Question 1 Report
Which of the following colours of surfaces will radiate heat energy best?
Black surfaces will radiate heat energy best. All objects radiate heat energy in the form of infrared radiation. The rate of radiation depends on several factors, including the temperature and color of the object's surface. Darker surfaces, such as black, absorb more light and radiation compared to lighter surfaces, such as white. Because of this, they also emit more heat energy. When a surface absorbs light or heat, the energy is either reflected or absorbed by the surface. If the surface is a dark color, more of the energy will be absorbed, causing the surface to become hotter. As the temperature of the surface increases, the amount of heat energy that is radiated back into the environment also increases. Therefore, in the given options, black surfaces will radiate heat energy best because they absorb the most amount of heat energy and also emit the most amount of heat energy.