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