NAS CHAPTER 3 Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
The frequency of an electromagnetic wave is ______ proportional to its wavelength - CORRECT
ANSWER - inversely
______ is the distance between successive troughs and crests. - CORRECT ANSWER -
Wavelength
All of the following types of electromagnetic radiation have wavelengths longer than that of
visible light with the exception of - CORRECT ANSWER - ultraviolet radiation.
All of the following types of electromagnetic radiation have wavelengths shorter than that of
visible light with the exception of - CORRECT ANSWER - radio waves.
Violet has the ______ wavelength in the visible electromagnetic spectrum. - CORRECT
ANSWER - shortest
Ultraviolet radiation, gamma rays, and X-rays have frequencies ______that of visible light and
infrared radiation. - CORRECT ANSWER - higher than
Solar radiation that reaches Earth's surface consists of - CORRECT ANSWER - infrared
radiation.
visible radiation.
ultraviolet radiation.
All of the above.
, ______ is (are) partially blocked by ozone in the stratosphere. - CORRECT ANSWER -
Ultraviolet radiation
According to Wien's displacement law, which one of the following objects emits its most intense
electromagnetic energy at the shortest wavelength? - CORRECT ANSWER - the Sun
Generally, as the temperature of a radiating surface decreases, - CORRECT ANSWER -
the wavelength at which radiation from the surface is most intense will lengthen.
If the temperature of the Sun were to ______, the wavelength at which solar radiation is most
intense would decrease. - CORRECT ANSWER - increase.
is most intense at a shorter wavelength than terrestrial infrared radiation. - CORRECT
ANSWER - Solar radiation
The ultimate source of solar radiation is - CORRECT ANSWER - nuclear fusion in the
Sun.
Today, the solar altitude is at a maximum around - CORRECT ANSWER - noon
Earth is closest to the Sun during the - CORRECT ANSWER - Northern Hemisphere
winter.
Earth is closest to the Sun in - CORRECT ANSWER - January
During summer in the Northern Hemisphere, the number of hours of daylight is ______ the
number of hours of darkness. - CORRECT ANSWER - greater than
ACTUAL Exam Questions and CORRECT
Answers
The frequency of an electromagnetic wave is ______ proportional to its wavelength - CORRECT
ANSWER - inversely
______ is the distance between successive troughs and crests. - CORRECT ANSWER -
Wavelength
All of the following types of electromagnetic radiation have wavelengths longer than that of
visible light with the exception of - CORRECT ANSWER - ultraviolet radiation.
All of the following types of electromagnetic radiation have wavelengths shorter than that of
visible light with the exception of - CORRECT ANSWER - radio waves.
Violet has the ______ wavelength in the visible electromagnetic spectrum. - CORRECT
ANSWER - shortest
Ultraviolet radiation, gamma rays, and X-rays have frequencies ______that of visible light and
infrared radiation. - CORRECT ANSWER - higher than
Solar radiation that reaches Earth's surface consists of - CORRECT ANSWER - infrared
radiation.
visible radiation.
ultraviolet radiation.
All of the above.
, ______ is (are) partially blocked by ozone in the stratosphere. - CORRECT ANSWER -
Ultraviolet radiation
According to Wien's displacement law, which one of the following objects emits its most intense
electromagnetic energy at the shortest wavelength? - CORRECT ANSWER - the Sun
Generally, as the temperature of a radiating surface decreases, - CORRECT ANSWER -
the wavelength at which radiation from the surface is most intense will lengthen.
If the temperature of the Sun were to ______, the wavelength at which solar radiation is most
intense would decrease. - CORRECT ANSWER - increase.
is most intense at a shorter wavelength than terrestrial infrared radiation. - CORRECT
ANSWER - Solar radiation
The ultimate source of solar radiation is - CORRECT ANSWER - nuclear fusion in the
Sun.
Today, the solar altitude is at a maximum around - CORRECT ANSWER - noon
Earth is closest to the Sun during the - CORRECT ANSWER - Northern Hemisphere
winter.
Earth is closest to the Sun in - CORRECT ANSWER - January
During summer in the Northern Hemisphere, the number of hours of daylight is ______ the
number of hours of darkness. - CORRECT ANSWER - greater than
