Chapters 11,12,13

Mass-less energy particle that make up light

Created by vibrating electric charges- moves through a vacuum

Emitted from a decaying atomic nucleus 100 trillionths of a meter

Waves that change to heat when absorbed 1mm to 700 billionths of a meter

Wavelengths range from .1mm to 30 cm

Used for communication. Wavelengths are longer than 10 cm

EM wave with wavelength between 400 billionths and 10 billionths of a meter

Can be detected by the human eye 700 to 400 billionths of a meter

Used for medical imaging 10 billionth of a meter to 10 trillionths of a meter

An electric signal whose values change over time

Specific frequency that a radio station is assigned and uses to broadcasts signals

An electric signal with only two possible values

Process of adding a signal to a carrier wave by altering the carrier waves amplitude

Device that transmits radio signals at one frequency and receives radio signals at a different frequency

A system of satellites and ground monitoring stations that enable a receiver to determine its location at or above the earths surface

Sound waves require and medium, and are compressional Electromagnetic waves are produced by vibration

They both have surrounding electric and magnetic fields. They exert a force even when the on ejecting in contact

Energy carried by an electromagnetic wave, it helps by heating the earth

Vacuum- 300,000 km/s Air-299,000 km/s Water- 226,000 km/s

All waves have wavelengths, frequencies, and intensities. As the frequency increases wavelengths become smaller

Electromagnetic spectrum

Electrons

X-rays

Ultraviolet waves