Moraines Are Composed of Jumbled Piles of Very Poorly Sorted

question 53

Multiple Choice

Moraines are composed of jumbled piles of very poorly sorted rock fragments ranging in size from boulder to clay that fall out near the edges of glaciers.Why are the larger particles (boulders,etc.) not broken down during transport in the glacier?

• A) because the ice is not strong enough to break up rock
• B) because sediments are picked up and carried along with the ice as it moves
• C) because the sediments are not carried for very long distances
• D) because the ice stops the chemical weathering processes

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Definitions:

Acetaldehyde

A colorless volatile compound with a pungent odor, used in the manufacture of acetic acid, perfumes, and flavors.

Deprotonated

Refers to the removal of a proton (H+) from a molecule, resulting in the formation of a negatively charged ion.

Resonance

A phenomenon in chemistry where a molecule or ion can be represented by two or more equivalent structures, indicating the delocalization of electrons.

Anion

A negatively charged ion, which has more electrons than protons.