Frost wedging occurs because rocks becomes brittle when they freeze and water occupies more volume than ice.
Frost weathering is a collective term for several mechanical weathering processes triggered via stresses created by using the freezing of water into ice. The term serves as an umbrella term for a ramification of techniques which include frost shattering, frost wedging and cryofracturing.
Frost wedging takes place while water filling a crack freezes and expands (because it freezes, water expands 8 to 11% in volume over liquid water). The expanding ice imparts a extremely good amount of pressure against the rock (as plenty as 30,000 kilos/rectangular inch) and wedges open the crack.
Frost wedging takes place in locations which have the right temperatures to freeze water after which soften water. This normally happens in polar areas and mid latitude mountains wherein daylight can soften water throughout the day and refreeze overnight when temperatures drop.
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Answer:
5
Explanation:
each song costs: 9.95/12 ~ 0.82 each
so with 4.15 u can buy ~ 5.06 songs
so the answer is 5
The astronomers provided a new way of looking at things through exploration. Their example was followed by others who soon began exploring, leading the world into the Renaissance.
Answer:
Two women can be selected from 29 in 29C2 ways.
Explanation:
plato
Fire is important because it cooked food, provided light and provided heat
