What is the name of the movement of wind and water to the right or left caused by Earth's rotation?

• A. Coriolis effect
• B. Tidal range
• C. Gyre
• D. Current

Answer: (A)

The movement of wind and water to the right or left caused by Earth's rotation is the Coriolis effect. This apparent deflection happens because the planet is spinning beneath moving air and water, so in the Northern Hemisphere they veer to the right of their path and in the Southern Hemisphere they veer to the left. This deflection helps shape large-scale wind patterns and ocean circulation, contributing to features like trade winds and gyres. Tidal range is simply the vertical height difference between high and low tides, unrelated to rotational deflection. A gyre is a large circular current system that results from winds and the Coriolis effect, not the deflection itself. A current is any flow of water, not specifically tied to Earth’s rotation.