Environmental Science Chapter 1 MCQ

Study Notes

Abiotic Environment: Refers to non-living physical and chemical components of an ecosystem. Examples include:
- Air
- Water
- Soil
- Excludes living organisms like plants.
Chief Source of Energy:
- The primary source of energy in the environment is the Sun.
- Other natural phenomena like fire, moonlight, and stars contribute less energy.
Energy Return to Atmosphere:
- Energy is returned to the atmosphere primarily in the form of heat.
- Metabolic energy and potential energy are also involved but are secondary.

Hydrosphere Impact Examples:
- Air pollution is a common impact associated with development activities.
- Other types of pollution include soil, noise, and water pollution.
Zones of the Environment:
- The Zone consisting of air, water, and soil is known as the Hydrosphere.
- Other regions include the Atmosphere, Biosphere, and Lithosphere.

Social Environment Components:
- Includes traditions and cultural aspects of a society.
- Critical ethical and cultural elements shape social interactions.
Physical Environment:
- Often referred to as abiotic environment.
- Contains both physical (non-living) and biotic (living) components.
Categories of Environmental Types:
- Abiotic Environment: Non-living components.
- Biotic Environment: Living organisms interaction.
- Man-made Environment: Altered or built environments fostered by human activity.
- Psychological Environment: Subjective perception of the environment.

Ozone Layer:
- The formation process mainly involves photochemical reactions.
- Ozone protects the Earth from harmful UV radiation, crucial for sustaining life.

Oxidation and Reduction Reactions:
- Oxidation involves the loss of electrons, while reduction involves gaining electrons.
- These reactions are fundamental in various environmental processes, such as in the formation of ozone and other atmospheric interactions.

Each question set provides a distinct focus:
- First set focuses on environmental definitions and energy sources.
- Second set emphasizes pollution impacts and environmental zones.
- Third set highlights different environmental types and conditions.