Question

Which of the following illustrates mechanical weathering?
A. carbonic acid weathers marble and milestone
B. as plants grow they produce weak acids that slowly dissolve rock
C. oxidation causes weathering in rock
D. repeated freezing and thawing rocks causes weathering
Ill give medals!

Answer 1

ok so Physical weathering, also known as mechanical weathering, is the class of processes that causes the disintegration of rocks without chemical change. The primary process in physical weathering is abrasion (the process by which clasts and other particles are reduced in size). However, chemical and physical weathering often go hand in hand. Physical weathering can occur due to temperature, pressure, frost etc. For example, cracks exploited by physical weathering will increase the surface area exposed to chemical action, thus amplifying the rate of disintegration.

Answer 2

so what letter?

Answer 3

i cant give answers

Answer 4

oh k

Answer 5

ill give u a medal!

Answer 6

thx

Answer 7

http://www.kidsgeo.com/geology-for-kids/0066-mechanical-weathering.php
this website has good info

Answer 8

did u get it?

Answer 9

thx @olipop2002

Answer 10

np i hope u get it right!

Answer 11

hehe thX!