Select True or False for the following statements.
1) Radio waves have higher frequencies than gamma rays.
2) The sun's radiation is most intense in the infrared region.
3) Radio waves have wavelengths longer than 1 m.
4) The Earth's atmosphere is quite transparent to infrared radiation.
5) A vertical automobile antenna is sensitive to electric fields polarized vertically.
6) Gamma rays can be produced through electrons oscillating in wires of electric circuits.
7) X-rays can be produced in transitions involving inner electrons in an atom.