1. Weather and Climate

2. Getting Ready for this Unit
Many human activities have an effect on the climate in a region. List as many climate-changing human activities as you can.
Once you have your list, categorize each human activity as either negative (for example, raises global temperature or increases pollution) or positive (lowers global temperature or decreases pollution)

3. Weather vs. Climate
Imagine your friend in Australia asks you what it’s like outside where you live. What would you say?
The details you are talking about are conditions of the atmosphere at a certain time and certain place
Put simply, you’re talking about the weather

4. Climate vs. Weather What aspects of weather can we describe?
Temperature
Wind speed
Humidity
Cloud cover
Precipitation

5. Climate vs. Weather
Weather conditions can change hourly, which is one reason people watch, read or listen to weather forecasts

6. Climate vs. Weather How is climate different from weather?
Weather describes current conditions of the atmosphere in a specific place at a specific time
Weather changes are discussed in terms of short periods of time, such as hourly and daily
Climate describes patterns of weather conditions within a large region over a long period of time
Climate describes the typical weather you can expect in a region based on data collected over many years
‘CLIMATE IS WHAT YOU EXPECT, BUT WEATHER IS WHAT YOU GET’

7. Factors That Affect the Climate
Latitude (distance from the equator)
Air circulation
Ocean currents – water holds heat, coastal areas are warmer
Local geography – mountains, lakes, etc.

8. Factors That Affect Temperature
Earth rotation – 24 hour day
Earth revolution and axis tilt – days
Air circulation

9. Pg. 321 #1-3,5,6