Slide 1Chapter 20 Climate Change and Ozone Depletion Slide 2 Chapter Overview Questions  How have the earth’s temperature and climate changed in the past?  How might…

Slide 1Chapter 20 Climate Change and Ozone Depletion Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Time to fight back against global warming! Slide 7 Core Case Study: Studying…

Slide 1 Climate Control and Ozone Depletion Chapter 19 Slide 2 An Enormous Cloud of Air Pollutants and Ash from Iceland volcano (April 2010) This dust cloud closed Airports…

Chapter 20 Climate Change and Ozone Depletion Scientists know with virtual certainty that: Human activities are changing the composition of Earth's atmosphere. Increasing…

How do volcanoes affect overall climate? How have they helped us learn about climate change? Figure 20-2 Fig. 20-2a, p. 465 Thousands of years ago Average temperature over…

Climate Change and Ozone Depletion PAST CLIMATE AND THE GREENHOUSE EFFECT Over the past 900,000 years, the troposphere has experienced prolonged periods of global cooling…

The Atmosphere What is weather? state of the atmosphere at a given time and place Who studies the weather? Meteorologists – scientists Meteorology – study of the atmosphere…

Climate Change and Ozone Depletion Chapter 20 Scientists know with virtual certainty that: Human activities are changing the composition of Earth's atmosphere. Increasing…

Chapter 20 Climate Change and Ozone Depletion PAST CLIMATE Over the past 900,000 years, the troposphere has experienced prolonged periods of global cooling and global warming.…

PAST CLIMATE AND THE GREENHOUSE EFFECT Figure 20-2 How Do We Know What Temperatures Were in the Past? Scientists analyze tiny air bubbles trapped in ice cores learn about…