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Influences on Weather.

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Presentation on theme: "Influences on Weather."— Presentation transcript:

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


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