AOS 100 Exam 2
Radiant energy - Answer-the energy transferred from the sun to your face
radiant energy travels in the form of - Answer-waves
electromagnetic waves travel at a speed of - Answer-3 x 10^8 m/s (300,000 km/s)
3 x 10^8 m/s (300,000 km/s) is the speed of - Answer-light
Wavelength (λ) is measured in? - Answer-Micrometers (10-6 meters)
What is speed in terms of wavelengths? - Answer-The measure of how far a wave crest moves in 1
second
Do all electromagnetic waves have the same speed? - Answer-yes
what is frequency? - Answer-A measure of how many wave crests pass a point in 1 second
Equation for speed - Answer-Speed = wavelength x frequency
Energy of long wavelengths? - Answer-low
, Energy of short wavelengths? - Answer-high
Energy of high frequency waves? - Answer-high
Energy of low frequency waves? - Answer-low
All objects whose temperature is above _____ emit radiation - Answer-Absolute 0 (0 °K)
Where does energy originate from? - Answer-Vibrating electrons
The particular amount of E-M radiation emitted by an object depends primarily on _____ - Answer-the
temperature of the object
stefan-Boltzmann Law - Answer-E=T^4 The total energy radiated per unit surface area of a black body is
directly proportional to the black body's temperature to the 4th power
Can we determine the wavelength at which an object at a certain temperature emits maximally? -
Answer-yes
According to Wein's displacement law, the wavelength of maximum emission depends on? - Answer-
temperature
Sun's radiation is known as _____ - Answer-shortwave
Earth's radiation is known as _____ - Answer-longwave
Radiant energy - Answer-the energy transferred from the sun to your face
radiant energy travels in the form of - Answer-waves
electromagnetic waves travel at a speed of - Answer-3 x 10^8 m/s (300,000 km/s)
3 x 10^8 m/s (300,000 km/s) is the speed of - Answer-light
Wavelength (λ) is measured in? - Answer-Micrometers (10-6 meters)
What is speed in terms of wavelengths? - Answer-The measure of how far a wave crest moves in 1
second
Do all electromagnetic waves have the same speed? - Answer-yes
what is frequency? - Answer-A measure of how many wave crests pass a point in 1 second
Equation for speed - Answer-Speed = wavelength x frequency
Energy of long wavelengths? - Answer-low
, Energy of short wavelengths? - Answer-high
Energy of high frequency waves? - Answer-high
Energy of low frequency waves? - Answer-low
All objects whose temperature is above _____ emit radiation - Answer-Absolute 0 (0 °K)
Where does energy originate from? - Answer-Vibrating electrons
The particular amount of E-M radiation emitted by an object depends primarily on _____ - Answer-the
temperature of the object
stefan-Boltzmann Law - Answer-E=T^4 The total energy radiated per unit surface area of a black body is
directly proportional to the black body's temperature to the 4th power
Can we determine the wavelength at which an object at a certain temperature emits maximally? -
Answer-yes
According to Wein's displacement law, the wavelength of maximum emission depends on? - Answer-
temperature
Sun's radiation is known as _____ - Answer-shortwave
Earth's radiation is known as _____ - Answer-longwave
