Effects of Volcano

Volcanic eruptions are the one of the earth’s most dramatic and violent agents of change.

These eruptions destroy life and property of people.

These can change the existing landforms in to new one and also can destroy the entire landform around a volcano.

Volcanic eruptions have both constructive and destructive effects.

Constructive effects of volcanoes

1. Many types of landforms create due cooling and solidification of lava in the surface of the earth.

These include volcanic plains, volcanic plateaus and volcanic mountains.

Sometimes these volcanic constructions are profitable for man.

For example volcanic plains are very fertile for agricultural activities.

Example given: in Java and in North-west Deccan

2. All precious stones formed within volcanoes.

For example: diamonds in South Africa

Nickel deposits in Sudbury in Canada.

3. Geysers and hot springs which are formed due to volcanic activity are very useful to man.

An example of geyser is the ‘Old Faithful’ geyser in Yollowstone National Park in USA.

Manikaran in Kullu valley of Himachal Pradesh is an excellent example of hot spring.

These geyser and hot springs contain sulphur and other useful minerals which are very good for health specially for curing certain skin diseases.

4. The crater lakes which are formed in the volcanic craters serves as the source of Perennial River.

For example: Lake Volcanic in South Africa

5. Many volcanic spots become the areas of scenic beauty.

These areas attract lots tourists every year.

For example: Santorini in Greece

Mount Fuji in Japan

6. Sometimes remnants of volcanoes preserve traces of old civilizations.

Eg.: an old city found in Pompeii in Italy which was destroyed due to the eruption of Mt. Vesuvius.

Destructive effects of volcanoes

1. Newly volcanic erupted areas are absolutely barren.

The water holding capacity of the ground is very low. So no human activity is possible here.

2. Volcanic eruptions cause extreme damages to the surroundings.

It forces the peoples to leave their house and land, sometimes forever.

3. Since 1700 AD more than 260,000 peoples killed by volcanic eruptions.

These eruptions destroy entire cities, forests and local economies for months or years.

4. Tsunami is produced by a earthquake or can be a result of volcanic eruption.

These tsunami causes severe damages to the coastal cities.

Revision

Volcanic eruptions are the one of the earth’s most dramatic and violent agents of change. it destroy life and property of people and change landforms.

Volcanic eruptions have both constructive and destructive effects.

The End