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How do we know the age of the seafloor?
Image source: Yang Wewe/Unsplash
Where can we find the oldest continental rocks and seafloor?
Image source: Gretarsson
What are the different types of rocks?
Image source: Polina Kovaleva/Pexels
What is a fossil and what are they used for?
Image source: Wes Warren/Unsplash
What are hydrothermal vents and why are they found along mid-ocean ridges?
Image source: NOAA
What is a seismic wave?
Image source: Cheng Mengli
What is the difference between body and surface waves, and between P- and S-waves?
Image source: Shi Xu Hua
Why can't S-waves travel through liquids?
Image source: Bri Schneiter/Pexels
Why is the interior of the Earth hot?
Image source: Martin Sanchez/Unsplash
What is the magnetic field of the Earth?
Image source: Ken Cheung/Unsplash
What is an earthquake?
Image source: Muzli
What is the highest magnitude an earthquake can reach?
Image source: Kerry Sieh/Earth Observatory of Singapore
What are the biggest historical earthquakes?
Image source: Douglas Sprott/Flickr
Where are earthquakes expected in the world, particularly Asia?
Image source: Masahiko Ohkubo/Flickr
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