The Zone of Fracture in a glacier is found in the uppermost 50 m of glacial ice. Explain why ice fractures above this depth, but not below
What will be an ideal response?
Answer: Ice in the upper 50 m of a glacier is cold and brittle, hence the breakage. However, below that point, the ice is under a great deal of pressure. This pressure allows the ice to move in a ductile manner, which seals off any fractures.
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The scientific process and knowledge is based on ________
A) guesses based our personal feelings about the subject under inquiry B) the fact that all hypotheses can be proven true C) observation alone D) quantitative data alone E) a systematic process of learning about and testing our understanding of the world
What is the process by which the bedrock underlying a glacier is worn down by rock debris that is dragged by the moving ice?
A. glacial plucking B. glacial advance C. glacial abrasion D. glacial retreat E. glacial flour
The constant path that Earth travels in its orbit around the Sun describes a surface called the plane of the ____
a. equinox b. inclination c. ecliptic d. declination e. perihelion
Summarize the colligative properties of water and how salinity affects them. What will be an ideal response?