Earthquakes 101
This is the point inside the Earth where an earthquake begins.
What is the focus?
These are the two main types of seismic waves.
What are P-waves and S-waves?
When plates push together, they form this type of boundary.
What is a convergent boundary?
This is the name for the point directly above the focus on Earth's surface.
What is the epicenter?
These fast waves push and pull like a slinky.
What are P-waves?
When plates move apart, this kind of boundary is formed.
What is a divergent boundary?
These are the "puzzle-pieces" of the Earth's crust. (graham crackers"
What are tectonic plates?
These slower waves move buildings up, down, and side to side.
What are S-waves?
This boundary happens when plates slide past each other.
What is a transform boundary?
This science studies earthquakes and how the Earth moves. (starts with a s)
What is seismology?
These shapes are the best to use for strong buildings. (there are 2)
triangles and arches
When wet soil acts like a liquid during an earthquake, it's called this.
What is liquefaction?
Earthquakes usually happen around this depth under the Earth's surface. (answer in miles)
What is about 15 miles?
This device records vibrations in the ground. (think about the study of earthquakes for a hint.)
What is a seismograph?
Loose soil like rice caused towers to do this.
What is tip, sink, or wobble?