General Knowledge - Environmental Science

Environment Science in academics has emerged as a new discipline. Human race did massive damage to environment and now we need to take corrective measures to keep it healthy and habitable.  Everyone should know and learn about Environment. To measure your environmental awareness, in competitive examinations questions are asked. Here are lessons about Environmental Science useful for competitive examinations like UPSC Exam, Bank PO Exam, SSC Exam, Police Service Exam, Railway Recruitment Exam, Scholarship Test, and Admission Test Etc.

Environmental Science: An Overview 

Some Environmental Facts

Energy

Waste

Ozone Layer Depletion

Glossary – Environmental Science

Abundance – This refers to the number or amount of something found in the environment, generally in plenty.

Acid precipitation- This refers to the acidic rain, snow, or dry particles set down from the air owing to increased acids released by anthropogenic or natural resources.

Acids- This refers to the substances that liberate hydrogen ions (protons) in water.

Some Environmental Facts

The biggest energy source on the surface of the earth is	Solar radiation
The acid found in soil is	Humic acid
Burning of fossil fuels releases	Carbon-di-oxide
The place referred to as the Valley of Death is	Cubatao in Brazil

Energy

The energy is the ability to do work. In India 70% population resides in rural areas; thus supplying energy to villages is vital to maintain pace in development. 21% of villages and nearly 50% rural households are yet not electrified.

The per capita consumption of energy was 4816 KWH in 2010-11, according to Central Statistics Office.

Disaster

Disaster is a sudden, calamitous event bringing great damage, loss, and destruction and devastation to life and property. The damage caused by disasters is immeasurable and varies with the geographical location, climate and the type of the earth surface/degree of vulnerability. This influences the mental, socio-economic, political and cultural state of the affected area.

Waste

Waste, or rubbish, trash, junk, garbage, depending on the type of material or the regional terminology, is an unwanted or undesired material or substance. It may consist of the unwanted materials left over from a manufacturing process (industrial, commercial, mining or agricultural operations,) or from community and household activities. The material may be discarded or accumulated, stored, or treated (physically, chemically, or biologically), prior to being discarded or recycled. It is also used to describe something we use inefficiently or inappropriately.