Earthquakes
What is the point underground where an earthquake begins?
The focus
Which seismic waves travel the fastest?
P waves
What type of volcano has wide, gentle slopes formed by flowing lava?
Shield volcano
what usually causes tsunamis
What natural disaster happens when rock and soil suddenly move down slopes?
Landslides
What is the point on the surface directly above where an earthquake begins?
The epicenter
What seismic waves cause the most damage?
Surface waves
What is molten rock called when it reaches earths surface? What about underground?
Surface is lava, underground is magma
This is the definition of a tsunami
Series of ocean waves caused by underwater release of energy
What natural disaster happens when water overflows onto land that is normally dry?
Flood or flash flood
What tool do scientists use to record earthquake waves?
Seismograph
What types of matter can P waves and S waves travel through?
All matter and Liquid only
What Is a caldera?
Bowl shaped depression left when a volcano collapses after an eruption
Why is a tsunami dangerous? What happens with the water
It is a wave that is higher than the average water level and it causes flooding
What is the area called where most of the planets earthquakes and volcanoes occur? And where is it located?
Ring of fire, pacific ocean
These are the three types of faults and what plate boundary you find them
Normal, divergent, reverse, convergent, strike slip, transform
P waves move particles in this direction or in this way
Push-pull, move particles back and forth like a spring
what is the fast moving mixture of hot gas ash and rock flowing down a volcano called during eruptions?
Pyrocastic flow
Why do tsunami waves become taller near the shore?
The water becomes shallow, causing waves to slow and pile up - water gets pushed up like a spring on a ramp
Give the definition of natural disaster (be precise)
Uncontrollable geological event that results in significant damage to humans or ecosystems
How did scientists determine that part of the earth’s core was liquid?
Mr Z decides
These are the three types of forces experienced at the three plate boundaries
Compression, convergent, tension, divergent, shear, strike slip
Where can volcanoes form and what is necessary for a volcano to form
Convergent, divergent, hot spots. Cracks in the crust where magma can pool and build pressure and a vent for magma to escape
Why can tsunamis travel across the ocean?
They carry huge amounts of energy through the water like a compressed spring
Why do earthquakes occur at plate boundaries and what type do the deepest occur and why
Because of built up stress as plates push pull or slide against another. Deepest are at subduction, one plate under another. Also the strongest