This course is very strong on the sciences of volcanic ash observation and will help in your studies to learn more about how hazards of volcanoes are determined.

I have a master's degree in Geology, and have been teaching it for 16 years. I found this course EXTREMELY frustrating. It assumed that I already knew several things. For example, what those little arrow/feather things were to indicate wind direction. No clue. The difference between polar orbits and equatorial geosynchronous orbits? It was mentioned that there are these two types, but that's it. Verbal explanations were given for questions, but not annotated on graphics. Quite frankly, I guessed on most of the answer. I should not have to go to outside sources in a course to get the answers. A well designed course should lead the student to the correct answer.

For me personally, it is somewhat difficult to get a feel for the different products without hands on experience. Plan on re-doing this particular section of this lesson.

Question 1 on the quiz is not working properly. I used multiple computers with multiple browsers (IE, Firefox, and Chrome) but had no luck with it.

very useful course

this is educational accridation for me as well as on the job training.

This module is a bit dry, but the over all course is good.

This course is good. like the volcano image