version 1.0 damburst activity 1 disaster a teaching sequence from the catastrophe unit cracking...
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version 1.0
DamburstActivity 1 Disaster
A teaching sequence from the Catastrophe unit
cracking science!
Activity from the Catastrophe unit © upd8 wikid, built by cracking science 2009 This page may have been changed from the original
2
To use different sources of information to decide on possible causes of a dam burst.
3Engage
Scary stuff, isn’t it?
That kind of thing happens for real. It’s my job to work out why, so we can stop it happening again.
Are you ready to join my team?
4Engage
Get your bags packed. We’re off to Asia.
Engage
Two days later, at the Indostan Royal Hotel
Quick! Go and unpack. Be back at 9 pm sharp to discuss what we know about the dam burst.
Read the articles first.5
Engagediscuss
SS16
7Elicit
9 pm – at the Indostan Royal Hotel
OK. Here’s what
we know about the dam so far…
8Elicit
The Sefin Dam was built across the Sefin River to create a reservoir.
Reservoir
Dam
The reservoir stores rain that falls during wetter times of the year so that there is a supply of water for drier periods.
9Elicit
Spillway This passes water safely over the dam when the reservoir is full.
Reservoir
Dam
10Elicit
It was an embankment dam.
The walls were built from pieces of rock quarried locally.
11Elicit
Hidden inside was a core made out of concrete.
The dam sat on a natural foundation of rock.
12Elicit
OK. Any ideas why this dam burst?
discuss
13Elicit
14Elicit
Thanks for your ideas yesterday. Overnight,I've scoured records, reports and websites.
It seems there are eight main possible causes for the dam burst.
Which causes shall we investigate further?
Can we discount any?
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Possible cause 1: There was a build up of sediment in the reservoir.
Elicit
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Possible cause 2: There was a landslide into the reservoir.
Elicit
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Possible cause 3: There was an earthquake.
Elicit
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Possible cause 4: The dam was built on unsuitable foundations.
Elicit
19Elicit
Possible cause 5: The dam was built from unsuitable materials.
20Elicit
Possible cause 6: The waterproof core cracked.
21Elicit
Possible cause 7: The spillway got blocked.
22Elicit
Possible cause 8: Terrorists attacked the dam.
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We need to decide which causes to investigate further.
Elicit
Are there any we can discount?
24Elicit
1 There was a build up of sediment in the reservoir.
2 There was a landslide into the reservoir.3 There was an earthquake.4 The dam was built on unsuitable
foundations.5 The dam was built from unsuitable
material.6 The waterproof core cracked.7 The spillway got blocked.8 Terrorists attacked the dam.
Possible causes of the Sefin Dam burst
24discuss
SS