Define "moraine." What are the types of moraines?
What will be an ideal response?
Moraines are ridges of poorly sorted material deposited by a glacier. End moraines form at the leading snout of the glacier, with many parallel moraines marking different positions of the glacier over time. Lateral moraines are moving ridges of stony debris that accumulate on the margin of a valley glacier. Where two valley glaciers join to form a wider glacier, their lateral moraines combine within the larger glacier to form a medial moraine. Ground moraine is the material deposited as a sheet beneath the glacier.
You might also like to view...
Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate
a. greater than; moist b. less than; moist c. the same as; dry d. greater than; dry e. less than; dry
Which of the following is thought to have enriched ocean floor sediments with rare-earth elements?
A) Clathrate formation B) Deep-sea hotsprings C) Groundwater leaching D) Nodule and crust creation E) Sea floor methane seeps
The measurement of radioactive parent atoms and stable decay products (daughter atoms) in a rock allow for which of the following to be determined:
a. The amount of time that has elapsed since the rock cooled from a magma b. The amount of time that has elapsed since the rock formed from the compaction of sediment c. The amount of time that has elapsed since the radioactive isotopes were synthesized in a supernova. d. The amount of time that has elapsed since the stable daughter isotopes were synthesized in a supernova.
Vegetation growing alongside streams is termed ________
A) riparian B) adret C) ubac D) motile E) endothermic