Page 80 - Carvaan Science-2

Gem Stones : These are very hard WOW!
minerals. These are cut in various shapes

and polished. Polished gem stones are very Talc is softest mineral !
beautiful.

Pictures of some gem stones in their original forms are given below:

Raw Ruby Raw Emerald Raw Garnet

Pictures of some gem stones after being cut and polished :

Ruby Emerald Garnet

! Rocks are the hard and solid parts of the Earth.

! Hills and mountains are made of rocks.
! Hard rocks are used for making buildings and statues.
! Soft rocks are used for making tiles and writing slates.

! Minerals are useful substances found inside the Earth.

! Gold and silver are used to make jewellery.

Check Yourself

A. Tick ( ) the correct option : Critical Thinking

1. Hard rocks are mostly used in _________________ .
(a) buildings (b) statues (c) toys

2. The Red Fort is built of _________________ .
(a) red sandstone (b) yellow sandstone (c) white sandstone

80 Science-2