Question

From the hills, river-beds or the land in your vicinity, collect rock specimens of different types, shapes, colours, etc. Observe the rock specimens and note down the following.

• Place where the rock was found.
• Colour of the rock.
• Spots on the rock and their colour. 
• Weight of the rock (estimated; heavy/light). 
• Hardness of the rock (hard I brittle/medium). 
• Structure of the rock (Uniform grains/layers/hollowness). 
• Porosity of the rock (porous/non-porous).

Answer 1

Rock Specimen	Place where found	Colour	Spots and their colour	Weight	Hardness	Structure	Porosity
1	Hill area	Dark grey	Small white spots	Heavy	Hard	Uniform grains	Non-porous
2	River bed	Brownish-grey	Light brown spots	Medium	Medium	Rounded and smooth	Non-porous
3	Roadside/field	Reddish-brown	Black and white spots	Heavy	Hard	Coarse grains	Non-porous
4	Near a stream	Light grey	Few dark spots	Light	Brittle	Layered	Slightly porous
5	Hill slope	Black	No distinct spots	Heavy	Hard	Fine and uniform	Non-porous