Volcanoes
What type of plate boundary is most likely to create a volcano?
Convergent plate boundary
What motion does an S wave move.
Up and down, or side to side.
When is magma called lava.
when it reaches the surface magma is called lava.
What is subduction?
When two plates collide and one plate is forced under the other.
What are the three main types of volcanoes?
Composite/strato, shield, and dome.
How does a p wave move.
back and fourth.
How is obsidian made?
When lava is cooled quickly but not shot into the sky.
Convergent, transform, and Divergent.
What do you call magma when it reaches the surface?
Lava
What is faster a p wave or a S wave.
P wave
What type of lava forms aʻā.
Ballistic.
What is a Transform boundary?
When two plates grid against each other moving in opposite directions.
What is viscosity?
The resistance to flow.
where was the worst earthquake.
Chile
How are crystals formed.
When the magma has not reached the surface and cools over thousands of years.
What is a divergent boundary?
When two plates move away from each other.
Difference between aʻā and Pāhoehoe lava
aʻā is a ballistic lava and doesn't flow very quickly. Pāhoehoe is less viscous and flows very quickly.
What type of boundary is the San Andreas fault?
Transform
how is pillow lava made?
It only happens under water when submarines explode.
What is a convergent boundary?
When two plates are colliding.