WONDER #769: What Causes an Avalanche?

Question 1 of 3

Which of the following is NOT a cause of avalanches, according to this Wonder?

1. Bird migration
2. Earthquakes
3. Movements of animals
4. New snow or rain

Question 2 of 3

When do avalanches usually occur?

1. Winter
2. Spring
3. Fall
4. Both a and b

Question 3 of 3

This Wonder was mostly about...

1. why skiing is the best winter sport there is.
2. the causes and signs of avalanches and what you should do if you're caught in one.
3. how human actions can cause avalanches.
4. how to "swim" through the snow to escape an avalanche.

Check your answers online at https://www.wonderopolis.org/wonder/what-causes-an-avalanche.