Porosity, Permeability, Capilarity
Glacier
Rivers & Streams
Weathering, erosion, deposition
Randoms
100
Define porosity
Amount of pore space
100
What is a glacier made of?
snow/ice/water
100
What shape valleys do rivers carve?
V shaped valleys
100
What is the minimum rate of flow at which a stream of water can maintain the transportation of pebbles 1.0 cm in diameter.
50 cm/s
100
What shape valley does a river create? why?
V-shaped. Downcutting dominant
200
If the ground is impermeable, what does this mean?
water wont infiltrate. more runoff. etc.
200
What shape is the valley created by a glacier?
U shaped
200
Where does erosion occur in a meandering stream?
On the outside of the curve.
200
Where is the water velocity the greatest in a meandering stream? Why?
Outside of the meander. It's where the water has more area to cover
200
What are the source and mouth of a river?
The start (origin) and the end (where it flows into)
300
What size soil will have the best capillarity?
small (like clay)
300
What is the primary source for the movement of a glacier
gravity
300
What is the largest size sediments that can be carried by a stream going 100 cm/s?
Pebbles
300
What 2 spheres must rocks be exposed to for weathering to occur?
atmosphere and hydrosphere
300
What direction does the Genesee River flow? Explain
North. plateau to lowlands
400
You have 2 beakers, one with 500 mL of round sand, the other 500mL of round pebbles, which has more porosity?
same porosity
400
Describe two things that could cause glacier retreat (melt)?
warmer temperatures, less precipitation
400
What is the fan shaped deposit at the end of a stream?
Delta
400
Chemical weathering occurs most rapidly in this type of climate
moist and warm
400
What's the difference between chemical and physical weathering? Give an example of each
Chemical weathering- changes chemical composition. ex:oxidation, hydration, carbonation Physical weathering- only changes the appearance (size, shape). ex: frost action, abrasion
500
Which will be more permeable, glacial till or lake deposits?
Lake deposits because its sorted. Water can get through sediments easier because there are not little bits to fill up the empty space.
500
What features can be found in New York that shows it was once covered by a glacier?
kettle lakes, drumlins, esker, moraine, erratic, etc.
500
Draw the deposition pattern of a stream
Large on bottom and smaller on top. (Sorted by size)
500
How are seds. deposited as a stream or river enters a large body of water. Explain why it occurs and draw
Water velocity slows, heavy particles drop first. Smaller ones are able to be transported further out.
500
How are young rivers different from mature rivers?
Young rivers are faster, have more rapids, waterfalls. Mature rivers are slower, more meanders, ox bow lakes, etc.
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