How radiation affects temperature

• What does every object do with electromagnetic radiation?

  Absorbs and emits electromagnetic radiation
• What happens to an object when it absorbs radiation?

  It gets warmer due to energy increase
• What occurs when an object emits radiation?

  It cools down due to energy loss
• How does the balance of radiation affect an object's temperature?

  It determines if the object warms or cools
• What happens to a hotter object like a cup of tea in terms of radiation?

  It emits more radiation than it absorbs
• What happens to a cooler object like an ice cube regarding radiation?

  It absorbs more radiation than it emits
• What occurs when an object absorbs and emits equal energy?

  It stays at the same temperature
• What is the term used to describe the power of radiation per unit area?

  Intensity
• What does intensity measure in terms of radiation?

  Energy transferred to a given area over time
• What types of electromagnetic radiation should we focus on?

  • Ultraviolet radiation
  • Visible light
  • Infrared radiation
• How does the emitted radiation graph represent wavelengths?

  Higher intensity means more wavelength emitted
• What would the emission curve of a room temperature object look like?

  It would mostly emit infrared radiation
• How does the emission curve change for a hotter object like burning coal?

  It shifts up and to the left
• What happens to the intensity of emitted wavelengths as temperature increases?

  Intensity of all wavelengths increases
• Why do Bunsen burner flames change color as they heat up?

  Shorter wavelengths are emitted at higher temperatures
• What type of radiation do room temperature objects primarily emit?

  Infrared radiation
• How does the Earth interact with electromagnetic radiation from the sun?

  It absorbs and emits infrared radiation
• What happens to the Earth's temperature during the day?

  More energy is absorbed than emitted
• What occurs to the Earth's temperature at night?

  Less energy is absorbed than emitted
• Why does the overall temperature of the Earth remain constant?

  Some parts are always in sunlight
• What are the key points about the balance of radiation on Earth?

  • Earth absorbs radiation from the sun
  • Earth emits its own infrared radiation
  • Daytime: more energy absorbed than emitted
  • Nighttime: less energy absorbed than emitted
  • Overall temperature remains relatively constant