History, Terms, and Characteristics pt 2 Flashcards
What is Radiation (X-rays)?
A form of electromagnetic energy (photon)
What are the seven different forms of electromagnetic energy (photons) from highest to lowest?
- Gamma Rays
- X-rays
- Ultraviolet
- Visible Light (white light)
- Infra-red
- Microwave
- Radio
What is Electromagnetic energy (photons)?
having electrical, wave-like properties and magnetic fields set up in space by vibrating electrons
How do you best describe a photon?
a bundle of energy
What are the three characteristics we use to distinguish one photon from another?
- Wavelength
- Frequency
- Velocity
What is a wavelength?
distance from one crest to another, one valley to another, or from one point on the sine wave to the next corresponding point
The shorter the wavelength, the __________ the energy level.
greater/higher
How is wavelength measured?
In meters or angstroms
X-ray= __ angstrom
-1 angstrom = (1 x 10^-10 m)
- 10 to .1 angstrom
What is Frequency? and How is it measured?
-The number of cycles per second. A cycle is one positive and one negative alternation.
- Measured in Hertz
As wavelength increases the frequency_______?
Decreases
As wavelength decreases the frequency_______?
Increases
The relationship of wavelength and frequency are__________?
Inversely proportional (oppositely related)
Energy level is directly related to _______?
Frequency
As frequency decreases energy levels _________?
Decrease
As frequency increases energy levels________?
Increase
What is Velocity?
All forms of the electromagnetic spectrum have different wavelengths and frequencies. However, the Velocity or Speed is the same
What is the speed of light in miles/sec?
186,000 miles/sec
What is the speed of light in m/sec?
3 x 10 ^8 m/sec
What is the speed of light in cm/sec?
3 x 10^10 cm/sec
