C. Match the following.
Weathering Process
Description
a | It involves reactions between
ocks and hydrogen present in the air
Thermal action
certain d e
the air os
b.
Rocks containing calcium carbonat
corrosion to form cavities, groove
carbonate suffer
ities, grooves, sinko
Ordidation
caves.
C
na contractions
It causes alternate expansion and cont
rocks during day and night.
Carbonation
Soluble minerals such as rock salta
silica are washed away in water, creatie
inside the parent rocks.
rock salt, gypsum and
water, creating pores
Hydration
5.
Solution
Iron in rocks react with atmospheric oxyz
form iron oxide or rust, which changes the co
of the rocks to a reddish-brown.
es the colour
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