geo Flashcards
(28 cards)
what is weathering
when rocks are broken down
rocks weather in 3 ways
physical chemical and biological
physical
breakdown in a physical way
2 physical weathering
exfoliation and frost shattering
igneous
when melted rock cools
chemical weathering
chemicals in air and water reacts with chemical substance in rocks
how is dolomite and limestone weathered
carbon dioxide dissolves in rain water carbonic acid reacts with calcium carbonate in rock
soluble
dissolves in liquid
biological weathering
action of living things
human affect weathering in 2ways
mining and quarrying pollution that makes acid rain
metamorphic
change over time
erosion
rocks and soil particles are worn away
gradient
steepness of a slope
interlocking spurs
land that sticks out into valley from any side
course
path of river that flows down into sea
flood plain
land covered by water in times of flood
meanders
huge bend in a river
delta
land shaped like a triangle
spits
thin pieces of land that sticks out
into sea
bars
masses of sand that forms across the mouth of a river
2 kinds of glaciers
valley glaciers and continental glaciers
striations
scratches in rock
u- shaped valleys
when glaciers move up and down and makes valley wider
horns
more than one glaciers on mountain
