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