15 Questions
What is the main topic of the lesson?
Climate change and its causes
How is climate change defined in the lesson?
Statistically significant changes over a continuous period of time
What are the factors that contribute to climate change?
A combination of natural internal processes, external forces, and persistent anthropogenic changes
What do natural causes of climate change include according to the lesson?
Volcanic eruptions
What does the lesson compare climate change to?
Pandemic experiences in different countries
What are some of the natural aerosols emitted during a volcanic eruption?
Sulfur dioxides
According to the Milankovitch theory, what combines to produce variations in the amount of solar energy that reaches the earth?
Eccentricity, obliquity, and precession
How are anthropogenic changes related to climate change?
They contribute to persistent changes in the atmosphere and land use
How does carbon dioxide contribute to warming the air near the surface?
Absorbing part of the infrared radiation in the air and returning it to the ground
What is the largest known contribution to climate change caused by human activities?
Burning of fossil fuels releasing carbon dioxide gas
How do greenhouse gases and aerosols affect climate change?
By altering incoming solar radiation and outgoing infrared radiation
What was proposed by Milankovitch theory as a factor influencing variations in the amount of solar energy that reaches the earth?
Cyclical variations in earth-sun geometry
What happens when power and heat are produced by burning coal, oil, and other fossil fuels?
Production of greenhouse gases and aerosols
What do volcanic eruptions emit that has an impact on climate change?
Carbon dioxide only
What leads to variations in the amount of solar energy that reaches earth according to Milankovitch theory?
Cyclical variations in earth-sun geometry
Study Notes
Climate Change Overview
- Climate change is a long-term warming of the planet, which is primarily caused by the increasing levels of greenhouse gases in the Earth's atmosphere.
Factors Contributing to Climate Change
- Natural causes: include volcanic eruptions, changes in Earth's orbit, and variations in the Sun's energy output
- Anthropogenic causes: include human activities such as burning fossil fuels, deforestation, and land-use changes
Natural Causes of Climate Change
- Volcanic eruptions emit natural aerosols, such as sulfur dioxide and ash, into the atmosphere
- Milankovitch theory proposes that variations in Earth's orbit, axial tilt, and precession combine to produce changes in the amount of solar energy that reaches the Earth
Anthropogenic Changes and Climate Change
- Burning fossil fuels, such as coal and oil, releases carbon dioxide and other greenhouse gases into the atmosphere
- Carbon dioxide traps heat and contributes to warming the air near the surface
- Deforestation and land-use changes lead to the release of stored carbon into the atmosphere
Greenhouse Gases and Aerosols
- Greenhouse gases, such as carbon dioxide and methane, trap heat and warm the planet
- Aerosols, such as sulfur dioxide and ash, can reflect sunlight back into space and cool the planet
Volcanic Eruptions and Climate Change
- Volcanic eruptions emit sulfur dioxide and ash, which can reflect sunlight and cool the planet
- Large-scale volcanic eruptions can lead to significant cooling of the planet for several years
Test your knowledge about the causes and effects of climate change on people’s health, biodiversity, and society. This quiz is based on the lesson 'Science, Technology and Climate Change' from the book 'Science, Technology and Society' by Serafica, Janice Patria J. et al.
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