Chapter 14
What happens to sea-level when glaciers melt? Question 10 options: local isostatic depression sea-level stays the same sea-level falls globally sea-level rises globally
sea-level rises globally
In a cross-sectional view of a glacier, where does the ice actually undergo ductile deformation (i.e. flow internally)? Question 7 options: In the area with the largest crevasses The top 100 feet The upper 500 feet or less than 100 kilopascals The lower part of the glacier where stress exceeds 100 kilopascals
The lower part of the glacier where stress exceeds 100 kilopascals
Plastic deformation means that _______. Question 11 options: a material cracks under pressure a material is made of organic polymers similar to plastic a material breaks when stressed by a force a material bends or flows when stressed by a force
a material bends or flows when stressed by a force
A(n) _______ is confined to a long, narrow valley located in mountainous areas especially closer to the poles. Question 14 options: alpine glacier ice sheet continental glacier mountainous glacier
alpine glacier
Which of the following is NOT a glacier Question 5 options: flowing valley ice an iceberg the Laurentide ice sheet the Greenland ice sheet
an iceberg
In this image, what is "F" Question 6 options: terminal moraine arete horn tarn
horn
What is the main cause of the glacial cycles during the Quaternary Ice Age? Question 3 options: global tectonics sea-level change carbon dioxide milankovitch cycles
milankovitch cycles
In a glacier, crevasses extend from the surface down to: Question 13 options: near the base of the brittle zone near the base of the glacier where they remain open but are deformed in the plastic zone where they become clogged by debris carried in the ice
near the base of the brittle zone
The Antarctic ice sheet has been there for several million years, causing what change to the Antarctic continent? Question 15 options: Summer no longer occurs there a type of metamorphism called cryomorphism has taken place there rocks of the continent have been spread out away from the south pole parts of the continent have been depressed below sea level
parts of the continent have been depressed below sea level
In this image, what is 'C'
tarn
In this image what is feature "D"
terminal moraine
What does it mean when a glacier "advances"? Question 12 options: the glacier is calving into the ocean, where pieces of ice are becoming icebergs the terminus of the glacier is shifting forward; the glacier is growing longer it is flowing downhill towards the end of the glacier it is gaining snow as fast as it is losing it; the glacier is not shrinking
the terminus of the glacier is shifting forward; the glacier is growing longer
Which of the following conditions would NOT lead to a glacier advancing? Question 8 options: more winter snow and less summer melting warm summers cool summers more winter precipitation than normal
warm summers
The equilibrium line divides the _______ from the _______. Question 1 options: brittle zone; plastic zone erosion zone; deposition zone zone of freezing; zone of melting zone of accumulation; zone of ablation
zone of accumulation; zone of ablation
In this image, what is feature "A" Question 4 options: horn cirque hanging valley terminal moraine
hanging valley