Name: ______________________________

Answer the following word problems about volcanoes in the spaces provided, or use the other side of the paper to show your work. *Hint: Drawing a picture can help you figure the problem out.

1. If Mount Redoubt ejected lava 30 m high into the air and nearly hit a jet flying over it, how high was the jet flying above ground if the volcano has a height of 3100 m?  

2. If the height of Mount St. Helens was reduced by 20% from 4000 metres, how high is it now?

3. If Mount Vesuvius left the following measures of ash around Pompei, what is the average measure of the layer of ash? point A: 23 cm, point B: 42 cm, point C: 57 cm, point D: 30 cm, and point E: 13cm?

4. What fraction of Mount St. Helens blew up if its total height of 5000 metres was reduced by 25% after the eruption on May 18, 1980?

5. The highest volcano is Mauna Loa and it has a height of about 9090 metres. Mount St. Helens has a height of about 2490 metres. If the height of Mount Katmai is 1200 metres less than Mauna Loa, how much higher is it than Mount St. Helens?

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