Show:
Earthquakes
Volcanoes
Tsunamis
Tectonic Plates
Earth's Layers
100
Aristotle was first to note that _____ ground shakes more than ____ ground.
soft...hard
100
What are shield volcanoes?
Small volcanoes that gradually slope up from quiet eruptions.
100
What area does tsunamis occur most?
Pacific Ocean
100
What is the name of the plate that carries North America?
North American Plate.
100
True or False? The inside of the earth contains higher temperature and pressure.
True
200
True or False? Earthquakes kill approximately 8,000 people a year.
True
200
What are cinder cone volcanoes?
Volcanoes formed from ash, cinders, and explosive bombs creating a big cone.
200
True or False? On average, 3 tsunamis occur per year?
False (2)
200
Do volcanoes only form at plate faults?
No
200
The crust consists of _____ crust and ____ crust.
oceanic...continental OR continental...oceanic
300
How many earthquakes on average are there per day? (0, 2, 4, or 6?)
2
300
What are composite volcanoes?
Tall volcanoes from alternating ash, cinder, and bombs.
300
What natural disaster creates tsunamis?
Earthquakes
300
What is it called when one plate moves horizontally to each other?
Strike-Slip Fault
300
What does the crust range in thickness?
5-70 kilometers
400
The rapid releases of energy creates ____.
seismic waves
400
Volcanoes are formed by ___ ___ ____
tectonic plates colliding.
400
Approximately every (15, 20, 17, 9) years, a destructive, ocean-wide tsunami occurs.
15
400
What is a tectonic plate?
Irregular shaped slab of rock
400
What is the state of matter of the Outer Core?
Liquid
500
Damage caused by earthquakes depends on their ______ and ____ type.
depth...fault type
500
What is the difference between magma and lava?
Magma is formed from volcanoes underground, and when the magma reaches the surface, it becomes lava.
500
Most tsunamis are caused by earthquakes generated in a _______ zone.
subduction
500
What is the landmass called before the plates started to move a LONG time ago?
Pangaea
500
The inner core mainly consists of _____.
Iron