Thermal Energy Transfer: Radiation

Radiation

·        Radiant energy is the transfer of energy by invisible waves given off by the energy source

·        These invisible waves are called infrared waves (a type of electromagnetic wave from the sun)

·        Infrared waves are given off by all heat sources, including you

·        Heat is radiant energy from the sun that reaches your skin

·        Radiant energy warms up objects when the waves of radiant energy come into contact with matter making the particles vibrate faster

Answers to Radiation Worksheet

1) Radiation waves are absorbed by the person in front of you so you do not feel the heat.

2) White clothing reflects infrared radiation and black clothing will absorb this radiation.

3) The shiny suits will reflect the strong heat radiation from the sun so the astronauts do not overheat.

4) Insulation is a poor heat conductor and it contains glass pieces to reflect heat back into your home.

5) In summer, heat is reflected out into the environment and in winter, heat is reflected back into your home.