____ 31. Gamma rays travel through space at what speed?A) much faster than the speed of lightB) slower than the speed of light because their wavelength is shorterC) faster than other wavelengths of light because they have the highest energyD) at the speed of light
____ 32. Xrays occupy which position in the electromagnetic spectrum?
____ 33. What is the only difference between visible light and radio waves?
____ 34. Earth's atmosphere is transparent and allows radiation to pass through
____ 35. On the absolute scale of temperature (in degrees kelvin), the zero of the scale corresponds to theA) fusion point of hydrogen.B) melting point of ice.C) mean temperature of space.D) temperature at which all motion ceases.