All minerals are ................................., ..........................substances whick occur naturally
inorganic, sold
True or False. Some minerals can have just one chemical component like graphite
true
Rocks are formed by ........................ or ................. types of minerals
one or more
Where the igneous rock came from ?
These rocks form when volcanoes erupt and the magma or lava cools down and solifies
Sedimentary rocks are made of ..................... of other rocks
fragments
Sometimes the action of ................................ can expose igneous rock and metamorphic rocks at the surface
volcanoes
True or false.All minerals are organic
False. All minerals are inorganic
The external part of the Earth is called the ....................
crust
The properties of minerals are ..................................... , ............................. and ....................
colour, shape and hardness
Hardness : Mineral can be ............................. or ......................
hard and soft
Based on the Mohs scale minerals go from 1 ( ....................... ) to 10 ( ........................)
softest to hardest
Some rocks such as limestone are useful in......................................
building industry
