Earthquakes
Today, people are never killed by earthquakes...True or False
False
false
When the force on rocks is great enough, they break, producing vibrations called
Earthquakes
The _____ waves are the first to arrive a seismograph station
primary
The point in earths surface where the energy release of an earthquake occurs is the
focus
Breaks in earths crust are called fractures.....true or false
false...faults
true
Which movement of blocks of land creates an earthquake? a) sliding past each other B) moving towards each other C) Moving away from each other D) All of the above
D
The most destructive seismic waves are
surface waves
The ___ Wave reaches the seismograph station after the P wave.
S
The larger a force is applied at a fault, the SMALLER the chance is for an earthquake...true or false
false
Where can volcanoes occur? A) convergent plate boundaries B) Divergent plate boundaries C) Over hot spots D) All of the above
D
The Mercalli scale will measure the magnitude of an earthquake..true or false?
false- Richter scale
At a ______ fault, rocks on either side of the fault move past each other
strike slip
A scientist who studies earthquakes is called a
seismologist
Most earthquakes occur in the center on continents...true or false
false
Instruments that record seismic activity
Seismometer or seismograph
A normal fault occurs where two blocks or rock pull apart...at which plate boundary does this occur?
Divergent
Along a _____ fault, rock moves upward and towards a rock in relation to it
reverse
A graphical illustration of the earthquake waves on paper
seismogram
In a strike-slip fault, the two blocks of land move side by side...true or false?
Give three things you can do during an earthquake to stay safe
Get away from windows, get under something, cover your head, have a first aid box near, have an emergency plan, fire extinguisher, etc.
"We all got scared and ran outside, the house was okay but the shed fell over and was destroyed" This quote would help a researcher place an earthquake on which scale?
Mercalli Scale
Along a ______ fault, rock moves downward in relation to the rock next to it
normal
Waves that travel outward from the epicenter
Surface waves