El Nino: Understanding the Phenomenon

El Nino is a significant weather phenomenon in the Pacific Ocean, causing climate changes and natural disasters from Alaska to South America. It occurs when sea surface temperatures rise, affecting trade winds and weather patterns. El Nino impacts marine life by disrupting nutrient-rich waters and causes severe weather on land, such as storms and droughts. The 1997-98 El Nino was notably destructive, causing deaths and economic losses. Advances in prediction help communities prepare for its effects.

What is El Nino primarily known for?

• Being a type of storm

• Causing climate changes and natural disasters

• Increasing ocean salinity

• Decreasing global temperatures

How did El Nino get its name?

• From a Spanish explorer

• Because of its impact on the equator

• Due to its occurrence during Easter

• From South American fishermen noticing warmer waters during Christmas

What happens to the trade winds during an El Nino event?

• They reverse direction completely

• They strengthen and move westward

• They weaken and move eastward

• They remain unchanged

What is one major effect of El Nino on marine life?

• Increase in fish population

• Migration of marine life to warmer waters

• Blocking of nutrient-rich upwelling

• Decrease in ocean salinity

Which regions experience increased storms and rainfall due to El Nino?

• Southeast Asia and Australia

• Western United States and Central and South America

• Europe and Africa

• The Arctic and Antarctic

What are some consequences of El Nino in Southeast Asia and Australia?

• Droughts and wildfires

• Snowstorms and blizzards

• Increased rainfall and flooding

• Tornadoes and hurricanes

What was significant about the 1997-98 El Nino event?

• It was the largest El Nino in recorded history

• It only affected the Southern Hemisphere

• It was the smallest El Nino on record

• It caused no significant damage

How many deaths and damages were attributed to the 1997-98 El Nino?

• 1000 deaths and 20 billion dollars

• 2100 deaths and 33 billion dollars

• 3000 deaths and 50 billion dollars

• 500 deaths and 10 billion dollars

What advancements have scientists made regarding El Nino?

• They can predict El Nino events more accurately

• They have eliminated its effects

• They have increased its frequency

• They can now prevent El Nino events

How does better prediction of El Nino events help communities?

• By helping them prepare and adapt to weather changes

• By reducing the frequency of El Nino

• By increasing agricultural output

• By allowing them to ignore weather changes