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WorksheetsEarthquake Engineering
Total questions: 60
Worksheet time: 20mins
A part of structure where all the loads are transmitted here.
Column
Beams
Earth or underlying soil or roks
Foundation
It caused the loose on soft soils which will affect its bearing capacity.
Earthquake
Distress of soil
Liquefaction
Excitation
As it was observed, in a cluster of buildings with the same level, shallow rock has less damaged than deep soils
True
False
No relation
In the Philippines, this book was adopted for the provisions on design of earthquake resistant structures.
NSCP
UBC
Both NSCP and UBC
Site coefficients factor of medium stiff to stiff where the depth is not greater than 60.96 meters
1.0
1.2
1.5
2.0
This level of ground motion has been taken as being an effective peak ground acceleration of 0.4g.
Zone 1
Zone 2
Zone 4
Zone 3
It has an average shear wave velocity of 180 to 360 meters per second
soft rock
rock
stiff soil
soft soil
It has an average shear wave velocity of less than 180 meters per second
soft soil
stiff soil
rock
soft rock
A description of seismic source which has a maximum moment magnitude of 6.8
Faults that are capable of producing large magnitude events
It has a high rate of activity
It has a low rate of activity
None of the 3 choices
The types of soils requiring site-specific evaluation in Soil Profile Type SF
very low plasticity clays
partially decayed vegetation
Plasticity Index of 75 for the depth greater that 25 feet
low sensitive clays
Vibrations in the earth caused by a sudden release of energy, usually as a result of the movement of rocks along a fault.
volcano
earthquake
tsunami
tornado
A fracture in bedrock, along which blocks of rock on opposite sides of the fracture move
volcanic arc
trench
fault
magnitude
What percentage of earthquakes are caused by the release of energy from movement along faults?
10%
80%
5%
90%
A measure of the total AMOUNT OF ENERGY released at the focus of an earthquake
magnitude
intensity
Mercalli Scale
Richter Scale or Moment Magnitude Scale
A measure of the DAMAGE done by an earthquake that is determined on the bases of the earthquake’s effect on people, structure, and the natural environment.
magnitude
intensity
Mercalli Scale
Richter Scale or Moment Magnitude Scale
What is the scale used to measure magnitude?
Mercalli Scale
Power Scale
Richter Scale or Moment Magnitude Scale
Seismograph
Describe the most powerful earthquake ever recorded as of 2016.
Occurred in Chile in 1960 and measured 9.5
Occurred in Alaska in 1960 and measured 9.2
Occurred in Japan in 1960 and measured 9.0
Occurred in California in 1960 and measured 8.5
What would be considered a great earthquake with an extremely high magnitude?
5.9 or higher
VIII
XII
8.0 or higher
What are the factors that affect intensity?
How far the location is from the fault where the earthquake occurred.
The depth at which the earthquake occurred.
The population density of the area
The type of building construction in the area.
How much weight Dwayne "The Rock" Johnson can lift!
What are other factors that affect the intensity of an earthquake?
The duration (length) of the shaking
The rotation of the Earth on its axis.
The type of surface material the building sits on (like dirt or rock).
Magnitude can affect intensity because an earthquake of a higher magnitude releases more energy than an earthquake of lower magnitude.
How can a high magnitude earthquake have a low intensity?
If the earthquake occurs in a very populated area.
If the earthquake occurs in an area with a low population.
A high magnitude earthquake must have a high intensity.
If the earthquake occurs in the middle of a busy city.
What are scientists doing to help forecast earthquakes?
Scientists are contacting Bill Nye and just hoping for the best.
Scientists are using anemometers to record wind speed and map earthquakes.
Scientists map earthquakes that happened in the past and notice patterns where earthquakes occurred and may still occur in the future.
Scientists use instruments to detect changes in the shape of Earth’s surface. Satellites monitor Earth’s surface for movement and collect data to compare over time.
What is the name of this earthquake resistant structure?
Tokyo Tower
Leaning Tower of Pisa
Eiffel Tower
Tokyo Skytree
How did engineers design the Skytree to withstand earthquakes?
3 deep piles → long, deep rods like a tree’s roots that help anchor the building to the ground.
Making it extremely rigid and not flexible.
Hollow concrete tube in center to help anchor the structure.
Fluid-filled dampers → reduce shaking during a quake.
What are some other features that make the Skytree earthquake resistant?
Wide base resembling a pagoda (stable shape).
Cylindrical shape and use of triangles in the structure.
Thin base resembling a pagoda (stable shape).
Rigid engineering that allows no flexibility in the structure.
