Post on 23-Dec-2015
Earthquakes
Lesson Objectives:•To understand why earthquakes occur• To understand how we measure earthquakes.•To understand how to prepare/plan for earthquakes
Can you help me find my best mate
Boots?
WE FOUND HIM!!! Now, lets go and see Granny she lives in
San Francisco.
What happened to the city?!?!
Granny, What happened to the city?!?
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.
STOP!!! YOU CANOT GO IN
THERE!!Why officer?
Because an earthquake happened and it’s not
safeOkay
mate ;)What
caused it?
Snip, snip,snip
Dora, STOP!!OUCH!
WHAAAAA?
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!
BOOTS!
DORA!!
NO! You will never have boots back!
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
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_________.
Earthquakesviolently
plates
tension
Activity 2: Location, location
• Focus - The place where the plates move.
• Epicenter – The place on the surface directly above the focus.
Add Focus and Epicenter to your glossary
“The faster you try and throw a ball the less accurate the throw”
(speed-accuracy trade off)
Activity 2: Location, location
Write your own description of how distance from the epicentre affects how dangerous an earthquake is.
Activity 3: Measuring earthquakes
• ClipAdd 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____________.
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.
Activity 4: Planning
• Earthquake drill
• Now its your turn. When your teacher gives you the signal you must:
‘drop, cover and hold’.