Question

how is the suns radiation travelling after striking the earth? unable to figure this one out slower with a longer wavelength same speed as when it entered faster with short wavelengths

Explanation:

The sun's radiation (solar radiation, mainly short - wave) when it strikes the Earth, the re - emitted radiation (terrestrial radiation) is long - wave radiation. The speed of electromagnetic radiation in a medium (here, the Earth's atmosphere and surface environment) for long - wave radiation (compared to the short - wave solar radiation in space) has a longer wavelength and the speed of electromagnetic waves in a medium is slower than in a vacuum (where solar radiation travels before hitting Earth). The option "same speed as when it entered" is wrong because the medium changes. The option "faster with short wavelengths" is wrong as re - emitted is long - wave and speed doesn't increase. The option "unable to figure this one out" is not a scientific answer. So the correct option is the one stating "slower with a longer wavelength".

Answer:

slower with a longer wavelength