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Earthquakes

Learn about why earthquakes occur, how they are measured, and how to prepare for them. Follow Dora's adventure in San Francisco after a powerful earthquake hits the city.

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Earthquakes

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  1. Earthquakes Lesson Objectives: To understand why earthquakes occur To understand how we measure earthquakes. To understand how to prepare/plan for earthquakes

  2. Can you help me find my best mate Boots? Earthquakes

  3. WE FOUND HIM!!! Now, lets go and see Granny she lives in San Francisco.

  4. I Stole Your Bootsy mwahahaha! What happened to the city?!?!

  5. Dora, you shouldn’t be here! A dangerous earthquake happened and almost everything was destroyed! They said it was a 7.1 whatever that means. Granny, What happened to the city?!?

  6. Snip, snip,snip Because an earthquake happened and it’s not safe STOP!!! YOU CANOT GO IN THERE!! Why officer? Okay mate ;) What caused it?

  7. Its dangerous here! Most earthquakes happen along plate margins or boundaries. Earthquakes happen when two plates either collide, pull apart, overlap or rub against each other! OUCH! WHAAAAA? Dora, STOP!!

  8. NO! You will never have boots back! DORA!! BOOTS!

  9. Activity 1: Cause of Earthquakes • Remember the tectonic plates from last lesson? • When these giant plates meet tension builds up and when it gets released we get earthquakes. • clip

  10. Activity 1: Cause of Earthquakes • Copy and complete this sentence adding the right missing word from the box below. E___________ occur when t________ builds up between two tectonic p______ is released causing the plates to move v_________. plates violently Earthquakes tension

  11. Activity 2: Location, location Add Focus and Epicenter to your glossary • Focus - The place where the plates move. • Epicenter – The place on the surface directly above the focus.

  12. Activity 2: Location, location “The faster you try and throw a ball the less accurate the throw” (speed-accuracy trade off) Write your own description of how distance from the epicentre affects how dangerous an earthquake is.

  13. Activity 3: Measuring earthquakes • Clip Add the word magnitude to your glossary. Copy and complete this sentence: The R_______ scale is used to calculate the m___________ of an earthquake. This means how much energy was released by the e____________.

  14. Activity 4: Planning • We cannot predict if an earthquake will occur, but we can prepare for it. One of the things to do is to make an earthquake emergency kit. Make a list in your exercise book of ten things you think you should have in your earthquake kit (e.g. water) • Peer assess your earthquake lists.

  15. Activity 4: Planning • Earthquake drill • Now its your turn. When your teacher gives you the signal you must: ‘drop, cover and hold’.

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