Studied by 2 peopleMagnetic Resonance
________ imaging technology uses radio waves as an alternative to X- ray imaging.
Microwave Ovens
________ use electromagnetic waves to heat food.
Energy
________ is transferred from one particle to the next as the wave travels through the matter.
Transceiver
________: transmits one radio signal and receives another radio signal from a base unit.
Visible Light
________: The electromagnetic waves that humans can detect with their eyes.
Magnetic Fields
Because the electric and ________ vibrate at right angles to the direction the wave travels, an electromagnetic wave is a transverse wave.
Radar
________ stands for RAdio Detecting And Ranging.
Photon
________: a particle whose energy depends on the frequency of the waves.
Satellite
The ________ relays the signal to a ground station, and the call is passed on to the telephone network.
Sound Waves
When you speak into a telephone, a microphone converts ________ into an electrical signal.
Carrier Wave
A(n) ________ broadcast by a radio station can be altered in one of two ways to transmit a signal: amplitude modulation (AM) or frequency modulation (FM)
Microwaves
________: Radio waves with wavelengths of less than 30 cm.
Ozone
________ is a molecule composed of three oxygen atoms.
Electromagnetic Waves
________: made by vibrating electric charges and can travel through space where matter is not present.
Global Positioning System
________ (GPS): a system of satellites, ground monitoring stations, and receivers that determine a persons or objects exact location at or above Earths surface.
Cathode-Ray Tubes
________ produce the images you see on television.
Enable Magnets
Fields ________ and charges to exert forces at a distance.
Shortest Wavelengths
The electromagnetic waves with the ________ and highest frequencies are X rays and gamma rays.
Communications Satellites
________ use solar panels to provide the electrical energy they need to communicate with receivers on Earth.
Radio Wave
A(n) ________ does not produce compressions and rarefactions as it travels through air.
Electrons
________ moving in a wire are surrounded by a magnetic field.
GPS Satellites
________ are owned and operated by the United States Department of Defense, but the microwave signals they send out can be used by anyone.
Net Flow of Electrons
An electric current, the ________ in one direction, is always surrounded by a magnetic field.
Television Satellites
________ use microwaves rather than the longer- wavelength radio waves used for normal television broadcasts.
Visible Light
________ is the range of electromagnetic waves that you can detect with your eyes.
Cathode - Ray Tube
________: a sealed vacuum tube in which one or more beams of electrons are produced.
Magnetic Field
A changing ________ creates a changing electric field.
Electromagnetic Waves
made by vibrating electric charges and can travel through space where matter is not present
Radiant Energy
The energy transferred by an electromagnetic wave
Radio Waves
low-frequency electromagnetic waves with wavelengths longer than about 1 mm
Microwaves
Radio waves with wavelengths of less than 30 cm
Infrared Waves
a type of electromagnetic wave with wavelengths between about one millimeter and 750 billionths of a meter
X Rays
have wavelengths between about 10 billionths of a meter and 10 trillionths of a meter
Gamma Rays
Electromagnetic waves with wavelengths shorter than about 10 trillionths of a meter
Carrier Wave
The specific frequency of the electromagnetic wave that a radio station is assigned
Transceiver
transmits one radio signal and receives another radio signal from a base unit
Global Positioning System (GPS)
a system of satellites, ground monitoring stations, and receivers that determine a persons or objects exact location at or above Earths surface
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Flashcard (64)