WEATHERING
What is formed from large rocks in the process of weathering?
Sediment
In erosion, what is sediment doing? Falling off, moving, or dropping?
Moving
Place these three in the order in which they occur:
Erosion Deposition Weathering
Weathering
Erosion
Deposition
If I want to protect my bicycle from chemical weathering, where should I put it? A dry basement... Or outdoors in the humid Georgia rain and heat?
A dry place to prevent rust!
If a jagged, sharp, large rock falls downhill and into a river, how is it likely to be different in five years?
Smooth, round, smaller
What causes chains (and our Georgia clay) to turn reddish brown?
Rust
Although tectonic plate boundaries can cause these landforms, erosion by water may also be responsible! What is ONE of these landforms?
Canyons or Valleys
In deposition, what is sediment doing? Being removed from rock, moving, or dropping?
Dropping out
A plant is minding its own business and busts through a sidewalk like the Kool-Aid guy. What type of weathering is that?
Mechanical/physical
What formed the Grand Canyon?
Erosion by water
What is it called when rocks or sand (usually in wind or water) scrape against other rocks and weather them?
Abrasion
What are the FOUR main agents of erosion?
Water, wind, gravity, ice
What are beaches made of (name TWO of the four)?
What type of weathering is caused by ice?
Mechanical weathering (ice wedging)
If a statue's face looks a little less clear than it used to, what could have caused that?
Acid precipitation
Turns out, plants are pretty strong. What is the name of the process in which a plant breaks open rock or concrete?
Root wedging
What landforms can be caused when slightly acidic groundwater erodes limestone away?
Caves
Name one landform created by deposition
Beach or
Deltas or
Floodplains/Marshes
This type of weathering causes changes in composition AND appearance
Chemical
The Rocky Mountains and the Appalachian Mountains were formed at different times. If the Rockies are more jagged and the Appalachians are more smooth, which do you think is older?
Appalachians are older--they have experienced more WEATHERING.
Temperature change
Pressure change
Wind/water/gravity
Plant actions
Animal actions
Name ONE factor that impacts how a stream erodes sediment.
Gradient or
Load or
Discharge
When does deposition occur?
It occurs when the agent of erosion SLOWS DOWN or LOSES ENERGY
What type of weathering is caused by moss and lichen?
Chemical weathering
Burrowing animals are pretty cute, but they may be responsible for THIS type of weathering...
Physical/mechanical