How do Volcanoes change

the Earth’s surface?

Volcanoes• In the Earth’s mantle,

there are pockets of hot, liquid-like rocks and gases called magma.

• As heat and pressure builds up in these pockets (chambers) the gases expand.

Volcanoes• The increasing

pressure forces the magma up the volcano’s pipe and out the opening of the volcano (crater).

• Once the magma reaches the surface of the Earth it is called lava.

• Once all the pressure is released, the volcano stops erupting.

Volcanic Activity

Volcanoes are both constructive and destructive forces that change the Earth’s surface.

Constructive

They can “add to” the landforms of mountain ranges and…

Volcanic Activity

create islands in the middle of the ocean.

This volcano has been erupting continuously since January 1983. Lava is pouring down the edge of the island and into the ocean, becoming solid rock.

Hawaii’s Kilauea Volcano

Land is being added here!

This “new land” has been growing and extending the edge the Hawaiian Islands and into the ocean each year.

Hawaii’s Kilauea Volcano

Effects of Volcanoes and Earthquakes• Scientists cannot

control volcanic eruptions and earthquakes• However, they can

warn people when they believe they are most likely to occur

Predicting Earthquakes and Volcanoes

• Devices called seismographs can detect vibrations during an earthquake. • Seismologists study seismic waves

• The record made by a seismograph is called a seismogram

• http://www.teachersdomain.org/resource/ess05.sci.ess.earthsys.seismograph/

• http://www.scholastic.com/browse/article.jsp?id=4892

Using Science and Technology to Keep People Safe

• Seismographs also help scientists predict when tsunamis and volcanoes will occur

• Tsunami – a huge wave caused by an earthquake under the ocean

• Seismographs watch for underwater earthquakes to predict when one will occur

• http://www.whoi.edu/home/interactive/tsunami/indexEnglish.html

https://www.youtube.com/watch?v=1PVMs2NSdmc

Bill Nye: Earthquakes and Volcanos Video (7 min)

https://www.youtube.com/watch?v=ph7Eczs-nTI

Earthquakes since 2000 time-lapse map

Volcano Infographic

Volcano InfographicTask: Create an infographic using what you’ve learned about volcanoes.

Due Date: Friday, September 8th, 2017

Requirements:• Create your infographic using any of the websites listed in the content library of your

class notebook.

• Infographics should be creative.

• The infographic should be submitted as a hard copy (printed out) and in Office365 (upload and share with me).

• Choose a topic for your infographic:• How do volcanos change the Earth’s surface?• Are volcanoes constructive, destructive, or both?• Types of volcanoes• Interesting facts about volcanoes

Grading: Infographics will be graded using the attached rubric

Volcano Infographic rubric

No Evidence (0) Limited (1) Progressing (2) Meets (3)

ContentKnowledge

The student does not demonstrate anunderstanding of volcanoes.

The studentdemonstrates a limited understanding of volcanoes.

The studentdemonstrates some understanding of volcanoes.

The studentdemonstrates a strong understanding of volcanoes.

ProjectRequirements

The student’s infographic meets none of the requirements of the project.

The student’s infographic meets few of the requirements of the project.

The student’s infographic meets several of the requirements of the project.

The student’s infographic meets all of the requirements of the project.

Creativity The student’s infographic design demonstrates nocreativity and/or effort.

The student’s infographic design demonstrates a limited amount of creativity and effort.

The student’s infographic design demonstrates somecreativity and effort.

The student’s infographic design demonstrates an appropriate amount ofcreativity and effort.

Name: _________________________________________________________________________________ Score: _________________________

Comments:

Infographic Example