What is the difference between an earthquake's intensity and magnitude?

intensity is amount of damage, magnitude is energy released

Which events occur most often at mid-ocean ridges?

earthquakes & volcanic eruptions

What is an earthquake?

sudden release of energy due to Earth's internal energy

What causes most earthquakes?

movement of bedrock along a fault line

What do earthquakes tell scientists about Earth's history?

Continents are continually moving

What should you do if you're in bed during a quake?

stay in bed, cover head with a pillow

Where are future earthquakes predicted to occur in the US?

transform plate boundary & a hot spot

What should you do if you're driving and a quake happens?

Pull over and wait for the shaking to stop

If the location of earthquakes were plotted on a world map, what pattern would you see?

They're generally along the edges of tectonic plates

What should you do if you're in a stadium/movie theater when a quake hits?

stay in your seat, duck, protect head/neck with your arms

The tectonic movement of plates is thought to be caused by...

convection currents in the asthenosphere

What should you do if you're in a stairwell during a quake?

stay put & wait for shaking to stop

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Earthquakes Review

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Questions 23

Answers

1
What is the difference between an earthquake's intensity and magnitude?
intensity is amount of damage, magnitude is energy released
intensity is energy released, magnitude is location of quake
intensity is measures damage, magnitude is location of quake
intensity is energy released, magnitude is amount of damage
2
Which events occur most often at mid-ocean ridges?
meteorite impacts & tilting of shorelines
earthquakes & volcanic eruptions
water pollution & adiabatic heating
magnetic pole reversals & cooling of ocean water
3
An earthquake's focus is located
at a seismograph station
under your bed
on the surface of the Earth
below Earth's surface
4
What is an earthquake?
slow movement of the ground
sudden release of energy due to Earth's internal energy
a large tsunamis
release of energy due to Earth's weather
5
The epicenter of an earthquake is located...
under your bed
at a seismograph station
on the surface of the Earth
below Earth's surface
6
What causes most earthquakes?
heat exchange between crust & atmosphere
gravitational pull on bedrock by the moon
movement of bedrock along a fault line
deposition of sediment in lakes & oceans
7
What do earthquakes tell scientists about Earth's history?
Dinosaurs became extinct 65 million years ago
Oceans are much deeper now than millions of years ago
The climate is constantly changing
Continents are continually moving
8
What can be determined from a time-travel graph after an earthquake?
magnitude of an earthquake
epicenter of an earthquake
intensity of an earthquake
focus of an earthquake
9
What should you do if you're in bed during a quake?
Stand in the nearest doorway
stay in bed, cover head with a pillow
find a table or desk to hide under
10
Earthquakes are detected, measured and recorded by instruments called
magnetometers
seismographs
Richter scales
sonargraphs
11
Where are future earthquakes predicted to occur in the US?
convergent plate boundary only
transform plate boundary & a hot spot
mid-ocean ridge & a divergent boundary
divergent plate boundary only
12
The theory of plate tectonics infers that the N American Plate has moved
southwest
northeast
southeast
northwest
13
What does an earthquake wave transmit (send out)?
light
speed
particles
energy
14
California's longest fault is the...
San Andreas
Garlock
Hayward
San Jacinto
15
What should you do if you're driving and a quake happens?
Pull over and wait for the shaking to stop
keep driving until you get to your destination
Drive until you reach an overpass or bridge
16
Which scale measures energy released during an earthquake?
Mercalli
Richter
Truck
Bathroom
17
If the location of earthquakes were plotted on a world map, what pattern would you see?
They have the same frequency everywhere on Earth
They most frequently occur near the middle of continents
There is no consistent pattern
They're generally along the edges of tectonic plates
18
A huge undersea earthquake off the Alaskan coastline could produce
hurricane
tsunamis
cyclone
thunderstrom
19
What should you do if you're in a stadium/movie theater when a quake hits?
find an interior wall, protect head/neck with arms
try to exit
stay in your seat, duck, protect head/neck with your arms
call 911
20
The tectonic movement of plates is thought to be caused by...
tidal motions in the hydrosphere
solidification in the lithosphere
convection currents in the asthenosphere
density differences in the troposphere
21
What should you do if you're sitting at a desk during a quake?
get out of the building
get under the desk
find the nearest doorway to stand in
nothing
22
What should you do if you're in a stairwell during a quake?
go down stairs & out of building
Go up stairs to the top
go to first available door back into building
stay put & wait for shaking to stop
23
Which scale measures intensity of an earthquake?
Richter
Bathroom
Truck
Mercalli

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