What is an Earthquake?
What is the definition of an earthquake?
Earthquakes are ground movements that occur when blocks of rock in Earth move suddenly and release energy.
Most earthquakes occur near the boundaries of what?
Tectonic Plates
Where do most earthquakes occur?
At or near plate tectonic boundaries.
T or F All earthquakes cause MAJOR damage.
F , many do not cause major damage.
What is Mrs. Allen's favorite color?
Green
What is the energy released as?
Seismic Waves
A ___ is where two or more tectonic plates meet.
Tectonic Plate Boundary
At divergent boundaries, earthquakes are common along ___ faults.
normal
What are the three effects of earthquakes talked about in the book?
1. Danger to People
2. Damage to Structures
3. Tsunamis
What is Mrs. Allen's favorite animal?
Sharks
Seismic waves can cause what to happen?
The ground to shake and tremble.
A __ is a break in Earth's crust along which blocks of rock move.
Fault
At convergent boundaries, earthquakes are common along ___ faults.
reverse
The shaking of an earthquake can cause structures to move ___ and ___ .
vertically and horizontally
What is Mrs. Allen's favorite candy?
Flips
The _____ is a place within Earth along a fault at which the first motion of an earthquake occurs.
Focus
What is the definition of deformation?
The process by which rock becomes deformed and changes shape due to stress.
At transform boundaries, earthquakes are common along ___ faults.
strike-slip
What is the definition of a tsunami?
A series of extremely long waves that can travel across the ocean at speeds of up to 800 km/h.
What is Mrs. Allen's favorite chocolate?
Dark Chocolate
Directly above the focus on Earth's surface is the ___ .
Epicenter
What is elastic rebound?
The return of rock to its orginal shape after elastic deformation.
Stress that stretches rock and makes rock thinner is called ___.
Stress that shortens or squeezes an object is known as ___ .
Stress that distorts a body in opposite directions is called ___ .
tension
compression
shear stress
What is common aftermath of a tsunami?
Floods, polluted water supplies, and large amount of debris.
What is Mrs. Allen's baby's name?
Birdie