Science: What are some environmental risks of volcanoes?

This is a news report that FOX news did during 2010 in which a volcano kept air travel from being productive. They brought on a Physicist to discuss environmental issues related to volcanic eruptions.

Subject:  Earth Science
Grade Level:  7-12
Length:  6:11

Science: What are the types of lava flows?

This educational science video shows some of the different types of lava flows. There really aren't any word in the video, but it has some excellent quality photography. If you are discussing lava in the classroom, then this video would be an excellent introduction.

Subject: geology
Grade level: K-12
Length: