44 Questions
What is the main cause of earthquakes?
Tectonic plate movement
How are fault lines related to earthquakes?
Fault lines are where earthquakes most commonly occur
What instrument is used to measure earthquakes?
Seismograph
What is the recording made by a seismograph called?
Seismogram
What is another name for a seismograph?
Seismometer
Why do earthquakes occur deep underground?
Due to tectonic plate movement
What does a seismometer measure?
Seismic vibrations
Which type of seismic waves do the most shaking on the Earth's surface?
Surface waves
What type of waves only travel through solid materials and move in an up-and-down motion similar to waves in the ocean?
S-waves
Which scale uses the logarithm (base 10) of the amplitude of the largest wave created by the earthquake on the seismograph?
Richter Scale
What is the purpose of a seismogram?
To gather information on earthquakes
What type of waves travel through the Earth's interior and not along its surface?
P-waves
What type of earthquake is considered to be a medium to a strong earthquake if measured at 6.1 on the Richter scale?
Medium earthquake
Which scale is preferred over the Richter scale, especially for high-magnitude earthquakes, as it is based on seismic movement rather than wave amplitude?
Moment Magnitude Scale
What is the term used to refer to the size and strength of an earthquake?
Magnitude
What is the main cause of seismic activity?
The movement of the Earth's tectonic plates
What is the primary function of a seismograph?
To measure ground-shaking activity caused by earthquakes
What type of waves does a seismometer detect?
Seismic waves caused by earthquakes
How are fault lines and earthquakes related?
Fault lines are where earthquakes most commonly occur
What causes a disturbance to the Earth's surface, resulting in earthquakes?
The movement of tectonic plates
How are earthquakes measured?
Using a seismograph or seismometer
What is the purpose of studying seismic activity?
To understand earthquake patterns and potential risks
What is the main difference between P-waves and S-waves?
P-waves move in an up-and-down motion, while S-waves move longitudinally.
Which type of seismic waves causes the most damage on the Earth's surface?
Rayleigh waves
What does the Richter Scale measure?
Earthquake magnitude
Why is the moment magnitude scale preferred over the Richter scale for high-magnitude earthquakes?
It uses seismic movement rather than wave amplitude.
What are seismograms used for?
Determining earthquake location and strength
Which type of seismic waves travel through the Earth's interior and not along its surface?
P-waves
What is the characteristic motion of love waves on the Earth's surface?
Snake-like motion
What type of seismic waves move along the Earth's surface and cause the most damage during an earthquake?
Rayleigh waves
Which scale measures earthquakes using the logarithm (base 10) of the amplitude of the largest wave created by the earthquake on the seismograph?
Richter Scale
What is the purpose of the moment magnitude scale (MMO) in measuring earthquakes?
It measures seismic movement rather than wave amplitude
Which type of seismic waves travels through the Earth's interior and not along its surface?
P-waves
What is the characteristic motion of love waves on the Earth's surface?
Horizontal motion
How does the Richter Scale categorize earthquakes with respect to magnitude?
Based on wave amplitude
Which scale ranges from 1-10 where a value of 1 represents a weak earthquake and a 10 represents an extremely strong earthquake?
Richter Scale
What is the main difference between P-waves and S-waves?
Direction of movement
What instrument records ground-shaking activity caused by earthquakes on the Earth's surface?
Seismometer
What causes a disturbance to the Earth's surface, resulting in earthquakes?
Tectonic plate movement
What is the primary function of a seismometer?
Detect underground vibrations
Which type of seismic waves only travel through solid materials and move in an up-and-down motion similar to waves in the ocean?
Surface waves
Why is the moment magnitude scale preferred over the Richter scale for high-magnitude earthquakes?
It provides a more accurate measure of earthquake size
What are seismic waves that travel through the Earth's interior and not along its surface called?
P-waves
What is the purpose of studying seismic activity?
Determining earthquake patterns and trends
Learn about seismic activity and plate tectonics, including how the Earth's crust is broken into plates, their movements, and the occurrence of earthquakes at fault lines. Understand how the movement of plates can cause disturbances to the Earth's surface.
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