vocabulary
This gas is the main greenhouse gas produced by burning fossil fuels
This gas is the main greenhouse gas produced by burning fossil fuels
The greenhouse effect helps keep Earth warm enough for life.
Answer: What is true?
Driving gasoline cars releases this greenhouse gas.
Answer: What is carbon dioxide?
CO₂ levels rose from about 280 ppm before the Industrial Revolution to over 420 ppm today. This shows what trend?
Answer: What is increasing greenhouse gas concentrations?
The process where gases trap heat in Earth's atmosphere.
What is the greenhouse effect?
This human activity greatly increases greenhouse gas emissions.
Answer: What is burning fossil fuels?
Large cattle farms increase emissions of this gas.
Answer: What is methane?
A city plants thousands of trees to reduce climate change. Trees help by doing this.
Answer: What is absorbing carbon dioxide?
A gas released from livestock digestion and landfills.
What is methane (CH₄)?
Cutting down forests increases greenhouse gases because trees normally do this.
Answer: What is absorb carbon dioxide through photosynthesis?
Burning coal in power plants releases large amounts of this greenhouse gas.
Answer: What is carbon dioxide?
A landfill releases large amounts of methane. This gas is about 25x stronger than CO₂ at trapping heat. This describes what concept?
Answer: What is global warming potential?
The ability of a gas to trap heat in the atmosphere.
What is global warming potential (GWP)?
This layer of Earth’s atmosphere contains most greenhouse gases.
Answer: What is the troposphere?
Air conditioners and refrigerators once commonly used these greenhouse gases.
Answer: What are CFCs?
Scientists measure rising global temperatures alongside rising CO₂ levels. This suggests what relationship?
Answer: What is a correlation between CO₂ and global warming?
These gases like CFCs damage ozone and also trap heat.
What are chlorofluorocarbons (CFCs)?
These surfaces reflect sunlight and help reduce warming.
Answer: What is high albedo (ice, snow, bright surfaces)?
Melting Arctic ice reduces albedo and causes this climate effect.
Answer: What is increased warming / positive feedback?
A country switches from coal power to solar energy. This would most likely cause what change?
Answer: What is reduced greenhouse gas emissions?