Transcript WeatheringErosion Jeopardy

Soil & Soil
Fresh Water
Conservation
Agents of
Erosion
& Deposition
Weathering
Rates of
Weathering
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
What is the break
down of rock into
smaller pieces by
physical means
called?
Mechanical
Weathering
What is the process
by which rocks
break down as a
result of chemical
reactions called?
Chemical
Weathering
Name 4 agents of
mechanical
weathering and
briefly describe
how they weather.
ice, wind, water,
gravity, plants, and
animals.
What are the 3 most
common agents of
chemical weather.
Briefly describe
each one.
water, weak
acids, air
Describe the similarity in the ways
tree roots and ice mechanically
weather rock.
Both tree roots and ice can force
cracks in rocks to expand.
What is differential
weathering?
The process by which
softer, less weather
resistant rocks wear away
and leave harder, more
weather resistant rocks
behind.
A rock will have a lower
rate of weathering when
the rock ____.
A) is in a humid climate
B) is a very hard rock
C)is at a high elevation
D) has more surface area
B) Is a very hard rock
How does surface area affect the rate
of weathering?
When the surface area increases, the
rate of weathering increases.
What type of climate
has faster chemical
weathering?
Chemical-warm,
humid
Why do mountaintops
weather faster than rocks at
sea level.
They are exposed to
more wind, rain,
and ice because of
their high elevation.
What is the dark, organic material
formed in soil from the decayed
remains of plants and animals.
humus
What is erosion?
Process by which wind,
water, ice, or gravity
transport soil and sediment
from one location to
another?
Name the soil horizons in order from
top to bottom.
Ground level (litter)
A (topsoil, humus)
B (collects dissolved nutrients from
upper layers, subsoil)
C (partially weathered bedrock)
R (bedrock)
Why is soil important? Give 3
reasons.
Houses for animals.
Stores water.
Provides nutrients for plants.
List and describe 5 methods of soil
conservation.
Crop Rotation- Rotating crops each season to replenished
needed nutrients to the soil
Contour Plowing- prevents erosion by plowing across a slope
so rows act like dams.
Terracing- prevents erosion by dividing a steep hill into a
series of flat fields.
No till farming- prevents erosion by leaving old stalks on the
land.
Cover Crops- prevent erosion by covering the ground during
harvesting seasons.
Name 3 features that can be made
from wave erosion.
Sand bar, sea cave,
sea stack, headland,
Name a feature that can be created
during wind erosion and deposition?
Sand dunes.
Why are flood plains both good and
bad for farming?
Good- fertile land
Bad- drown crops
(Erosion or Deposition) occurs along
the inside of a bank of the bend in a
river, where water flows slower.
(Erosion or Deposition) occurs along
the outside bank of the bend in a
river where the water flows faster.
Deposition occurs along the inside of a
bank of the bend in a river, where water
flows slower.
Erosion occurs along the outside bank of
the bend in a river where the water flows
faster.
Compare AND contrast
deltas and alluvial fans.
Compare1. fan shaped
2. materials deposited by a
stream
Contrast1. Delta- form in body of water
2. Alluvial fan- form on dry land
What are the 4 agents erosion and
deposition?
1.
2.
3.
4.
Wave
Wind
Ice
Gravity
What is mass movement?
The downhill movement of eroded
materials.
What do glaciers do as they flow
over land?
They carve out
valleys and abrade
rocks that they
move over.
What agent of erosion causes
mudflows, landslides, and rock falls?
gravity
How does an oxbow lake form?
When sediment builds up
at the mouth of a meander
in a river.