Earthquakes: Basic Definitions
Passage
•
Science
•
9th Grade
•
Medium
Simone Huey
Used 1+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement best defines an earthquake?
Sudden break and energy release in crust
Slow bending without any energy release
Gentle shaking caused by wind over hills
Continuous movement of magma near volcanoes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identify the focus and epicenter using the map with concentric circles and a red star. Which pairing is correct?
Focus: surface ripple lines; Epicenter: any nearby coastline
Focus: city farthest ring; Epicenter: deepest mantle layer
Focus: nearest city to star; Epicenter: strongest shaking zone
Focus: point underground at star; Epicenter: surface point above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Look at the seismogram. The first P-wave and first S-wave are marked. What simple procedure is used first to begin locating the earthquake using this record?
Measure the time between P and S arrivals
Compare S-wave amplitude to surface waves
Calculate the speed of the recording drum
Estimate the total shaking duration
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A seismogram shows a 5-minute difference between the P-wave and S-wave arrivals. Using the travel-time graph with P-wave and S-wave curves, what distance does this time gap most closely indicate?
About 1,000 miles from the station
About 2,000 miles from the station
About 3,000 miles from the station
About 500 miles from the station
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the triangulation diagram, three circles are drawn around seismograph stations at measured distances. What identifies the earthquake’s epicenter?
The first station to record P-waves
The midpoint of the longest station distance
The average of all circle radii
The single point where all three circles intersect
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which wave type shown travels by push‑and‑pull motion in the same direction as energy transmission?
Rayleigh waves with elliptical paths
Love waves in a horizontal plane
P-waves with compression and extension
S-waves with side-to-side motion
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement best describes earthquake magnitude, as shown near the seismogram image?
It is how strong shaking feels to people and buildings
It is how strong the earthquake is at its focus
It is the number of aftershocks recorded in a region
It is the distance between P-waves and L-waves on paper
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