Despite our technology, earthquakes can still occur with very little warning or no warning!
True
False
Who is this man?
Geologist Giuseppe Mercalli
Actor Rick Moranis
Seismologist Bill Nye
Seismologist Charles Richter
The RECORD made by a seismograph, the paper on which data about earthquakes waves is recorded.
telegram
seismogram
seismic wave
seismograph
What does this picture show?
The world's first known volcano indicator.
The world's first known earthquake detector.
The world's first known tsunami detector.
The world's first known alien detector.
How does this picture relate to earthquakes?
People in many cultures believed that Earth rested on the back of a massive creature whose movements caused it to shake.
People in many cultures believed that Earth rested on the back of a massive creature whose movements caused the Earth to spin creating tornadoes.
People in many cultures believed that Earth rested on the back of a massive creature whose movements caused the Earth to spin creating hurricanes.
Earthquakes were caused by atmospheric winds that were drawn into Earth's interior, which resulted in fires that swept through underground cavities trying to escape.
What do the lines on this map represent?
volcanoes
easrthquakes
plate boundaries
travel routes
Which of these natural disasters happen on these plate boundaries?
earthquakes
volcanos
both of these
none of these
Which is the safest material to use if engineering a house near a volcano?
stone
metal
wood
foam
Why do so many earthquakes and volcanos happen along plate boundaries?
bad weather in these areas
coincidence
plates move and shift
none of these
What causes tsunamis?
wind
whales
earthquakes
thunderstorms
What do you call a tool used to measure the size of an earthquake?
earthquake monitor
Richter Scale
scale
seismograph
These shutters help protect the house from what type of natural disaster?
earthquake
volcano
heat wave
hurricane
Which of these is a good engineering design for buildings where earthquakes occur?
only 1 floor
basements
storm shutters
very tall
What is the molten rock from a volcano called BEFORE it erupts at the surface?
lava
hot rocks
magma
fire
Which of the following is caused by a landslide or explosion under the oceans?
fire
ground rupture
liquefaction
tsunami
Which secondary effect of an earthquake is described as collapse of buildings caused by earthquake vibrating water-saturated fill or unconsolidated soil?
fire
landslide
liquefaction
tsunami
Which can help reduce the risk of an earthquake?
hazard maps
building resistant structures
Through effective earthquake instrumentation
All of the above
During large earthquakes, which is responsible for the greatest number of fatalities?
drowning
fires
people buried alive
Large objects (buildings) fall on people
Which is not a cause of earthquake?
movement of tectonic plates
changing of soil density
motion along earth’s faults
shifting of bedrocks
Accurate data gathering, recording and interpretation of data pertaining to ground shaking are all components of _______________.
hazard mapping
earthquake instrumentation
structural engineering
none of the above
Which of the following is a primary hazard caused by an earthquake?
cracks on the ground/ faults
landslides
liquefaction
tsunami
When you are inside a building when earthquake begins, you should _______________.
Run outside immediately
Duck, cover and hold on
Go to an open space.
Call your friends and relatives to let them know if you are okay or not.
. If you are at risk from earthquakes, what can you do to prepare for an earthquake?
Choose a safe place in every room of your house like sturdy tables or desk
Develop a family disaster plan.
Educate yourself on earthquake safety measures.
All of the above
A sudden, rapid shaking of the Earth’s surface caused by energy released from movement in the Earth’s crust
Earthquake
Beam
Wall
Column
The instrument used to monitor earth movements.
Seismograph
Specimen
Brace
Earthquake
Any level space in a building above ground that could be used by people.
Building Story
Brace
Specimen
Wall
Thin vertical elements that help support the weight of a building floor or level.
Column
Beam
Joints
Brace
Horizontal elements that support the weight of a building floor or level.
Beam
Column
Joints
Brace
Locations where a column, beam or brace connect together.
Joints
Column
Beam
Brace
A flat vertical element that supports the weight of a building level and provides extra building stiffness.
Wall
Column
Earthquake
Joints
A diagonal building element that extends between two building levels and provides extra stiffness. A brace can be a single diagonal /, V, or X shape.
Column
Beam
Joints
Brace
A platform used to test building design and material performance during earthquake shaking.
Shaking Table
Seismograph
Earthquake
Failure Point
Damage or breaking of the main building structure or any part of the building that is necessary to support its weight or to resist earthquake shaking.
Building Failure
Failure Mechanism
Failure Point
Shaking Table
A description of the how a building fails.
Failure Mechanism
Building Failure
Failure Point
Seismograph
The location where a building fails
Failure Point
Failure Mechanism
Building Failure
Wall
