🔍 Key Concepts

• Seiche: a standing wave oscillation in an enclosed or partially enclosed body of water (like a Great Lake) • Effect of strong, sustained winds and sudden changes in wind on water level setup at one end of a lake • Difference between tidal effects and meteorological (weather/wind) effects on Lake Erie

💭 Think About

• Think about what physical mechanism can quickly pile water up on one end of Lake Erie, then let it slosh back and forth like water in a bathtub. • Ask yourself which answer choices involve regular, predictable astronomical cycles versus sudden, short-term weather or wind events. • Consider how the shape and orientation of Lake Erie (long, shallow, oriented SW–NE) would respond to strong winds blowing along its length and then suddenly easing.

✅ Before You Answer

• Verify whether tidal forces (Moon/Sun alignment) or wind/pressure changes are the main driver of seiches on the Great Lakes. • Check which option involves a sudden change after strong winds in a direction that can push water toward one end of Lake Erie. • Eliminate any choice that limits seiches to a particular season or to a specific type of front without a strong physical reason tied to water level oscillations.