Educational worksheet for learning about El Niño and La Niña weather patterns.

To solve this mapping activity, we need to draw the correct weather patterns for La Niña and El Niño across the Pacific Ocean using the symbols provided in the legends.

Here is the step-by-step logic for drawing each diagram:

Part 1: La Niña Diagram (Left Side)

Goal: Show how weather works during a La Niña phase.
Key Feature: Strong trade winds push warm water toward Australia/Asia.

1. Trade Winds: Draw arrows pointing from right to left (from South America toward Australia). In La Niña, these winds are strong.
2. Water Circulation: Draw curved arrows showing surface water moving west (toward Australia) and deep cold water rising up on the east side (near South America). This is called "upwelling."
3. Warm Waters: Draw the "sun" symbol over the western Pacific (near Australia and Indonesia). The warm water piles up here.
4. Cool Waters: Draw the "snowflake/ice" symbol over the eastern Pacific (near South America). The upwelling brings cold water to the surface.
5. Cloud Build Up: Draw the "cloud/rain" symbol over the warm waters near Australia. Warm water causes evaporation and rain.

Summary for La Niña Drawing:
- West (Australia): Warm Water + Clouds/Rain
- East (South America): Cool Water
- Winds: Blowing strongly West

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Part 2: El Niño Diagram (Right Side)

Goal: Show how weather works during an El Niño phase.
Key Feature: Weak trade winds allow warm water to slosh back toward South America.

1. Trade Winds: Draw arrows pointing from right to left, but make them shorter or weaker than in La Niña. Sometimes they even reverse, but usually, they are just very weak.
2. Water Circulation: Draw the circulation arrow showing warm water staying in the central/eastern Pacific. The upwelling of cold water near South America stops or becomes very weak.
3. Warm Waters: Draw the "sun" symbol over the central and eastern Pacific (closer to South America). The warm water has moved east.
4. Cool Waters: The cool water symbol should be absent or much smaller in the east because the warm water has covered it.
5. Cloud Build Up: Draw the "cloud/rain" symbol over the central/eastern Pacific (near South America). Since the warm water is there, the rain moves there too. Australia often gets dry weather.

Summary for El Niño Drawing:
- West (Australia): No clouds (dry), cooler water than usual
- Central/East (South America): Warm Water + Clouds/Rain
- Winds: Weak or blowing East

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Final Answer:

For the La Niña Map (Left):
- Draw Trade Wind arrows pointing strongly West (towards Australia).
- Draw Warm Waters (sun symbol) near Australia.
- Draw Cloud Build Up (rain cloud symbol) near Australia.
- Draw Cool Waters (snowflake symbol) near South America.
- Draw Water Circulation arrows showing water moving West on top and rising up on the East side.

For the El Niño Map (Right):
- Draw Trade Wind arrows that are weak or pointing slightly East.
- Draw Warm Waters (sun symbol) in the Central/Eastern Pacific (near South America).
- Draw Cloud Build Up (rain cloud symbol) in the Central/Eastern Pacific (near South America).
- Do not draw Cool Waters near South America (or draw them far away).
- Draw Water Circulation arrows showing warm water spreading East.