1. Weather and Weather Factors

2. Weather Factors
Weather is the state of atmosphere at a specific time and place.
The Earths temperature has increased by 1 degree over the past century.

3. Mr. Fetch's Earth Science Class
What causes weather?
The transfer of energy between: - The sun - Earth’s surface - The Atmosphere.
Air rises and cools to form clouds
Water vapor condenses to from precipitation and releases energy into the atmosphere
The sun warms earth’s surface increasing its temperature.
Air
Air
The sun’s energy is used to evaporate water and put moisture into the air.
Air
Air L H
Mr. Fetch's Earth Science Class
Unequal heating and differences in air pressure cause wind. m

4. Mr. Fetch's Earth Science Class
Temperature A B
Temperature and particle motion are related.
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom

5. Mr. Fetch's Earth Science Class
Factors that affect temperature
Cities are Warmer
Mountains are Colder
Cloudy days are Cooler
Cloudy nights
are Warmer
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom

6. Mr. Fetch's Earth Science Class
Wind
Wind is moving air and is caused by differences in air pressure within our atmosphere. Air under high pressure moves toward areas of low pressure
H L
We can measure winds with a windsock, weather vain, anemometer and beaufort scale
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom

7. Mr. Fetch's Earth Science Class
Barometric Pressure
atmospheric pressure as indicated by a barometer
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom

8. Mr. Fetch's Earth Science Class
Moisture: Change of State
MELTING
Uses Heat
FREEZING
Gives off Heat
Sublimation
Deposition
EVAPORATION
Uses Heat
CONDENSATION
Gives off Heat
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom

9. Mr. Fetch's Earth Science Class
Warm air holds more moisture than cold air.
Mr. Fetch's Earth Science Class
Mr. Fetch’s Earth Science Classroom