1. Warm-up (Page 91)
Volcanic mountains are found in different shapes around the world. What do you believe causes these mountains to form differently?

2. Volcanic Landforms

3. *formed by thin layers of flowing lava (Pahoehoe lava)
Shield volcano – wide, gentle sloping mountain.
*formed by thin layers of flowing lava (Pahoehoe lava)
Mauna Kea volcano - Hawaii

4. 2. Cinder cone – small, steep, cone-shaped mountain
*formed by piles of ash & cinders
Mt. Etna - Italy
                                                    
Pu’uka Pele -Hawaii

5. 3. Composite volcano – tall, rugged-shaped mountain (stratovolcano)
*formed by layers of pyroclastic flows and thin lava flows.
Mount Hood - Oregon

6. Caldera – a huge hole at the top of a volcanic mountain caused when the mountain collapses inward

7. Mount Mazama – Oregon (Wizard Island)

10. Life Stages of a Volcano
1. Active – erupting or will erupt in the near future (a live volcano)
Mount St. Helens

11. Mount Egmont (New Zealand) last erupted in 1755
2. Dormant – a sleeping volcano, will erupt in the distant future (within a few hundred years)
Mount Egmont (New Zealand) last erupted in 1755

12. 3. Extinct – will not erupt again (a dead volcano)
Mt. Kilamanjaro - Africa

13. Review
1. Types of volcanic landforms

14. Review
2. What is an active volcano?
3. What is a dormant volcano?
4. What is an extinct volcano?
Volcanoes Test on Friday