Question

Collect rock specimens from your surroundings and also during your travels. Classify them with the help of your teacher. Make a small museum of rocks for your school and place your specimens there. Keep a note of the place from where you have collected them. (See a specimen display on page 126 of Part-4.)

Answer 1

For this activity, I collected different rock specimens from places around my home and during travel. I observed their colour, texture, hardness, weight, grain size, layers and porosity. With the help of my teacher, I classified them into igneous, sedimentary and metamorphic rocks.

Sr. No.	Rock specimen	Type of rock	Place collected from	Main features
1.	Basalt	Igneous	Hill area/roadside in Maharashtra	Dark grey or black, hard, compact and fine-grained.
2.	Granite	Igneous	Rocky area/construction site	Light coloured with black, white and pink mineral grains; very hard.
3.	Sandstone	Sedimentary	River bed/rocky slope	Brown or reddish, grainy and often seen in layers.
4.	Limestone	Sedimentary	Quarry/hilly region	Whitish or grey, comparatively soft and may contain fossils.
5.	Laterite	Sedimentary-type weathered rock	Konkan region, especially Ratnagiri or Sindhudurg	Reddish-brown, porous and rich in iron.
6.	Marble	Metamorphic	Building-stone shop/travel specimen	White or coloured, hard, smooth and can be polished.
7.	Slate	Metamorphic	Hilly area/stone market	Dark grey, fine-grained and splits into thin sheets.