If you are looking for TN Board Class 8 Geograhy Unit 1 Rocks and Soil then you are at the right place. Here we are providing solutions as well as additional QA / Important Notes.
I Choose the correct answer
Which of the following is known as sphere of rocks
- Atmosphere
- Biosphere
- Lithosphere
- Hydrosphere
World soil day is observed on
- 15th August
- 12th January
- 15th October
- 5th December
Fossils are found in …….
- Sedimentary rocks
- Igneous rocks
- Metamorphic rocks
- Plutonic rocks
The top layer of soil is called as
- organic layer or humas
- topsoil
- subsoil
- bedrock
Ideal soil for growing cotton is
- Red soil
- Black soil
- Alluvial soil
- Mountain soil
The major components of soil is
- Rocks
- Minerals
- Water
- All the above
Which one of the following is the most widespread most and productive category of soil
- Alluvial soil
- Black soil
- Red soil
- Mountain soil
II Fill in the blanks
- Scientific study of rocks is called ………[petrology]
- ………soil is highly suitable for millets cultivation.[Red soil]
- The “skin of earth” is ………[soil]
- ………is the kind of metamorphic rock using which Taj Mahal was built.[Marble]
- …….is known as the primary rocks.[Igneous rocks]
III State whether the following statements are true or false
- Igneous rocks are called primary rocks.[True]
- Slate is formed from shale.[True]
- Red soil is formed by the process of leaching.[False – Laterite soil]
- M-sand is used as alternative for natural sand in construction.[True]
- Volcanic mountains are covered with sedimentary rocks.[False-Igneous Rocks]
IV Match the following
A. Granite 1. Bed rock
B. Soil layer 2. Plutonic rock
C. Barren island 3. Strip farming
D. Soil conservation 4. Active Volcano
- A B C D
- 2 1 4 3
- 2 1 3 4
- 4 3 2 1
- 3 4 2 1
2)
A. Basalt 1. Anthracite
B. Limestone 2. Extrusive igneous
C. Coal 3. Metamorphic rock
D. Gneiss 4. Sedimentary rock
- A B C D
- 2 4 3 1
- 2 4 1 3
- 3 1 2 4
- 3 1 4 2
