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CHAPTER-5: ROCKS AND MINERALS
TOPIC: IGNEOUS ROCKS

Objective questions

1. Fill in the blanks

a) Igneous rocks are formed when the liquid hot rock called………………comes on the surface of Earth.
b) As the lava rises it……………………………. and …………………………………..either above or below the
surface of Earth.
c) Igneous rocks which are formed above the surface is called……………………………………igneous rocks.
d) Igneous rocks which are formed below the surface is called……………………………………igneous rocks.
e) The examples of Igneous rocks are……………………………… and ……………………………………….

2. Give one word.
a) I am a rock which is formed when I cool inside the volcano…………………
b) I am a polished rock, earlier people used to make weapons out of me…………………….
c) I am a rock; Doctors use me to polish your teeth………………………….
3.Multiple choice
a) Obsidian rocks are used to make……………….

i) Spade
ii) Floor
iii) Statues

b) Example of extrusive igneous rocks are

i) Diorite and Granite
ii) Granite and Pumice
iii) Pumice and Basalt
iv)

Subjective questions

1. Fill the Table

Sl.no. Picture of stone Name and its uses