Geography
The area marked brown colour on the map given above is referred to as the Pacific Ring of Fire. Why is it so called?
Answer
The Pacific Ring of Fire is near the earthquake belt around the young fold mountains. It is called so because over 80% of the total number of active volcanoes are concentrated in this region. Among these are included 40 active volcanoes in Andes, over 100 in the Philippines, 70 in Indonesia and 40 in Japan.
Related Questions
……………… are also known as Thermal Springs.
- Hot springs
- Geysers
- Volcano
- Caldera
Assertion (A): The lava and ash deposited during an eruption breaks down to provide valuable nutrients for the soil and thus create fertile soil.
Reason (R): Agricultural fields are covered with layers of volcanic ash and dust making them unsuitable for cultivation.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
What is a volcano? Give one example.
What is the difference between magma and lava?