Earthquakes
What causes an earthquake?
A sudden release of energy in the Earth's lithosphere that creates seismic waves.
What causes a tsunami?
large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor.
What are the three main places where volcanos form?
hot spots, divergent plate boundaries, convergent plate boundaries.
What causes a subduction zone to form?
two plates collide at a convergent boundary, and one plate is driven beneath the other.
What was all of Continental Drift Theory Evidences?
1. Geometric Evidence
2. Fossil Evidence
3. Mountain Evidence
4. Climate Evidence
Where does roughly 90% of the earthquakes take place?
Pacific Ring of Fire
what's the warning signs a tsunami is coming?
A large earthquake occurred recently, rapid and unexpected recession of water.
What type of volcano is the largest and has the most violent eruptions?
Whats the difference between Oceanic and Continental crust?
Oceanic crust is heavier and denser.
What was Pangea?
A supercontinent consisting of all continents on earth.
What machine do they use to detect an earthquake?
Seismograph
What was the height of the tallest tsunami ever recorded
1,720-foot, which hit Alaska in 1958.
Fun fact: the largest ever recorded was not even dangerous as no one lived there.
How do volcanos form?
Magma rises from the hot spots and erupts as lava through cracks in the Earth's surface forming volcanoes.
Where are subduction zones generally found?
Convergent plate boundries.
Define Convection
Cycle where substances rise and fall because
of changes in temperature and density.
What is the strongest magnitude earthquake ever measured on the Richter scale?
8.6 magnitude earthquake
What's the deadliest tsunami recorded?
What is the most powerful volcanic eruption ever recorded?
1815 eruption of Mount Tambora
What type of boundary is it when plates move away from each other?
Divergent
What are tectonic plates?
The theory describing how Earth’s plates move and what happens when they interact with each other.
Chile
What was the date the big tsunami hit the pacific northwest centuries ago?
January 26th, 1700
What was the name of the volcano that destroyed Pompeii?
Mount Vesuvius.
What is seafloor spreading?
the formation of new areas of oceanic crust,
Who created the continental drift theory?
Alfred Wegener