How Is an Alluvial Fan Formed

question 93

Multiple Choice

How is an alluvial fan formed?

• A) a stream erodes down through older terraces and entrenched meanders
• B) sediment is deposited by debris flows and streams that decrease in velocity along the mountain front
• C) a landslide blocks the stream, causing sediment to accumulate upstream
• D) a dam increases the speed of currents below the dam

---

Definitions:

Supreme Court

The highest federal court in the United States, with ultimate appellate jurisdiction over all federal and state court cases involving points of federal law.

Unitary System

A form of government in which a single central government holds all the power, with any regional authorities operating under its directive.

Federal Government

The central authority of the United States, governing at the national level and responsible for enforcing national laws.

Educational Guidelines

Official recommendations or rules that inform educational strategies, curricula, and teaching standards.