mechanical weathering Flashcards
1
Q
What is freeze thaw action
A
(draw diagrams)
- by day water collects in rocks in the cracks
- at night the water freezes and expands by 10 percent
- repeated freeze thaw action causes the rocks to shatter. it falls to the bottom of the slope as scree
2
Q
wht is the use, colour, texture, location and formation of basalt
A
road building grey black giants causway smooth basalt cools very quivkly when lava reaches the surface
3
Q
what is the use, colour texture, location, and formation of granite
A
gravestnes fireplaces pink green white coarse wicklow mts granite cools over millions of years and the minerals in the lava form very large crystals
4
Q
what is the colour, texture, use, formation and location of sandstone
A
brown red grainy macgillicuddys monuments large amount od sand worn away from earths crust. sand built up over time and compressed and cemented together
5
Q
what is the colour , texture, location, use and formatio n of sandstone
A
cream grey coarse the burren building roads remains of dead sea creatures and shells and fish bones pile up on the sea bed. over millions of years they are compressed and cemented together
