🔍 Key Concepts

• Pressure gradient force – how air moves between areas of different pressure • Coriolis effect – how Earth’s rotation changes the direction of moving air • Global vs. local wind patterns near the Earth’s surface

💭 Think About

• First, think about what actually causes air to start moving in the first place between two locations. • Next, consider what changes the direction of that moving air in each hemisphere. • Finally, ask yourself whether each statement (A, B, and C) can be true at the same time, or if any one of them must be false.

✅ Before You Answer

• Verify that air needs a pressure difference to move horizontally (wind). • Confirm that the Coriolis effect is directly related to the Earth’s rotation and affects moving air in both hemispheres. • Check if any option (A, B, or C) contradicts basic meteorology; if none do, think carefully about whether more than one correct process can be acting on air masses at the same time.