Vocabulary
electromagnetic waves with the longest wavelength and the lowest frequencies.
What are Radio Waves
What are Sound Waves
This job is the study of earthquakes and seismic waves that move through around the Earth
What is Seismology
This guy found that when he ran electricity through a wire, the needle of a compass held nearby would deflect from its normal alignment with magnetic north until it lay perpendicular to the current
Who is Han Christan Orsted
Shortest wavelength and highest frequency on the electromagnetic spectrum
What are Gamma Rays?
electromagnetic waves with wavelengths shorter than visible light but longer than x-rays.
What are UltraVoilet Waves
These waves are caused by the sudden movement of materials within the Earth, such as slip along a fault during an earthquake
What are Seismic waves
This Job is the sending and receiving of signals especially using electrical or electroacoustic devices and electromagnetic waves
What is Communication engineering
This guy in August 1831, wound 2 coils of insulated wire around opposite sides of an iron ring.
Who is Michael Faraday
True or False, X-Rays can penetrate lead.
False, Gamma rays carry the most energy and can penetrate lead.
a wave made up of a combination of a changing electric field and a changing magnetic field.
What are electromagnetic waves
a wave that require a medium to propagate
What are Mechanical waves
this job is the study of the physical, chemical, and biological features of the ocean. It also measures the frequency, wavelength, and amplitude of waves
What is Oceanography
This man made his greatest discovery, the man who would give it a rigorous theoretical framework was born
Who is James Clerk Maxwell
The ___________ part of an x-ray image indicates a place where the x-ray was absorbed.
Darker
The bending or spreading of waves as they move around a barrier or pass through an opening.
What are Diffraction
motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance
What are Transverse Waves
design and develop electronic equipment, including broadcast and communications systems, such as portable music players and global positioning systems (GPS) devices
What are electronics engineers
This guy gave the world theoretical reason to believe in electromagnetic waves who confirmed their existence experimentally
Who is Heinrich Hertz
Both x-rays and gamma rays are used in the field of medicine. How are they each used?
X-Rays determine fractures and breaks in bones and teeth. Gamma Rays used in radiation treatment to kill cancer cells
the change in frequency of a wave as its source moves about an observer.
What are Doppler effect
is a wave that oscillates in time but whose peak amplitude profile does not move in space
What are Standing Wave
implement policy and guidance for the effective and efficient use of the electromagnetic spectrum
What are Electromagnetic Spectrum Management Chiefs
This man in 1905, the same year the guy published his special theory of relativity, he showed in a separate paper that electromagnetism must also be considered as bunch of discrete
Who is Albert Einstein
Why do x-ray techs protect themselves from exposure to x-rays but we don't protect ourselves from radio waves we are exposed to constantly?
X-rays are high frequency, high energy waves that can damage cells and tissues. Radio waves are low frequency waves that are thought to be harmless.