Greenhouse effect
Greenhouse Effect
The Greenhouse Effect (pronunciation: /ˈɡriːnhaʊs ɪˈfɛkt/) is a natural process that warms the Earth's surface. The term originates from the mid-19th century, with the word 'greenhouse' referring to a building made of glass, used to protect tender plants from cold weather, and 'effect' meaning a change which is a result or consequence of an action or other cause.
Process
When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by Greenhouse Gases. These gases include Carbon Dioxide, Methane, Nitrous Oxide, and Water Vapor. They occur naturally in the Earth's atmosphere, but human activities, such as burning fossil fuels and deforestation, have increased their concentrations.
Impact
The Greenhouse Effect is essential for life on Earth, as it maintains the planet's temperature at a level necessary for human life, plants, and animals. However, an enhanced Greenhouse Effect can lead to Global Warming and Climate Change, causing a variety of environmental issues.
Related Terms
- Global Warming: An increase in the Earth's average surface temperature due to a build-up of greenhouse gases in the atmosphere.
- Climate Change: A long-term change in the Earth's climate, or of a region on Earth, which is often linked to an increase in global average temperatures.
- Carbon Dioxide: A colorless, odorless gas produced by burning carbon and organic compounds and by respiration.
- Methane: A colorless, odorless flammable gas which is the main constituent of natural gas. It is the simplest member of the alkane series of hydrocarbons.
- Nitrous Oxide: A colorless non-flammable gas, with a slight metallic scent and taste.
- Water Vapor: The gaseous phase of water, which is formed when water boils or evaporates.
External links
- Medical encyclopedia article on Greenhouse effect
- Wikipedia's article - Greenhouse effect
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