Volcanoes and Earthquakes!

Warm Up

• Why do you think magma rises? Consider an ice cube floating at the top of a glass of water

• Objective:– SWBAT

• Describe at least two of the three types of volcanoes and how they form

• Agenda:– Weather– Guided Notes: 3 Types of Volcanoes– Volcano Articles– Raging Planet: Volcanoes– Closing

• Homework:– Finish Article Questions and transfer answers to Chart

Weather

Guided Notes: 3 Types of Volcanoes• Shield

– Forms on hot spots– Broad base, small incline– Enormous height (including base below sea level)– Thin lava makes it the least explosive– EX: Mauna Loa in Hawaii

• Cinder– Cone-shaped mound of ash– Smallest – Forms on sides of other volcanoes– Forms in groups– EX: Capulin in New Mexico, Mount Paricutin in Mexico

• Composite (Stratovolcano)– Creates lahars (mudflows/landslides)– Forms from layers of lava (from many eruptions)– May remain dormant for long periods between eruptions– Thick lava makes it the most explosive – EX: Mount St. Helen’s in Washington, Mount Vesuvius in Italy

Volcano Articles

• Working individually, read the following articles and answer the accompanying questions

Raging Planet: Volcanoes

• While watching the Raging Planet: Volcanoes, answer the questions on your worksheet

Warm Up

1. How does a volcano’s amount of activity relate to it’s explosiveness?

2. How does a volcano’s magma temperature relate to it’s destructive potential?

• Objective:– SWBAT

• Explain why scientist’s study seismic waves

• Agenda:– Earthquake Survival– Notes: Seismic Waves– Slinky Demonstration– If time: Finish Raging Planet: Volcanoes– Closing

• Homework:– Extraterrestrial Volcanoes

1999 Earthquake in Adapazari, Turkey

• What kind of destruction can you see?

• What kind of destruction may have occurred that you cannot see?

Earthquake Survival Activity

• Ms. McGowan will split you into groups of 4• In your groups, take turns reading the

Earthquake Survival Script• Then, work together to determine what

actions you would take post-earthquake

Notes: Seismic Waves

• Body Waves—travel through Earth’s interior– P waves

• Particles move parallel to wave• Travels through anything• Fastest speed

– S waves• Particles move perpendicular to wave• Only travels through solids• Medium speed

• Surface Waves—travel through Earth’s surface• Slowest speed

Seismic Waves Slinky Demonstration

• Follow along on your Seismic Waves Demonstration Worksheet as Ms. McGowan demonstrates seismic waves with her slinky

Raging Planet: Volcano

• Take out your Raging Planet: Volcano Questions Sheet

• Answer your questions as we finish watching the video

• Follow along as Ms. McGowan reviews the answers

Closing

• Surface waves travel the slowest. Are they still dangerous? Provide support for your answer.