Intro: What is an earthquake?Intro: What is an earthquake?

Remember Plate Remember Plate Tectonics Tectonics –– Peeled Peeled Orange Orange –– Curst of Curst of earth is like orange earth is like orange peel and can move peel and can move around. (1)around. (1)

Intro: What is an earthquake?Intro: What is an earthquake?

Earthquakes happen Earthquakes happen because of a sudden because of a sudden slip on a fault in the slip on a fault in the earthearth’’s surface where s surface where the rock on one side the rock on one side moves up, down, or moves up, down, or sideways relative to sideways relative to the other side.(2) the other side.(2)

Intro: What is an earthquake?Intro: What is an earthquake?

An earthquake is felt as An earthquake is felt as a sudden, rapid shaking a sudden, rapid shaking on the surface of earth. on the surface of earth. This shaking can last a This shaking can last a few seconds or even a few seconds or even a few minutes. The few minutes. The motion causes waves motion causes waves that moves through that moves through Earth. (3)Earth. (3)

Intro: What is an earthquake?Intro: What is an earthquake?

Earthquakes are Earthquakes are detected with detected with instruments that instruments that measure and measure and record the seismic record the seismic waves. (4)waves. (4)

How do you measure earthquakes? How do you measure earthquakes?

Richter Scale (If Richter Scale (If Time) Time) –– Each Each number is 10 number is 10 times strongertimes stronger

How do you measure earthquakes? How do you measure earthquakes? 5.0 5.0 —— If you are in a car, it may rock. Glasses and If you are in a car, it may rock. Glasses and

dishes may rattle. Windows may break.dishes may rattle. Windows may break. 4.0 4.0 —— Buildings shake a little. It feels like a truck is Buildings shake a little. It feels like a truck is

passing by your house.passing by your house. 3.0 3.0 —— You may notice this quake if you are sitting You may notice this quake if you are sitting

still, or upstairs in a house. A hanging object, like a still, or upstairs in a house. A hanging object, like a model airplane, may swing.model airplane, may swing.

2.0 2.0 —— Trees sway. Small ponds ripple. Doors swing Trees sway. Small ponds ripple. Doors swing slowly. But you can't tell an earthquake is to blame.slowly. But you can't tell an earthquake is to blame.

1.0 1.0 —— Earthquakes this small happen below ground. Earthquakes this small happen below ground. You can't feel them.You can't feel them.

How do you measure earthquakes? How do you measure earthquakes? 9.0 9.0 —— Causes complete devastation and large-scale Causes complete devastation and large-scale

loss of life. loss of life. 8.0 8.0 —— Very few buildings stay up. Bridges fall down. Very few buildings stay up. Bridges fall down.

Underground pipes burst. Railroad rails bend. Large Underground pipes burst. Railroad rails bend. Large rocks move. Smaller objects are tossed into the air. rocks move. Smaller objects are tossed into the air. Some objects are swallowed up by the earth.Some objects are swallowed up by the earth.

7.0 7.0 —— It is hard to keep your balance. The ground It is hard to keep your balance. The ground cracks. Roads shake. Weak buildings fall down. cracks. Roads shake. Weak buildings fall down. Other buildings are badly damaged.Other buildings are badly damaged.

6.0 6.0 —— Pictures can fall off walls. Furniture moves. In Pictures can fall off walls. Furniture moves. In some buildings, walls may crack.some buildings, walls may crack.

EarthquakesEarthquakes in Japan in Japan

One of the most powerful earthquakes ever One of the most powerful earthquakes ever recorded struck on Friday 11 March off the north recorded struck on Friday 11 March off the north eastern coast of Japan. It caused widespread loss eastern coast of Japan. It caused widespread loss of life and severe damage. The earthquake also of life and severe damage. The earthquake also triggered a tsunami, a destructive wave of water triggered a tsunami, a destructive wave of water that washed away everything in its path - homes, that washed away everything in its path - homes, buildings, vehicles and people. buildings, vehicles and people.

Tsunami in JapanTsunami in Japan

Days after the Days after the event, the exact event, the exact extent of the loss extent of the loss of life, damage of life, damage and personal and personal suffering is suffering is unknownunknown. .

Taiwan Earthquake Density Map

Activity 1:Crises in Japan Ripple Activity 1:Crises in Japan Ripple Across the Global Economy Across the Global Economy

Activity 2Activity 2

Click the following link to launch the Click the following link to launch the earthquake simulation website:earthquake simulation website: http://dsc.discovery.com/anthology/unsolvedhistory/earthquake/interactive/interactive.html

Activity 3 : Sentence pattern Activity 3 : Sentence pattern If you are in a lift, you would get out of it. If you are in a lift, you would get out of it. If you are near a desk, you would get under it. If you are near a desk, you would get under it. If you are on a bus, you would hold tight onto a strap or If you are on a bus, you would hold tight onto a strap or

rail. rail. If you are standing by a cliff, you would move away. If you are standing by a cliff, you would move away. If you are driving a train, you would slow down or stop. If you are driving a train, you would slow down or stop. If you are riding a bike, you would get off it. If you are riding a bike, you would get off it. If you near a building site, you would move away from If you near a building site, you would move away from

large cranes. large cranes. If you were cooking a meal, you would turn off the heat. If you were cooking a meal, you would turn off the heat.