An earthquake of Richter magnitude _____ produces 100 times more ground shaking than an earthquake of magnitude _____?
3,1
2,3
3,2
3,4
An earthquake of Richter magnitude _____ produces 100 times more ground shaking than an earthquake of magnitude _____?
3,2
3,1
2,3
3,4
How does fire danger increase during earthquakes?
Fallen debris can be flammable, & electrical wiring.
Cities cannot afford enough firefighters to put them out.
There is not enough water available during large earthquakes
Cities cannot afford enough firefighters to stop them.
Which of the following choices describes a tsunami?
A huge sea wave resembling a large rising tide.
Buildings and roads on the Earth's surface that are shaken
The shaking of the ground that liquefies water based soil
A portion of the ground that loosens and slides downhill
What are the characteristics of an earthquake that make it so damaging?
Many cities do not have enough first responders.
Cities can't afford to rebuild right away.
Earthquakes occur with little or no warning.
Landslides and mudslides caused by earthquakes.
Where is the epicenter of an earthquake found?
Above ground, directly above the focus.
Underground, where the rock is breaking.
About a mile away from the focus.
Underground, below the focus.
Tsunamis are caused by earthquakes that occur _____.
in the plains
in the mountains
underwater
in the Earth's core
The point underground where the earthquake occurs is called the:
Aftershock
Foreshock
Focus
Epicenter
What does it mean to say that the Richter scale is logarithmic?
Magnitude is doubled for each step
Magnitude is cut in half for each step
There is a ten-fold decrease for each step
There is ten-fold increase in ground shaking for each step
How does a magnitude 4 earthquake differ from a magnitude 8 earthquake in regard to energy?
The magnitude 8 earthquake has 1,024 times the energy
he magnitude 8 earthquake has 32,768 times energy
The magnitude 8 earthquake has 128 times the energy
The magnitude 8 has 1,048,576 times energy than the 4
The movement of the ground due to rock breaking below the surface during an earthquake is known as _____.
ground heave
subsidence
seismic activity
settlement
Why do earthquakes occur?
Stress builds up around fault lines
Atmospheric pressure
Hurricanes
Climate change
Why can geologists not predict earthquakes?
Foreshocks often don't register on seismographs.
Earthquakes are man made, not natural.
Earthquakes depend on the weather, which is unpredictable.
Activities along fault lines are unpredictable.
What can you expect to happen after experiencing an earthquake?
You can assume that there will be no more earthquakes.
You should expect to feel foreshocks.
You can assume that geologists will be able to predict it.
You should expect to feel aftershocks.
The seismic waves that do most of the shaking are:
Primary
Body
Rayleigh
Love
A _____ is a machine that produces (a) _____.
seismograph, seismogram
seismograph, body wave
seismogram, seismograph
primary wave, secondary wave
