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Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

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Page 1: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 2: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years.

Page 3: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

An ice age, or more precisely, a glacial age, is a period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers.

Page 4: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 5: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Earth is around 4.54 billion years old. There have been at least five major ice ages in the Earth's past. Outside these ages, the Earth seems to have been ice-free.

Page 6: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 7: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Global warming is increasing an average temperature of the air and sea at Earth's surface.

Since the early 20th century, the global air and sea surface temperature has increased about 0.8 °C, with about two-thirds of the increase occurring since 1980. Each of the last three decades has been warmer at the Earth’s surface than any preceding decade since 1850.

Page 8: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Scientists are more than 90% certain that most of global warming is caused by increasing concentrations of greenhouse gases produced by human activities.

Page 9: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in a planet's atmosphere warm its lower atmosphere and surface.

Without the Earth's atmosphere, the temperature across almost the entire surface of the Earth would be below freezing.

Page 10: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 11: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Human activity since the Industrial Revolution has increased the amount of greenhouse gases in the atmosphere. These levels are much higher than at any time during the last 800,000 years, the period for which reliable data has been extracted from ice cores.

Page 12: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Fossil fuel burning has produced about three-quarters of the increase in CO2 from human activity over the past 20 years.

Page 13: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 14: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

Warming of the atmosphere and the ocean causes change in the global water cycle, reductions in snow and ice, global sea level rise and climate extremes. ????

Page 15: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 16: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 17: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 18: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 19: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years
Page 20: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

droughts

Page 21: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

storms

Page 22: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

floods

Page 23: Climate change is a significant and lasting change in the weather patterns over periods ranging from decades to millions of years

This presentation was made by 6th graders of This presentation was made by 6th graders of Primary School Gornji Mihaljevec using Primary School Gornji Mihaljevec using school litarature and Internet duringschool litarature and Internet during

Geography classes.Geography classes.