Unit #3- Light and Atoms Flashcards
Radiant energy
Energy that can travel through space from one point to another without the need of a direct physical link
Conduction
Solid
convenction
fluid
radiation
space
True or false: Blue light travels more quickly than red light
True
Electromagnetic wave/electromagnetic radiation
Mix of electric and magnetic energy
Photons
A particle or visible light or other electromagnetic radiation
Wave-particle duality
Light and sub-atomic particles
Visible spectrum
Color ranging that humans can see
Nanometer
Measured in billionths
Frequency
Measured in hertz
White light
A mixture of all colors
Frequency
Wavelength
True or false: FM radio waves can pass through solid objects while AM radio waves cannot
True
Visible light
One small part of the electromagnetic spectrum
Gamma, x-rays, microwaves
Wavelengths
Difference between one kind of electromagnetic energy and another is the length of their waves
Infrared
Heat radiation related to visible light
Blueshift
Light that appears bluer as it moves toward us
Redshift
Star moving away from us, appearing more red
Protons
Positive
Neutrons
Neutral
Number of protons
The element’s atomic number
Atomic mass
Protons + neutrons
Absorption
Lower to higher
Emission
Higher to lower
Spectroscopy
Study of light from an object