This is a short animation to help you understand how glaciers are formed.
This is the interactive activity we used in class.
Watch this video to learn more about the use of seismic waves to infer the composition of the inner earth. This is a good video to help you understand how seismic waves were used to infer how the earth is composed. This goes deeper than what we are learning in class, a good resource to challenge yourself!
This video is a good introduction to the composition the inner earth.