## Week 5 Plate Tectonics

2.7_9_aep_library_research_volcanoes_and_plate_tectonics.docx | |

File Size: | 103 kb |

File Type: | docx |

## Task 1 Library Research The Dynamic Earth

This research is designed to be completed in 50 minutes in the Library.

Choose one question, make notes and diagrams.

Share your document with the two other group members.

Choose one question, make notes and diagrams.

Share your document with the two other group members.

## Task 2 - Class discussion using the research questions above.

## Task 3 - Earthquakes and plate boundaries

## The image below is a screen shot from the App *Quakefeed*. It gives real time information about earthquakes. The numbers are the value of the earthquake on the Richter Scale.

The green lines represent convergent plate boundaries, the red lines represent divergent plate boundaries, the orange lines represent transform plate boundaries.

The image to the right is a graph representing the values of earthquakes on the Richter Scale.
- What do the numbers on the X-Axis represent?
- What is the relationship of each number to its previous number and to the one after it?
- What do the numbers on the Y-Axis represent?
- What is the relationship of each number to its previous number and to the one after it?
The Richter scale is a logarithmic scale. For example a earthquake of magnitude 7 is ten times as strong as an earthquake of magnitude 6. |

The image below is of seismograph.
A seismograph is an instrument that records the waves sent out by earthquakes. |
The image below is of a Seismogram.
A seismogram is a printout of the record of the earthquakes waves. |

## Task 4

Watch these short videos to gain an understanding of the mechanism of seafloor- spreading, subduction and earthquakes. Take notes as neccessary.

Past and Future Continents