The Sun and the Earth both emit infrared radiation. How does the rate of infrared radiation emitted by the Sun compare with the rate of infrared radiation emitted by the Earth? Give a reason for your answer.

All objects emit thermal radiation (infrared). The rate at which an object emits radiation depends on its temperature and surface area. Hotter objects emit radiation at a much greater rate than cooler objects. Since the Sun is significantly hotter than the Earth, it emits infrared radiation at a much greater rate.