I learned about radios. Radios can control electrons. With a two way radio you can send and receive radio waves. Different radio waves have different frequencies, energy levels, and different wave lengths. Electromagnetic radiation can travel through space. Electromagnetic radiation is energy. The magnetosphere helps life on earth live. The magnetosphere is a force field made by electric currents in earth’s core. Hertz is the measurement for frequency. Ultraviolet radiation can ruin DNA. Ultraviolet radiation are harmful rays. That is why you get sunburn when you stay outside too much.
There are three different ways radio waves can travel. Line of sight, ground wave and sky wave. There are four different types of radio propagation. Pulsating, direct, variable, and alternating. Alternating would be what would power your house. Direct would come from a battery. Line of sight is a direct radio wave transmission between a transmitter and a receiver. Ground wave is a wave that travels over ground. The radio wave bends as it travels. The propagation increases if the wave goes over water. Sky waves are radio waves bouncing around earth by waves reflecting on the ionosphere and earth. The ionosphere is the lower layer of the magnetosphere and the upper layer of the atmosphere. The ionosphere has lots of ions being made in it by, photons and cosmic rays ramming into the magnetosphere which makes atoms and molecules lose electrons which makes ions. This is information that I have learned in this first week of science.