sample exam questions Flashcards
Bent tree trunks on a slope are indicative of
creep
How do glaciers move?
faster in the middle and slower at the edges
Sediment deposits that form when stream flow abruptly changes
from a confined channel to being unconfined are called
alluvial fans
The colour of a soil indicates :
composition and chemistry of soil
The resources plants need to photosynthesize include:
CO2, H2O, nutrients, and sunlight
Soil parent material…
includes weathered bedrock
Soil parent material…
includes weathered bedrock
list a driving force and a resisting force that
affect slope stability, then discuss the role of slope angle on these forces and mass movement.
Driving force: gravity
Resisting force: friction or cohesion
As slope angle goes ^, gravity force ^ , and resisting force V
When driving force > resisting force then mass movement will occur
List three differences between meandering and braided streams.
Meandering has lower slope, more suspended load and finer size
particles.
Describe two landforms associated with valley glaciers.
Any two of the following with their proper description
Horn: Ridges between glacial valleys become narrow forming knife-like features (aretes) when several meet to form at point it is called a horn
Moraine: material left behind by a moving glacier. This material is usually soil and rock.
Cirque: A scooped out landform near the head of the glacier where erosion is highest
Tarn: are lakes that form in glacially-carved cirques. They are often dammed by moraines.
Rank these particles from smallest (1) to largest (4)
- Colloid
- silt
- sand
- gravel