Lesson Plan: Mudslides: How Much Do We Really Know?
II. While Reading Activities
- fatal |ˈfātl| adjective-causing death: a fatal accident.
- confirmed |kənˈfərmd| verb [ with obj. ] establish the truth or correctness of (something previously believed, suspected, or feared to be the case): if these fears are confirmed, the outlook for the economy will be dire.
- unstable ˌənˈstābəl| adjective ( unstabler, unstablest ) prone to change, fail, or give way; not stable: the unstable cliff tops
- increments |ˈiNGkrəmənt, ˈin-| noun an increase or addition, esp. one of a series on a fixed scale: the inmates’ pay can escalate in five-cent increments to a maximum of 90 cents an hour.
- precipitation |priˌsipəˈtāSHən| noun rain, snow, sleet, or hail that falls to the ground.
- eroding |iˈrōd| verb (of wind, water, or other natural agents) gradually wear away (soil, rock, or land): the cliffs have been eroded by the sea.
- collapsed |kəˈlaps| verb [ with obj. ] cause (something) to fall in or give way: it feels as if the slightest pressure would collapse it.
- terrain təˈrān| noun-a stretch of land, esp. with regard to its physical features: they were delayed by rough terrain.
- Strategies |ˈstratəjē| noun ( pl. strategies ) a plan of action or policy designed to achieve a major or overall aim: time to develop a coherent economic strategy | shifts in marketing strategy.
- pending |ˈpendiNG| adjective-about to happen; imminent: with a presidential election pending, it would be wrong to force the changes through now | the pending disaster.
- A fatal mudslide in Washington State points to the dangers of heavy rainfall.
- On Saturday morning, a mudslide moved down the Stillaguamish River.
- This area has had slides in small increments over the last several years,
- A mudslide is also called a debris flow.
- It just takes a pull of gravity.
- Mudslides are also often triggered by earthquakes
- Strategies to decrease the risk of mudslides include draining water off hillsides.
- This isn’t a situation where the authorities should have done something to prevent it.
- The CDC recommends that people exercise caution around steep slopes during rainfall.
- Immediate signs of a pending slide include tilting trees.
Source: New Oxford American Dictionary
- F- A fatal mudslide occurred in rural northwestern Washington State over the weekend.
- NA-The missing people are mainly children.
- F- This isn’t a situation where the authorities should have done something to prevent it.
- T- A mudslide is also called a debris flow.
- T- Mudslides occur after water rapidly saturates the ground on a slope, such as during a heavy rainfall.
- F- Mudslides tend to happen during wet seasons.
- T-In the United States, mudslides and landslides result in an average of 25 to 50 deaths a year.
- T-Strategies to decrease the risk of mudslides include draining water off hillsides.
- T-Immediate signs of a pending slide include tilting trees and sudden increases or decreases in rivers.
- NA-Mudslides will occur in the future.
Structure and Usage
I. 2. The mudslide also destroyed about 30 homes.
II. 2. A mudslide is also called a debris flow.
III. 3. The CDC recommends that people exercise caution around steep slopes during rainfall
IV. Listening Activity
Video Clip: Washington Mudslide Kills at Least 14 Across A Mile
- T- At the time of this broadcast, there were 25 houses and families destroyed.
- T- The wall of dirt that came down was a mile and a half wide.
- F- There had been a previous slide in 2006 that brought half of the hill down.
- T- The term “clear cut” means all vegetation is cut down to the earth.
- F- Some contributing factors to the mudslide were heavy rainfall, logging activity, and erosion of the earth by the river.
- F-The mudslide was compared to a tsunami.
- NA-Ways to prevent future mudslides were discussed.
- F- The speakers felt that this disaster had not received enough news coverage.
- T- This slide has been having trouble for the past 20 years.
- T- From the video you can guess that geologists are people who study the earth’s structure.