1. humidity – the level of moisture in the air

2. relative humidity – is when you compare how much water vapor is in the air to how much it COULD hold

3. transpiration –watery vapor passed through a membrane or pores in a plant

4. transpiration –watery vapor passed through a membrane or pores in a plant

5. cloud formation – the way clouds form

6. cloud formation – the way clouds form

7. cloud formation – the way clouds form

8. cloud formation – the way clouds form

9. thermal – a rising air current caused by heating the Earth’s surface (radiation)

10. thermal – heated air that rises thermals help these birds to soar, they help gliders soar, too. They push air into the atmosphere, that cools and forms clouds

11. convection – when relatively warm air is raised into the atmosphere, often cooling and forming clouds

12. meteorologist – a scientist who deals with the atmosphere, including weather and climate