClO + O → Cl· + O₂, catalytic cycle, one Cl destroys thousands of O₃, Montreal Protocol bans CFCs, UV increase harmful. The document mentions that the depletion of the ozone layer by chlorofluorocarbons (CFCs) allows more UV radiation to reach Earth, posing health risks. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Increased UV radiation exposure, illustrating EM wave transverse nature and Maxwell's displacement current concept.

Ref: NCERT > Physics Book > Electromagnetic Waves > Environmental Effects - Ozone, Greenhouse and Safety

View Details
Ecosystem Cycles

Which cycle has equal lithospheric and atmospheric phases?

“Sulfur” for which cycle has equal lithospheric and atmospheric phases. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Ecosystem processes are constrained by energy conservation and by the cycling of matter. Energy enters mainly through primary production, is lost as metabolic heat at every transfer, and therefore cannot be recycled in the way that carbon, nitrogen, phosphorus, or water can. The remaining alternatives—“Carbon”, “Phosphorus”, “Nitrogen”—refer to different states, processes, or sca

Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 18

View Details
Applied Ecology

What is the most abundant gas in the Earth's atmosphere by volume?

Dry air consists of about 78.08% nitrogen by volume, approximately 20.95% oxygen, 0.93% argon, and only about 0.04% carbon dioxide. Nitrogen therefore dominates the atmosphere quantitatively. Its abundance reflects the stability of molecular nitrogen, whose strong triple bond limits rapid biological or chemical removal, although nitrogen-fixing organisms make part of it biologically available. Atmospheric inversions can trap contaminants near the surface, while wind, turbulence, precipitation, and chemical transformation determine their eventual distribution and removal. At organismal level, r

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

View Details