1. Influences on Weather

2. EQ: What has an effect on the weather?

3. Weather: The state of the atmosphere at a particular place and time.
The amount of water in the air, the temperature of the air and the precipitation are all used to describe the atmosphere.
Climate: The average weather conditions of a particular area.

4. 5 Things that Influence Weather
Humidity
Temperature
Clouds
Air Pressure
Wind

5. Water in the Air Humidity is the amount of water in the air.
Summer Days
Hygrometer
So how does water in the air affect the weather?
Clouds
Precipitation

6. Temperature So how does temperature affect the weather?
Temperature is how hot or cold the air is.
Thermometer – measures temperature
So how does temperature affect the weather?
Warmer air = more water vapor
Precipitation

7. Clouds Cloud formation is affected by temperature and humidity. Types
Weather predictors

8. Air Pressure Air Pressure is the weight of the air.
The sun plays a role
Warmer, lighter, less dense air rises = lower air pressure
Barometer measure air pressure
Low pressure = warm temps, rain and storms
High pressure = cooler temps & clear skies

9. Wind Wind is the natural movement of air. What causes it?
Air moves from high pressure to low pressure areas.
High pressure area close to a low pressure area = fast wind.
Big temp differences in the areas will make wind blow fast.
High to low

10. Wind Continued An anemometer measures wind speed.
A weather vane or wind vane tells the direction wind is blowing.

11. Air Pressure, Moisture and Weather.asf
Review
Air Pressure, Moisture and Weather.asf

12. Read About it
Read with a partner about the influences on weather on pages in the EOG Science Book
On your own, answer questions 1-4 on pages