Earth Structure
What are the main layers of the Earth?
The scientific theory explaining the structure of the Earth's crust.
What are plate tectonics?
This is an intense violent shaking of the ground, causing destruction
What is an earthquake?
A giant wave caused by earthquakes or volcanic eruptions under the sea.
What is a tsunami?
A weak spot in the crust where molten material, or magma, comes to the surface.
What is a Volcano?
Part of the lower crust and rigid uppermost layer of the mantle.
What is the lithosphere?
Where are earthquakes created?
Earthquakes are created at all types of plate boundaries.
the smaller earthquakes called that take place after the main one.
What are aftershocks?
Tsunamis are caused by underwater ___________.
Earthquakes.
A molten mixture of rock-forming substances,gasses,and water from the mantle.
What is magma?
The layer that contains molten (liquid) metal that surrounds the inner core.
What is the outer core?
Which is more dense: Oceanic or continental crust?
Oceanic crust is more dense.
An instrument that measures and records details of earthquakes.
What are seismographs?
What was the most destructive tsunami in history?
What was the 2004 Indian Ocean tsunami?
An area where material from deep within the mantle rises and melts, forming magma.
What are hot spots?
What is the Earth's core made up of?
Iron and nickel.
The supercontinent that existed on earth 300 million years ago.
What is Pangea?
The two main type of seismic waves and their movements.
P-waves: Back and forth,
S-waves: Up and down.
Where did the Lituya Bay tsunami take place?
What is Lituya Bay, Alaska?
Which volcano looks like dome-shaped mountains?
What are Shield Volcanoes?
What is the order of the layers of Earth?
The crust, the mantle, the outer core, and the inner core.
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
What is subduction?
How are surface waves different from body waves?
They are more destructive.
What planet other than earth has tsunamis?
What is Mars?
Materials that layer themselves and form a huge cone-shaped mountain.
What are stratovolcanoes?