SS3 Second Term Geography Lesson Note – Climatic Change

The content is just an excerpt from the complete note for SS3 Second Term Geography Lesson Note – Climatic Change. Check below to download the complete DOCUMENT

WEEK: 5  

TOPIC: CLIMATIC CHANGE

CONTENT:

• CAUSES OF CLIMATIC CHANGE
• CONSEQUENCES OF CLIMATIC CHANGE
• REMEDIES TO CLIMATIC CHANGE

SUB TOPIC 1: CAUSES OF CLIMATIC CHANGE

There are many causes of climatic change. They include (i) greenhouse effect (ii) Ozone layer depletion (iii) cloro-foro carbon (CFC) gases (iv) carbon emission (v) deforestation (vi) gas flaring

1. GREENHOUSE EFFECT

Long wave radiation from the sun is being shielded by the activity of carbon monoxide and chloro-foro carbon (CFC) mixing with dust in the atmosphere. This result in concept called greenhouse effect where long wave radiation is being shielded beyond expectation, resulting in prolonged heating of the environment thus changing the climate

2. OZONE LAYER DEPLETION

Smoke from automobile (e.g. vehicles), industries, burning of coal/wood etc move into the atmosphere as carbon monoxide. Emission from certain types of air conditions and refrigerators also rich the atmosphere as Chloro-foro carbon (CFC). These gases mix up with dust in the atmosphere and acts as melting agents to the ozone layer which shields the earth from ultra-violet rays from the sun. This increases the earth’s temperature, resulting in changes in other climatic elements. This changes the climate of places in the earth.

3. CHLORO-FORO-CARBON (CFC)

This is simply a kind of gas that is emitted from industrial works, such as air conditioners that are not c.f.c. free, refrigerators etc. It contacts carbon monoxide and dust and causes a shield that can hinder the re-radiation of heat back to space; hence resulting in greenhouse effect and also depletion of the ozone layer.

This results in acid rains and increased temperatures of places thereby changing the climate.

4. CARBON EMISSION

This refers to the released of smoke through vehicles and other automobiles, bush burnings, through other industrial machines etc. into the atmosphere as carbon monoxide. This mixes with chloro-foro-carbon and dust to increase atmospheric heat, thereby leading to greenhouse effect, ozone layer depletion, acid rain etc., hence affecting the climate

5. DEFORESTATION

Deforestation refers to the indiscriminate destruction of forest or felling of trees. This exposes the land surface to erosion,

To gain full access to the note: DOWNLOAD FILE