the sliding down of a mass of earth or rock from a mountain or cliff
100
Define sinkholes
a depression in the earth caused by water erosion
100
define Tsunami
wall of water created by a seismic wave
100
define earthquakes
movements of the ground that are caused by a sudden release of energy.
100
define volcanoes
The vent in earth's surface though magma and gases are expelled.
200
landslides can cause damage in what ways
broken electrical, gas water and sewage lines that can lead to illness or injury, loss of life, severe physical trauma
200
What are some warning signs of sinkholes
trees starting to lean, sagging fences, or doors and windows that won't close properly
200
What are some tsunami warning signs
ocean water leaving the beach, draining it; large earthquakes, and loud roar similar to that of a plane or train
200
what cause earthquakes?
parts of a fault remain locked until the stress becomes so great that the rocks suddenly grind past each other.
200
What can you do to stay safe during an eruption
if you are inside make sure pets are inside a sheltered area. if ash is falling, stay inside, unless it continues to fall for hours, as that could make the roof collapse.
300
a landslide can travel as fast as
10-35 mph
300
what are the causes of sinkholes?
earthquakes, erosion, and drainage of ground water.
300
What are some tsunami prevention measures?
Sea Walls, Artificial reefs, & breakwaters
300
where do earthquakes occur most often in the united states?
alaska.
300
a major zone of active volcanoes that encircles the pacific ocean.
ring of fire
400
What are some landslide warning signs
decks leaning away from the house, unusual bulges in the ground, & leaning telephone poles and trees
400
what do call sinkholes in the ocean?
blue holes
400
Tsunamis only occur one at a time (true or false)
false
400
what are warning signs of earthquakes
booming noises, strange behavior of animals & electronic interference
400
what volcano erupted in may 18, 1980
mt. saint helens
500
What was the most devastating landslide
the eruption of Mt St. Helens
500
What are some sinkhole prevention measures
Foundation underpinning, building steel piles (pillars) and replacing soil
500
how tall was the tallest Tsumani
1700ft
500
What was the most devastating earthquake
The 1960 Valdivia earthquake in Chile
500
these islands in the pacific ocean were originally hot spots, but now are states.