Welded Tuff Consists of Ash Surrounding Large, Jagged, Irregularly-Shaped Pieces

question 68

Multiple Choice

Welded tuff consists of ash surrounding large, jagged, irregularly-shaped pieces of material.What is this material and where does it come from?

• A)Mineral crystals that formed during cooling
• B)Rock fragments that erupted from the volcano
• C)Gas pockets from volatiles in the lava
• D)Slivers of volcanic glass from the lava

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Definitions:

Discount Rate

The interest rate charged by central banks to commercial banks for short-term loans.

Expansionary policy

Economic policies aimed at increasing the supply of money or reducing taxation to stimulate economic growth, typically undertaken during a recession.

Contractionary Policy

Economic policies intended to reduce spending and slow down inflation, often through increased interest rates or reduced government spending.

Banking System

The network of institutions, including commercial banks, central banks, and other financial intermediaries, that provide banking services and facilitate financial transactions within an economy.