Natural Disasters and Extinct Volcanoes

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Questions and Answers

What are extinct volcanoes?

Extinct volcanoes are those that have been inactive for thousands of years and are not expected to erupt again.

What are tsunamis?

A tsunami is a series of waves onto the sea shore. These waves have a lot of force and can cover long distances without losing much power and energy.

Tsunamis can travel at speeds of 500 km/hr.

False (B)

How can a tsunami be caused?

<p>A tsunami can be caused by an earthquake, volcanic eruption or a landslide.</p> Signup and view all the answers

Tsunamis are very destructive.

<p>True (A)</p> Signup and view all the answers

Where did a disastrous tsunami occur in 2004?

<p>The disastrous tsunami occurred in the Indian Ocean, just off the coast of Indonesia.</p> Signup and view all the answers

Flashcards

Extinct Volcanoes

Volcanoes that have been inactive for thousands of years and are not expected to erupt again.

Tsunami

A huge wave caused by an underwater earthquake, volcanic eruption, or landslide.

What causes a Tsunami?

The force that moves a tsunami wave.

How fast can a Tsunami travel?

The speed at which a tsunami wave travels.

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How high can a Tsunami get?

The height a tsunami wave can reach.

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What area can a Tsunami affect?

The area a tsunami can affect.

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The 2004 Indian Ocean Tsunami

A disaster that caused a devastating tsunami in 2004.

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Where did the 2004 tsunami originate?

The location of the earthquake that caused the 2004 tsunami.

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How does water depth affect the Tsunami?

The effect of water depth on the tsunami wave height.

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What happens to the water before a tsunami hits?

The change in water level before a tsunami arrives.

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What's the difference between extinct and active volcanoes?

The difference between extinct and active volcanoes.

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Where do most earthquakes and volcanoes happen?

The region where earthquakes and volcanoes commonly occur.

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What causes earthquakes and volcanic eruptions?

The force that drives earthquakes and volcanic eruptions.

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What is plate tectonics?

The movement of the Earth's tectonic plates that causes earthquakes.

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What is an epicenter?

The point on the Earth's surface directly above the source of an earthquake.

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What is the focus of an earthquake?

The point inside the Earth where an earthquake originates.

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What is the Richter Scale?

The measurement of the intensity of an earthquake.

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What is an earthquake?

A natural disaster caused by the sudden movement of the Earth's crust.

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What is a volcanic eruption?

A natural disaster caused by release of molten rock and gases from the Earth's interior.

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What is a volcano?

The opening in the Earth's surface from which molten rock and gases are released.

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Study Notes

Extinct Volcanoes

  • Extinct volcanoes haven't erupted in thousands of years and aren't expected to erupt again.
  • Mount Popa in Myanmar is an example.

Other Natural Disasters

  • Earthquakes and volcanoes are examples of other natural disasters.
  • Other types of disasters also exist.

Tsunamis

  • A tsunami is a huge wave of water that moves towards the shore.
  • Tsunamis are caused by a series of waves.
  • These waves travel long distances without losing much power or energy.
  • Tsunami waves can reach 15 meters high and travel at a speed of 800 km/hr.
  • Tsunamis can be caused by earthquakes, volcanic eruptions, or landslides.
  • On December 26, 2004, a powerful earthquake in the Indian Ocean caused a disastrous tsunami.
  • The tsunami affected many countries, including India.
  • Tsunamis are extremely powerful and destructive, affecting the entire ocean basin.

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