question of the day question: what things tend to make water more dense? less dense? answer:...
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Question of the DayQuestion of the DayQuestion of the DayQuestion of the Day
Question: What things tend to make water more dense? Less dense? Answer: … … …
Turn In: - Global Crisis Reading & Q’s- Lab: Properties of Seawater
El Niño
History of El Niño
15th Century settlers to Peru and Ecuador first wrote about El Niño
It is named after Christ, as the warm water current usually arrived in late December
around Christmas
History of El Niño
Coral in the Galapagos show evidence of El Niño events since the mid 1500’s
Changes in air pressure and rainfall have been recorded for over 100 years in Darwin, Australia
What is El Niño?
Changes in the ocean & atmosphere in the south Pacific Ocean
Major changes to weather around the world
Also called ENSO (El Niño- Southern Oscillation)
Western Pacific
EasternPacific
Normal Conditions
Winds & currents move from East to west at the equator
Warmer water accumulates in the western pacific
Normal Conditions
Normal Conditions
In the eastern pacific, colder water from deep in the ocean moves upward to replace the water that has moved west.
This is calledA. UprisingB. UpwellingC. El Niño
Normal Conditions
In the eastern pacific, colder water from deep in the ocean moves upward to replace the water that has moved west.
This is calledA. UprisingB. UpwellingC. El Niño
Normal Conditions
UpwellingA. causes stormsB. causes boat accidentsC. makes more fish to come to the areaD. makes less fish to come to the area
Normal Conditions
UpwellingA. causes stormsB. causes boat accidentsC. makes more fish to come to the
areaD. makes less fish to come to the area
Summary of Normal Conditions
Summary of Normal Conditions
Warm, wet weather in western Pacific (Indonesia)
Cooler, dry weather in eastern Pacific (Peru)
Upwelling causes good fishing off the coast of Peru
El Niño Conditions
Winds blowing from east to west become weaker
Less water moves from east to west (sometimes moves from west to east!)
More warm water in the Eastern Pacific
El Niño Conditions
More warm water in the Eastern Pacific causesA. Less upwellingB. Less fishingC. Changes in weather in the Eastern and
Western PacificD. All of the above!
El Niño Conditions
More warm water in the Eastern Pacific causesA. Less upwellingB. Less fishingC. Changes in weather in the Eastern and
Western PacificD. All of the above!
Worldwide Effects of El Niño
Increased rainfall in South America (Eastern Pacific) FLOODS
Less rain in Australia & Indonesia (Western Pacific) DROUGHTS, FOREST FIRES
Effects of El Niño in North America
Warmer winters in Midwest, East Coast
Wetter, cooler weather in CA, Southwest
Drier weather in Washington & Oregon
Increased erosion on Pacific Coast
Fewer hurricanes in Atlantic Ocean
Worldwide Effects of El Niño
More rain
Less Rain
WarmerWet, cool
Dry
El Niño & Global Warming
A natural phenomenon
Could be intensified because of global warming
Video Clips:
https://www.youtube.com/watch?v=7FVZrw7bk1w
https://www.youtube.com/watch?v=MzcKBeW44ao
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p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 52. Propose a way to determine whether a salt water solution is unsaturated, saturated, or supersaturated.2. Your answer here! Sample: Add a gram of salt to the solution. If it dissolves, the solution was unsaturated. If it remains solid but no solid comes out of solution, the solution was saturated. If solid comes out of the solution, the solution was supersaturated.
p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 5p. 198 CYU 2, 3, 4, 53. Explain why chewable medication is usually faster-acting in your body than the same medication enclosed in a pill.3. Chewing the medication increases its surface area so that it can dissolve faster.
4. Describe the steps you would take to make hot chocolate as quickly as possible using cold milk and a chocolate bar.4. Your answer here! Sample: Warm the milk so it will melt the chocolate and stir the chocolate as it melts.
5. Determine whether your sweat would evaporate more quickly if there were 92% humidity or 37% humidity. 5. Sweat would evaporate more quickly when there is 37% humidity.