radiation

Question 1

what is radiation

Answer 1

its is the transfer of heat through rays, waves or particles without the need of medium

Question 2

factors affecting the rate of radiation

Answer 2

1. darker, rougher and dull surfaces (increases)
2. larger surface (increases)
3. temperature of surface ( increases emitted)

Question 3

heat gain can be…

Answer 3

heat gain by radiation can only be reduced not stopped

Question 4

how does radiation and green house effect work

Answer 4

The heat energy from the sun is radiated to the earth The heat energy transferred by radiation is reflected by the earth’s atmostphere into the earths surface. green house effect is the warming of the earth’s surface.THis happens when the heat is prevented from leaving the earth’s surface due to greenhouse gases instead of being reflected back into space