Select True or False for the following statements about electromagnetic waves. Radio waves travel in vacuum at a lower speed than the visible light.

X-rays travel in vacuum at a higher speed than the visible light.

The Earth's atmosphere is quite transparent to infrared radiation.

Visible light is often emitted when valence electrons change their state.

Gamma rays can be produced through electrons oscillating in wires of electric circuits.

A vertical automobile antenna is sensitive to electric fields polarized vertically.

The sun's radiation is most intense in the infrared region.