EARTHQUAKES By the end of the lesson I will know: How and why earthquakes occur. The key terms linked to earthquakes. How earthquakes are measured and what the different strengths mean.

EARTHQUAKES!  Take a new page and write the title Earthquakes and put the date in the margin.  In the middle of the page write the word earthquake and put a circle around it.  Take a new page and write the title Earthquakes and put the date in the margin.  In the middle of the page write the word earthquake and put a circle around it.

Earthquake

Earthquake clips  Earthquake clip 1  Earthquake clip 2  (both in Earth Forces video file)  Earthquake clip 1  Earthquake clip 2  (both in Earth Forces video file)

Earthquake

Earthquake survival.  Part 1:  What do you do when an earthquake strikes?  (1) Run outside away from the building you are in.  (2) Get under the nearest table.  (3) Stand under the nearest doorway.  Part 1:  What do you do when an earthquake strikes?  (1) Run outside away from the building you are in.  (2) Get under the nearest table.  (3) Stand under the nearest doorway.

 Earthquake clip:  What do you do when an earthquake strike?  Earthquake clip:  What do you do when an earthquake strike? Earthquake Clip

Earthquake survival.  Part 2:  Earthquake survival pack.  What 6 items are you going to take with you and why?  Make sure you write this in your jotter.  Part 2:  Earthquake survival pack.  What 6 items are you going to take with you and why?  Make sure you write this in your jotter.

Earthquake survival.  Part 3:  You are going to create the Jordanhill high school earthquake survival guide.  It must have 5 clear steps. Discuss at your table what you would do during an earthquake and when it has finished.  Part 3:  You are going to create the Jordanhill high school earthquake survival guide.  It must have 5 clear steps. Discuss at your table what you would do during an earthquake and when it has finished. Extension Task

Earth Forces True or False? 1. The hottest part of the earth is the Mantle? 2. The coolest part of the earth is the crust? 3. South America and Africa were once joined together? 4. The U.K once had volcanic activity? 5. It is likely that the U.K will have an earthquake in the next 100 years? 6. The earths core is solid? 7. Some of the worlds islands are made up entirely from volcanic rock? 8. There are over 500 volcanoes in the world? 9. The Haiti earthquake was the biggest ever in recorded history? 10. The earth was created by the big bang? 1. The hottest part of the earth is the Mantle? 2. The coolest part of the earth is the crust? 3. South America and Africa were once joined together? 4. The U.K once had volcanic activity? 5. It is likely that the U.K will have an earthquake in the next 100 years? 6. The earths core is solid? 7. Some of the worlds islands are made up entirely from volcanic rock? 8. There are over 500 volcanoes in the world? 9. The Haiti earthquake was the biggest ever in recorded history? 10. The earth was created by the big bang?

Why do earthquakes happen?

Stage 1: Two of the crusts ___________ rub against each other and stick in one place. __________ _builds up as they try and move past each other. Stage 2: Suddenly, the pressure is too much and the plates jerk past each other. The place where this happens is called the ______________. Stage 3: Vibrations go out in all directions through the rocks. These vibrations are called ______________. Stage 4: When the shock waves reach the surface of the _____________ they cause the ground to ______________. The most violent shaking is directly above the focus at a point on the Earths surface called the __________________. Why do earthquakes happen? Stage 1: Two of the crusts ___________ rub against each other and stick in one place. __________ _builds up as they try and move past each other. Stage 2: Suddenly, the pressure is too much and the plates jerk past each other. The place where this happens is called the ______________. Stage 3: Vibrations go out in all directions through the rocks. These vibrations are called ______________. Stage 4: When the shock waves reach the surface of the _____________ they cause the ground to ______________. The most violent shaking is directly above the focus at a point on the Earths surface called the __________________. Plates Pressure Focus Shockwaves Earth Shake Epicentre Shockwaves, pressure, earth, shake, focus, epicentre, plates

Measuring and recording earthquakes. Seismometer Seismograph

Measuring and recording earthquakes. The Richter scale 1 = Only felt by recording instruments. 2 = Felt by a few people especially in tall buildings 3 = Felt indoors, like a truck passing by 4 = Felt by most, windows shake, objects fall over/break 5 = Damage to weaker buildings 6 = Walls, monuments, chimneys, bookcases fall. 7 = Mostly all structures damaged, ground cracks, landslides are caused. 8 = The ground moves like a wave, buildings fall, massive damage.

ent/seismology/richterscale.html

Can you guess the strength of these earthquakes? Magnitude?

7.0 – 7.3

5.5 – 6.1

Over 8.1

Key word Bingo! What you need to do!

Key word Bingo! Mantle The Big BangThe CrustRing of Fire EruptionActive Arthur Seat Oceanic Dormant Mid Atlantic Ridge African Rift Valley ChileHaiti CoreVolcanoEarthquake Lava Plates