Earthquakes and Seismic Waves
Physics ⇒ Earth and Space Physics
Earthquakes and Seismic Waves starts at 7 and continues till grade 12.
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Describe how a tsunami can be generated by an earthquake.
Describe the main difference between P-waves and S-waves.
Describe what a fault is in the context of earthquakes.
Describe what happens to the amplitude of seismic waves as they move away from the epicenter.
Explain how scientists use seismic waves to study the interior of the Earth.
Explain what is meant by the term 'aftershock'.
If a seismograph records a P-wave at 10:00:00 and an S-wave at 10:00:20, what is the time difference between their arrivals?
If the time difference between the arrival of P-waves and S-waves at a seismic station is 40 seconds, what does this indicate about the distance to the earthquake's epicenter?
Which of the following best describes a seismic wave?
(1) A wave of water in the ocean
(2) A wave of energy that travels through the Earth
(3) A wave of air in the atmosphere
(4) A wave of light from the Sun
Which of the following best describes the Richter scale?
(1) Measures the intensity of shaking
(2) Measures the magnitude of an earthquake
(3) Measures the depth of the focus
(4) Measures the distance from the epicenter
Which of the following is a method used to locate the epicenter of an earthquake?
(1) Triangulation
(2) Reflection
(3) Refraction
(4) Calibration
Which of the following is NOT a result of an earthquake?
(1) Tsunami
(2) Landslide
(3) Volcanic eruption
(4) Solar eclipse
Earthquakes are most commonly caused by the movement of ________ plates.
Fill in the blank: The ________ scale is used to measure the effects or intensity of an earthquake based on observations.
Fill in the blank: The boundary where two tectonic plates meet is called a ________.
Fill in the blank: The process of determining the location of an earthquake's epicenter using data from three or more seismic stations is called ________.
True or False: All earthquakes are strong enough to be felt by humans.
True or False: Earthquakes can only occur at plate boundaries.
True or False: Surface waves travel only along the Earth's surface.
True or False: S-waves can travel through both solids and liquids.
