lesson 3 Flashcards
What is an earthquake?
A sudden shaking of the ground caused by the movement of tectonic plates.
What is a tsunami?
A series of ocean waves generated by large disturbances, such as underwater earthquakes.
True or False: Earthquakes can only occur on land.
False
Fill in the blank: The Richter scale measures the _____ of an earthquake.
magnitude
What is the primary effect of an earthquake on settlements?
Destruction of infrastructure and buildings.
Multiple Choice: What is one major consequence of a tsunami?
Widespread flooding
What does the term ‘aftershock’ refer to?
Smaller earthquakes that occur after the main shock of a larger earthquake.
True or False: Tsunamis can travel at speeds of up to 500 miles per hour in deep water.
True
Fill in the blank: The area most affected by an earthquake is called the _____ zone.
epicentral
What demographic groups are most vulnerable during earthquakes?
Children, the elderly, and people with disabilities.
Multiple Choice: Which of the following can be a long-term effect of a tsunami?
Displacement of communities
What is the term for the shaking intensity experienced during an earthquake?
Ground motion
True or False: Tsunamis can be predicted with high accuracy.
False
Fill in the blank: The _____ of a tsunami is the point where it originates.
epicenter
What kind of infrastructure is particularly vulnerable to earthquakes?
Older buildings and bridges.
Multiple Choice: Which of the following actions can help mitigate tsunami damage?
Building sea walls
What is the term for a large earthquake that can generate a tsunami?
Megaquake
True or False: Earthquakes can trigger landslides.
True
Fill in the blank: Emergency _____ plans are crucial for communities at risk of tsunamis.
evacuation
What role do government agencies play in earthquake preparedness?
They develop and implement emergency response plans.
Multiple Choice: Which is a common psychological effect on survivors after a tsunami?
Post-traumatic stress disorder (PTSD)
What is the primary cause of most tsunamis?
Underwater earthquakes.
True or False: Tsunamis can occur in any ocean.
True
Fill in the blank: The _____ of a tsunami can be affected by coastal geography.
height
What is one way communities can prepare for earthquakes?
Conducting regular earthquake drills.
Multiple Choice: Which of the following is NOT a method of tsunami warning?
Social media alerts
What is the impact of earthquakes on economic stability?
They can cause significant financial loss and hinder recovery efforts.
