Pautan di bawah boleh digunakan sebagai contoh rujukan:
Why do Earthquakes Happen?
http://www.geo.mtu.edu/UPSeis/why.html
Plate tectonicsÂ
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/earth/earthscrustrev2.shtml
Volcanoes and earthquakes
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/earth/earthscrustrev4.shtml
When the Earth Rumbles (fail .pdf)
www.interacademies.org/File.aspx?id=27222&v=8494de13
How are Volcanoes and Earthquakes related
http://volcano.oregonstate.edu/how-are-volcanoes-and-earthquakes-related
Are Earthquakes and Volcanic Eruptions Related?
Tsunamis 101
https://www.nationalgeographic.com/environment/natural-disasters/tsunamis/
Tsunami
https://oceanservice.noaa.gov/facts/tsunami.html
Richter Scale
https://earthquake.usgs.gov/learn/glossary/?term=Richter%20scale
Different Types of Volcano
http://www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/volcanoes_rev3.shtml
Where do Earthquakes Happen?