Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Stress that pulls a material apart.
|
tension
|
|
|
Stress that decreases the volume of a material.
|
compression
|
|
|
Stress that causes a material to twist.
|
shear
|
|
|
Large, rounded or streamlined tephra are called _____ ____.
|
volcanic bombs
|
|
|
Large, angular volcanic fragments are called _____ _____.
|
volcanic blocks
|
|
|
The smallest tephra are ______.
|
dust
|
|
|
Fracture caused by horizontal tension.
|
normal fault
|
|
|
Fracture caused by horizontal shear.
|
strike-slip fault
|
|
|
Fracture caused by horizontal compression.
|
reverse fault
|
|
|
Magma found along continental margins.
|
andesitic magma
|
|
|
Magma formed when rocks in upper mantle melt.
|
basaltic magma
|
|
|
Magma formed when molten material rises and mixes with overlying silica.
|
rhyolitic magma
|
|
|
Magma with low viscosity and low explosiveness.
|
basaltic
|
|
|
Magma with high viscosity.
|
rhyolitic
|
|
|
Magma with intermediate viscosity and explosiveness.
|
andesitic
|
