Here's a complete, educational solution to the worksheet, written at an elementary or middle school level:
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Cause and Effect: Earthquakes
Cause:
*Plates on the earth’s surface rub together. An earthquake occurs.*
Effects (fill in the 3 boxes):
1.
Buildings and roads can crack or collapse.
*(When the ground shakes violently, structures not built to withstand tremors can fall apart.)*
2.
Fires may start if gas lines break or electrical wires spark.
*(Broken utility lines are common after quakes — especially in older cities like San Francisco.)*
3.
Tsunamis can form if the earthquake happens under the ocean.
*(The sudden movement of the seafloor pushes water upward, creating giant waves.)*
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What were the effects of San Francisco’s water system being destroyed?
> When San Francisco’s water system was destroyed during the 1906 earthquake, firefighters couldn’t get water to put out fires. As a result, fires spread rapidly and burned for days, destroying even more buildings than the shaking itself. This made the disaster much worse.
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What type of damage does an 8.0–9.0 earthquake cause?
> An 8.0–9.0 earthquake is *extremely powerful*. It can destroy entire cities, cause landslides, break bridges and highways, trigger tsunamis, and kill thousands of people. Even well-built modern buildings can be damaged or collapse.
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What causes a tsunami?
> A tsunami is usually caused by a large underwater earthquake that suddenly moves the ocean floor. Volcanic eruptions or landslides under the sea can also cause tsunamis.
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What are possible effects of a tsunami?
> Tsunamis can flood coastal areas with walls of water up to 100 feet high. They sweep away houses, cars, trees, and people. They can travel far inland, destroy ports and beaches, and leave behind mud, debris, and pollution. Many people can drown or be injured, and recovery takes years.
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✔ Summary Tip for Students:
Earthquakes happen when tectonic plates move. Their effects can be direct (shaking, broken buildings) or indirect (fires, tsunamis). The bigger the quake, the worse the damage — especially if infrastructure like water systems fails.
Let me know if you’d like this turned into a printable answer key or simplified further for younger students!
Parent Tip: Review the logic above to help your child master the concept of earthquake worksheet.
