Download Weathering — the breaking down of rocks, soils, and minerals in the

Vocabulary to KNOW:
What is the salinity of water?
How much salt is in the water.
1) Salinity
2) Sediment
3) Turbidity
How is the egg experiment an example of salinity?
Salinity is how much salt is in water. Eggs sink in
freshwater because the egg is more dense than the water.
When you add salt to the water, the salinity increases.
When salinity increases, the density of the water increases
and the egg is less dense than the water so it floats.
*Describe the SEDIMENTS river:
Streams break down rock and soil which are carried along
downstream. Runoff from nearby fields can also carry
sediment into streams and rivers.
*Turbidity:
What does turbidity tell us about the river?
Turbidity tells us how clear or cloudy the water is.
What does the very brown water indicate?
The brown water indicates the presence of a lot of fine dirt
particles.
Why is salinity important?
Tells us how much fresh and salt water has mixed. Density
of water determines how it mixes. Impacts chemical
processes and biotic factors.
_________________________________________________
Weathering — the breaking down of
rocks, soils, and minerals in the Earth’s crust
into smaller pieces
Physical Weathering — breakdown of rock into
smaller pieces without changing it chemically
Types:
1.
2.
3.
4.
5.
Frost (Frost wedging & Frost Heaving)
Plant Roots (Root Wedging)
Friction and repeated impact
Burrowing of animals
Temperature changes
Chemical Weathering — break down of rock
through chemical changes
Types:
1.
2.
3.
4.
5.
Dissolving by water
Oxygen (oxidation)
Carbon dioxide
Living and dead organisms
Acid rain
What is KARST topography?
A type of landscape in rainy regions where
chemical weathering can cause disappearing
streams, caves, and sinkholes
Examples:
Disappearing streams, caves, and sinkholes
EROSION: Movement of rocks and soil by
water, wind, or ice.
1.) Water — caused by waves, rivers, streams,
and runoff
A. Mass Movement — landslides, mud-
slides, slump, creep, and debris flow
2.) Ice — caused by glaciers
3.) Wind — caused by sandstorms (particles
blowing in the wind)