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Home » FAQ on Earth Sciences » Earthquakes and Faults
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Climate

  • Sea Levels
    • Why will sea level rise not be the same everywhere?
    • How can we date corals?

Geology and Tectonics

  • Geology
    • How do we know the age of the seafloor?
    • Why is the seafloor so recent and the continental crust so old?
    • Where do we find the oldest continental rocks and the oldest seafloor?
    • What are the different types of rocks?
    • What is a fossil and what are they used for?
    • What are hydrothermal vents, and why do we find them along mid-ocean ridges?
  • Seismology
    • What is a seismic wave?
    • What is the difference between body waves and surface waves, and between P-waves and S-waves?
    • Why can't S-waves travel through liquids?
    • How far can seismic waves reach?
    • Why do P-waves travel faster than S-waves?
    • Why is the interior of the Earth hot?
    • What is the magnetic field of the Earth?
  • Earthquakes and Faults
    • Why do tectonic plates move?
    • Brief history of the plate tectonics theory
    • Before colliding with Asia, where was India?
    • What is an earthquake?
    • What is the highest magnitude an earthquake can reach?
    • What are the biggest historical earthquakes?
    • Why do earthquakes happen in clusters?
    • Where are earthquakes expected in the world, especially in Asia?
    • What is a supercontinent?
    • Are all the faults on Earth active?

Natural Hazards, Risk, and Societies

  • Climate Change
    • What is global warming and what is its main consequence?
    • How can human activities cause climate change?
    • Why do urbanisation and deforestation make flooding more likely?
  • Earthquake Hazards
    • Is Singapore threatened by earthquakes?
    • Can we predict earthquakes?
    • Why does a building on solid bedrock resist better to an earthquake than a building on sediment or reclaimed land?
    • Why does a building with base isolation resist better to an earthquake than a building without base isolation?
    • Why does a building with full bracing resist better to an earthquake than a building with no bracing?
  • Impacts of Volcanic Hazards
    • What are the principal signals of a volcanic unrest? How can we forecast volcanic eruptions?
  • Tsunamis
    • Where is a tsunami most likely to happen?
    • Can Singapore be affected by a tsunami?
    • Can animals sense an impending tsunami?
    • What should we do during a tsunami?
    • Why do trees seem to resist more to tsunamis than houses?
    • Why does a boat at sea experience a tsunami differently from a boat near the shore?

Volcanoes

  • All About Volcanoes
    • What is the difference between magma and lava?
    • Is lava always liquid?
    • Is the Earth’s mantle made of liquid magma?
    • What does a magma chamber look like?
    • What are the largest eruptions in the world?
    • Are earthquakes and volcanic eruptions related?
    • Where can we find volcanoes on earth?

Miscellaneous

  • Miscellaneous
    • Why are there mass extinctions?
    • How did life appear on earth?
    • How does photosynthesis work?
    • What is GPS?
    • What is gravity?
    • What is the big bang?
    • How do we know the age of the earth? What about the age of the solar system?

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