TON O + Smoke rises steadily from a chimney one morning from 6am to 12 noon. The wind blows from the West at 6am (a Westerly ) and backs steadily round to blow from the South by 12 noon (a Southerly). (The terms veering and backing are used in their original sense of the shift of surface wind direction with time although meteorologists now also use the term when referring to the shift in wind direction with height. Winds shifting anti-clockwise around the compass are "backing", those shifting clockwise "veering". ) 5-minute presentation questions: (A) What shape does the smoke trail make at 7am? Sketch the paths taken by the smoke particles to form this pattern. (B): What shape does the smoke trail make at 9am? Sketch the paths taken by the smoke particles to form this pattern. (C): What shape does the smoke trail make at noon? Sketch the paths taken by the smoke particles to form this pattern