weathering Flashcards
weathering
the break down of rocks and other substances,(remains in same place)
mechanical
physically broken down to smaller pieces
chemical
break down through chemical changes
ice wedging
water freeze, expands, form cracks
abrasion
get smoother by friction or water, edges fall off
animal actions
scrapping rocks or bring up to surface for other weathering.
plant growth
roots break rocks apart
hydrolysis
WATER dissolves minerals in rock
oxidation
water combined with iron, rust weakens rocks.
carbonic acid
carbon dioxide dissolves in rain water, easily break rocks like marbles or limestone.
living organisms
moss or fungi, bacteria producing weak acids dissolves rock around roots
acid rain
over burning of fossil fuel which reacts with water vapor in clouds, producing acid -rapid weathering
climate
气候
type of rock
how fast a rock dissolves
