2. Things we already know Wind is what state of matter? Convection currents occur in __________ or ____________

3. Other things we know -Cold air is more dense than warm air -As air is warmed it rises

4. Things are heated at different rates by the sun!

5. The basics of wind View the website http://www.windpower.org/en/kids/choose/ wind/index.htm http://www.windpower.org/en/kids/choose/ wind/index.htm Read for information : Pages 536-540 in your textbook and fill in your notes sheet with your elbow buddy

7. Winds are caused by differences in air pressure Differences in air pressure are caused by unequal heating of the atmosphere Air over a heated surface becomes less dense and rises, cool dense air falls and causes wind

8. Wind directions is measured using a wind vane Wind speed is measured using an anemometer Wind-chill factor is caused because wind removes heat as it blows over your body

11. Local winds blow over short distances Caused by unequal heating within small areas, near mountains or water

12. Sea breeze- when the wind blows from an ocean or lake towards the land; happens in the day when the land warms faster than the water

13. Land breeze- happens at night when the land cools more quickly than the water; wind blows from the land to the water