Elective Geography Secondary 3 Express (New)- Plate Tectonics Week 1

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Elective Geog (New)Secondary 3 E/NWeek 1: Living with Tectonic Hazards

2+Target Setting

Mean MSG Grade: 5.0

% Pass: >87.34% (2011 O Levels)

% Distinction: > 15% 11.6% Distinction Sec 2

3+What’s in store for 2013

Admin Changes moving future content to armanalluwie.blogspot.sg using twitter for messaging (@ArmanAlluwie)

Files/ Books to prepare 1 file for GFA (to be submitted) 1 file for Notes/ Handouts 1 book for journals etc.

Holiday Homework?

Colour?

4+Lesson Outcomes

By the end of the lesson, We will be able to compare the different types of

natural hazards.

White Board Discussion

http://www.youtube.com/watch?v=KTYLKLNqEA4

8+Natural Hazards

Definition Naturally occurring event that threatens human lives

and causes damage to property

Tectonic Natural Hazard Caused by plate movements when continental crusts

and ocean floors move Eg. Earthquakes, volcanic eruptions and tsunamis

Climate Related Natural Hazard Caused by severe and extreme weather and climate

conditions Eg. Drought, tropical cyclones and floods

9+Let’s test it out

Classify the following hazards into climate or tectonic hazard

Describe the impact of each hazard

Distribute Handout 2

10+Gas Emissions at Volcan Copahue

http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=80095

11+Gas Emissions at Volcan CopahueThe Chilean National Service of Geology and Mining, reported that the eruption was likely caused by water vaporizing as it interacted with magma rising inside the volcano. Since then, intermittent steam and gas plumes, accompanied by continuing earthquakes was observed. The earthquakes suggest that magma is fracturing rock as it rises from beneath the volcano.

Volcán Copahue is a composite volcano located in the Andes, on the border of Chile and Argentina. This natural-color satellite image shows a blue-tinted gas plume streaming toward the east. The nearest settlement is Caviahue, an Argentinian ski resort.

12+Tropical Cyclone Dumile

13+Tropical Cyclone Dumile

Tropical Storm Dumile formed at the beginning of 2013 in the Indian Ocean, east of Madagascar. The storm moved southward as it strengthened into a tropical cyclone. On January 3, 2013, the U.S. Navy’s Joint Typhoon Warning Center (JTWC) reported that Dumile had maximum sustained winds of 120 kilometers per hour and gusts up to 150 kilometers per hour.

Dumile’s clouds extended over the islands of Réunion and Mauritius but stopped short of Madagascar’s capital city of Antananarivo.

14+Wildfires in Tasmania

15+Wildfires in Tasmania

In January 2013, intense bushfires blazed in Tasmania, an island south of Australia. NASA’s Terra satellite captured this image showing numbers of fires burning across the island on January 7, 2013. Red outlines indicate hot spots where satellites detected unusually warm surface temperatures associated with fires.

Extreme heat and strong winds fueled the fires. Temperatures in Hobart, the capital of Tasmania, soared to a record high of 41.8°Celsius (107.2°Fahrenheit) on January 4. The blazes destroyed more than 100 homes, including many in the small community of Dunalley. More than 100 people were missing after fire tore through the town.

16+Storm turns the Taklimakan Desert white

17+Storm turns the Taklimakan Desert whiteSnow-covered deserts are rare, but that’s exactly what NASA’s Aqua satellite observed as it passed over the Taklimakan Desert in western China on January 2, 2013. Snow has covered much of the desert since a storm blew through the area on December 26.

The Taklimakan is one of the world’s largest—and hottest—sandy deserts. Water flowing into the Tarim Basin has no outlet, so over the years, sediments have steadily accumulated. In parts of the desert, sand can pile up to 300 meters (roughly 1,000 feet) high. The mountains that enclose the sea of sand—the Tien Shan in the north and the Kunlun Shan in the south—were also covered with what appeared to be a significantly thicker layer of snow in January 2013.

18+Activity at Tolbachik Volcano

In late November 2012, Tolbachik Volcano on Russia’s Kamchatka Peninsula began erupting, the first time the volcano has been active in 36 years. Several days later, the volcano remained restless.

Klemetti reported that the eruption in late November occurred along two fissures. In these images, volcanic plumes—likely a combination of ash, water vapor, and other gases—apparently emerge from an east-west crack on the volcano surface. South of the plumes and the lava flow, multiple volcanic cones litter the surface of Tolbachik, casting shadows to the north in the low-angled sunlight.

Tolbachik is a shield volcano—a low-profile, broad structure with a shape resembling an ancient warrior shield.

Class Discussion

22+How good are you with maps?

Refer to page 5 of your textbook

Using the map at the back of your textbook, identify locations of natural hazards and write them into the textbook.

Natural Hazards occur everywhere.

Some areas may be more prone to Natural Hazards.

Impact of Natural Hazards depend on the where these Natural Hazards

occur.

Elective Geog (New)Secondary 3 E/NWeek 1: Living with Tectonic Hazards

Natural Hazards occur everywhere.

Some areas may be more prone to Natural Hazards.

Impact of Natural Hazards depend on the where these Natural Hazards

occur.

26+Natural Hazards

Definition Naturally occurring event that threatens human lives

and causes damage to property

Tectonic Natural Hazard Caused by plate movements when continental crusts

and ocean floors move Eg. Earthquakes, volcanic eruptions and tsunamis

Climate Related Natural Hazard Caused by severe and extreme weather and climate

conditions Eg. Drought, tropical cyclones and floods

27+Lesson Outcomes

By the end of the lesson, we will be able to Describe the internal structure of the Earth (core,

mantle, crust) and tectonic plates Explain the movement of plates

http://www.youtube.com/watch?v=nX2XHw-NB_w

Class Discussion

No Textbooks!

http://www.youtube.com/watch?v=XC5v5ZXTul4

Elective Geography Secondary 3 Express (New)- Plate Tectonics Week 1

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