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.
5 Things that Influence Weather 1. Humidity 2. Temperature 3. Clouds 4. Air Pressure 5. Wind
Humidity is the amount of water in the air. Summer Days Hygrometer So how does water in the air affect the weather? Clouds Precipitation Water in the Air
So how does temperature affect the weather? Warmer air = more water vapor Precipitation Temperature is how hot or cold the air is. Thermometer – measures temperature Temperature
Clouds Cloud formation is affected by temperature and humidity. Types Weather predictors
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
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.
An anemometer measures wind speed. A weather vane or wind vane tells the direction wind is blowing. Wind Continued