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Our planets crust is made up of about ___ tectonic plates that fit together like a jigsaw puzzle
These huge slabs of land float on superheated ____, which constantly ____, bumps and grinds each other.
When ________, or rubbing against each other between two plates is violent enough, seismic shock ______ rattle the ground
The most violent type of earthquake is born in a ___________ zone, where one tectonic plate is shoved under another
When subduction happens in the ______ it can create giant unstoppable waves called _______
On average, earthquakes kill _______ people each year
In 2010, the quake in Haiti killed ________ people, so in some years, the death toll can be greater
The magnitude of an earthquake is measured using a _______ scale
In history, the world has only experienced a 10 on the richter scale once.
When you compare hurricanes to tornadoes, hurricanes are ___________
Unlike hurricanes, tornadoes... <select all that apply>
Why do winds on the ground move slower than winds in the air
How do scientists think a tornado is formed?
What scale is used to measure the strength of a tornado
Where do earthquakes take place? <Select all that apply>
What does a Richter scale measure?
Both California and Alaska are located near ____________ which is known for its seismic actvity
Why does Alaska experience stronger and more frequent erthquakes
Which states experience the most lanslides per year
What can trigger a landslide?