1. Mr. Fetch’s Earth Science Classroom Wind The horizontal movement of air. Warm air rises and cold air sinks. Temperature Differences High and Low pressure like to balance out. Pressure Difference

2. Mr. Fetch’s Earth Science Classroom Temperature: WARM AIR Molecules move faster. Air becomes less dense. Less dense air rises. Slow moving Very Dense Warming up Moving faster Very Warm air Moving really fast Spreading out Becoming less Dense 50° 70° 90°

3. Mr. Fetch’s Earth Science Classroom Temperature: COLD AIR Molecules move slower. Air becomes more dense. More dense air sinks. Cooler air Slow moving Closer together Becoming more dense Cooling down Moving slower Very Warm air Moving really fast Spread out Less Dense 50° 70° 90°

4. Mr. Fetch’s Earth Science Classroom Temperature Differences: Rising & Sinking Air

5. Mr. Fetch’s Earth Science Classroom Pressure Differences Air Rises Low Pressure Air Sinks High Pressure

6. Mr. Fetch’s Earth Science Classroom The Creation of Wind 1.Temperature difference = rising/sinking air. 2.Rising/sinking air = pressure difference. 3.Pressure likes to balance out = WIND !!!

7. Mr. Fetch’s Earth Science Classroom Sea Breeze Wind blows from Sea to Land.

8. Mr. Fetch’s Earth Science Classroom Sea Breeze Wind blows from Land to Sea.