Infrared Radiation

Infrared Radiation

1. infrared radiation is energy transfer by electromagnetic waves.

2. all object emit infrared radiation.

3. the hotter an object is the more infrared radiation it emits in a given time.

4. infrared waves are part of the electromagnetic spectrum. they are the part of the spectrum just beyond visible light. we can detect infrared radiation with our skin- it makes us feel warm.

5. infrared radiation can travel through a vacuum, as in travelling through space. this is how we get energy from the sun.

6. the green house effect

   • the earths atmosphere acts like a greenhouse made of glass.
     • short wavelength infrared radiation (and light) from the sun can pass through the glass to warm the object inside the greenhouse.
     • infrared radiation from these warm object is trapped inside by the glass because the object emit infrared radiation of longer wavelengths that cant pass through the glass.