2. Formation of Local Winds Convection in Motion

3. Uneven Heating What heated up faster, the sand or water? –The sand What would heat up faster, the ocean or the beaches? Why? –The beaches. –Because sand heats up faster than water.

4. Uneven Heating How would the air above the beach be different than the air above the water? –The air above the beach would be warmer than the air above the water Is warm air more dense or less dense? –Less dense, because warm air spreads apart.

5. Uneven Heating Do objects that are less dense float or sink? –They float What will happen to the warm air that is above the sand on a warm day? –It will float up

6. Uneven Heating If the warm air is rising, is it possible to run out of air above the sand? Why? –No –Air from over the ocean will come in and replace it. Warm air over the sand is less dense and rises Cooler air rushes in from the ocean to replace the air that has risen over the land Sandy beachOcean

7. Uneven Heating How will this change at night??? –The exact opposite will occur. The air above the water will be warmer and rise, while cooler air will rush off the land to replace it. Click here to see how localized winds work

8. Sea and Land Breezes Always name a wind from where it is coming from. ex. Land Breeze comes from the land. Sandy beachOcean Because of Specific Heat, water and sand do not heat up and cool down at the same rate of speed Fast Slow Cooler air rushes off the ocean to replace the air that has risen over the land Warm air over the sand is less dense and rises Day Time

9. Sea and Land Breezes Always name a wind from where it is coming from. ex. Land Breeze comes from the land. Sandy beachOcean Fast Slow This difference in Specific Heat creates winds. Cooler air rushes off the ocean to replace the air that has risen over the land Warm air over the sand is less dense and rises Day Time

10. Sea and Land Breezes Always name a wind from where it is coming from. ex. Land Breeze comes from the land. Sandy beachOcean Fast Slow Cooler air rushes off the ocean to replace the air that has risen over the land Warm air over the sand is less dense and rises Day Time This wind is a sea breeze because the air is coming off the sea.

11. Sea and Land Breezes At night the ocean is warmer, so the air will come off the land, resulting in a land breeze. Sandy beachOcean Cooler air rushes off the land to replace the air that has risen over the ocean Warm air over the ocean is less dense and rises Night Time