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