🔍 Key Concepts

• Tropical waves in the Northern Hemisphere and which way they normally move across the Atlantic • The general trade wind direction between the equator and about 30°N • The difference between ‘nearby’, ‘farther away’, and ‘same position’ over a 12‑hour period at typical wave speeds

💭 Think About

• If a tropical wave is east of you, and the trades are blowing from east to west, how will its position relative to you change over time? • In 12 hours, would you expect a slow‑moving tropical feature to cover a noticeable distance, or stay almost fixed? • Think about whether the wave will move closer to your longitude, farther away, or pass to the other side of you.

✅ Before You Answer

• Confirm the typical direction of movement of tropical waves in the Northern Hemisphere Atlantic (with the trades). • Estimate a reasonable travel distance in 12 hours if the wave moves at, say, 10–20 knots. • Decide whether, after moving, the wave would be still east of you, directly over you, or to your west.