These are smaller quakes produced after a major quake that are caused by rocks shifting to new positions.
What are aftershocks?
Australia, Siberia and California are some of them.
What are the areas hit hardest by wildfires?
This is a ring of clouds that surround the eye.
What is the eye wall?
This is the underground point of origin of an earthquake, where the rocks break and move.
What is the focus?
They are babies, pregnant women, elderly people and people with respiratory disorders.
Which people are most at risk of being harmed by breathing in smoke from wildfires?
This is the worst hurricane that has ever hit Toronto.
What is Hurricane Hazel, in 1954?
This swirling cloud is the first sign of potential tornadic activity.
What is a funnel-shaped cloud?
This has been happening since the 1980s.
The area burned by wildfires has been increasing each year since what decade?
These are the two things that wildfires need in order to start.
What are an ignition source (such as a spark) and oxygen?
This is called a superbloom.
What are thousands of wildflowers that bloom in an area recovering from a wildfire?