Recap, Glossary

Recap

*A rock is an aggregate of one or more minerals.

* The word ‘Sedimentary’ has been derived from Latin word ‘Sedimentum’ means settling down.

* Igneous rocks are the primary rocks formed first on the earth.

 *Soil is a mixture of organic matter, minerals, gases, liquids and organisms that together support life.

GLOSSARY

1. Crust: Outermost layer of the earth புவியின்மேலோடு

2. Lava: Hot molten rock erupted from a volcano. லாவா

3. Magma: Hot fluid or semi-fluid material found beneath the earth crust. பாறைக் குழம்பு

4. Rock cycle: The continuous process of transformations of rocks from one form to another. பாறை சுழற்சி

REFERENCE BOOKS

1. Physical geography-Dr.Shanti swaroop.

2. Outlines of General Geography - By E.O. Robinson, M.A.

3. Text book in Geography for class VIII-Social science Resource and development - NCERT-New Delhi.

4. Geography for UPSC Civil Service Preliminary Examination - By Surender Singh.

5. School Atlas Book - Tamilnadu Text Book Corporation.

INTERNET RESOURCES

www.Fert.nic.in

www.greathimalayannationalpark.org

www.csmrs.gov.in

ICT CORNER

Rocks and Soils

Steps

• Open the Browser and type the URL given below (or) Scan the QR Code

• Click the ‘Begin’ button, start your rock collection

• Click Add to rock collection’ one by one

• Goto ‘identify rock types’ and play the game

Website URL:

http://www.learner.org/interactives/rockcycle/index.html