Light
Electromagnetic Waves.
or EM Waves
When electrically charged particles vibrate, they disturb the electric and magnetic fields around them. These disturbances are called ________ __________.
Electromagnetic Waves
or
EM Waves
What makes some EM waves safe and some dangerous?
They have different frequencies that carry different amounts of energy.
What are the 3 colors of light our eyes only register?
red, green, blue
The longest wavelenghts are seen as which color on the visible light spectrum?
Red
All electromagnetic waves are ________ in that the direction of their disturbances are perpendicular to each other.
transverse
High energy means more ______.
Energy
What are we perceiving when we see white light?
All wavelengths of light at once.
The shortest wavelengths are seen as which color on the visible spectrum?
Violet
Which EM waves has the highest frequency and energy?
Gamma Rays
EM waves with similar frequencies are _________ and _________.
X-Rays, Gamma
The transfer of energy as electromagnetic waves is called ___________.
Radiation
What is the order of the visible light spectrum?
ROY G BIV
Red, orange, yellow, green, blue, indigo, violet.
Light waves are disturbances in _________ and _________ fields.
electric, magnetic
or
magnetic, electric
Which two parts of the electromagnetic spectrum are close to visible light?
Infrared Light and Ultraviolet Light
A _________ can split white light into its component colors, separating the colors by wavelength.
Prism
Recite the colors of the visible light spectrum in order of increasing wavelength.
Violet, Indigo, Blue, Green, Yellow, Orange, Red
Not all wavelengths of light penetrate the atmosphere equally, but visible light can. Why is this so?
The atmosphere blocks most of the higher-frequency radiation such as x-rays and gamma rays.
The full range of wavelengths of EM waves is called the __________ __________.
Electromagnetic Spectrum
Why do we see a red apple as red?
Red is not in the apple. The apple reflects the red wavelength and absorbs all other wavelengths.