Tsunami Dynamics and Impact
This worksheet explores the formation, characteristics, and devastating impacts of tsunamis, aligning with Grade 11 Earth Science curriculum.
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Standards
Tsunami Dynamics and Impact
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Read each question carefully and answer to the best of your knowledge. Use complete sentences for short answer questions.
1. What is the primary cause of most tsunamis?
Strong winds over the ocean
Underwater volcanic eruptions
Submarine earthquakes with vertical seafloor displacement
Changes in atmospheric pressure
2. As a tsunami approaches the coast, its speed and height typically change in which way?
Speed increases, height decreases
Speed decreases, height increases
Both speed and height increase
Both speed and height decrease
3. The area where tectonic plates meet and movement causes earthquakes is known as a zone.
4. Tsunami waves can travel across entire oceans at speeds comparable to a .
5. The phenomenon where the ocean recedes unusually far from the shoreline before a tsunami strikes is called a .
6. Describe the process by which a submarine earthquake can generate a tsunami. Include the role of vertical seafloor displacement.
7. Analyze the provided image of a tsunami cross-section. Based on the illustration, explain why the wave height increases dramatically as it approaches the coastline.
8. All underwater earthquakes generate tsunamis.
True
False
9. Tsunami waves are often confused with normal ocean tides due to their similar characteristics in the open ocean.
True
False