Podcast
Questions and Answers
What is a key characteristic of greenhouse gases?
What is a key characteristic of greenhouse gases?
- They are transparent to infrared irradiation
- They are monoatomic gases
- They are able to absorb infrared light (correct)
- They are unable to absorb molecular vibrations
What type of molecules are more likely to take on energy from radiation?
What type of molecules are more likely to take on energy from radiation?
- Nitrogen and oxygen molecules
- H2O and CO2 molecules (correct)
- Monoatomic gases
- Methane and nitrous oxide molecules
What distinguishes a gas as a greenhouse gas?
What distinguishes a gas as a greenhouse gas?
- Being transparent to infrared irradiation
- Being a monoatomic gas
- Inability to absorb molecular vibrations
- Ability to absorb infrared light and have molecular vibrations (correct)
Why is argon not considered a greenhouse gas?
Why is argon not considered a greenhouse gas?
What type of radiation gives energy to H2O and CO2 molecules which they re-radiate in random directions?
What type of radiation gives energy to H2O and CO2 molecules which they re-radiate in random directions?
What is a key characteristic of a gas to be considered a greenhouse gas?
What is a key characteristic of a gas to be considered a greenhouse gas?
Why is argon not considered a greenhouse gas?
Why is argon not considered a greenhouse gas?
What type of radiation gives energy to H2O and CO2 molecules which they re-radiate in random directions?
What type of radiation gives energy to H2O and CO2 molecules which they re-radiate in random directions?
What makes H2O and CO2 molecules more likely to take on energy from radiation?
What makes H2O and CO2 molecules more likely to take on energy from radiation?
What is the main process by which greenhouse gases keep the Earth warmer?
What is the main process by which greenhouse gases keep the Earth warmer?
Flashcards
Greenhouse Gases
Greenhouse Gases
Gases that absorb infrared light.
Energy Absorption
Energy Absorption
H2O and CO2 readily absorb energy from radiation.
Greenhouse Gas Criteria
Greenhouse Gas Criteria
Ability to absorb infrared light and have molecular vibrations.
Why Argon Isn't a Greenhouse Gas
Why Argon Isn't a Greenhouse Gas
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Infrared Radiation
Infrared Radiation
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Greenhouse Gases Warm Earth
Greenhouse Gases Warm Earth
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Argon's Structure
Argon's Structure
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H2O, CO2, and Infrared
H2O, CO2, and Infrared
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Energy Affinity
Energy Affinity
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Study Notes
Greenhouse Gases Characteristics
- A key characteristic of greenhouse gases is their ability to absorb and re-emit infrared radiation, trapping heat in the atmosphere.
- Polarity is essential for a molecule to be a greenhouse gas, as it allows them to take on energy from radiation.
- Molecules with a dipole moment, such as H2O and CO2, are more likely to take on energy from radiation due to their polar nature.
- Argon is not considered a greenhouse gas because it is a non-polar molecule, meaning it lacks a dipole moment and cannot absorb and re-emit infrared radiation.
- Infrared radiation gives energy to H2O and CO2 molecules, which they re-radiate in random directions, trapping heat in the atmosphere.
- A key characteristic of a gas to be considered a greenhouse gas is its ability to absorb and re-emit infrared radiation, which is dependent on the molecule's polarity.
Greenhouse Effect Process
- The main process by which greenhouse gases keep the Earth warmer is the trapping of heat in the atmosphere through the absorption and re-emission of infrared radiation.
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