Astronomy – 5 Exam Questions Correctly Answered.
why is a sunflower yellow? - CORRECT ANSWER It reflects yellow light.
Blue light has higher frequency than red light. Thus, blue light has: - CORRECT ANSWER higher energy and shorter wavelength than red light.
radio waves are - CORRECT ANS...
Astronomy – 5 Exam Questions
Correctly Answered.
why is a sunflower yellow? - CORRECT ANSWER It reflects yellow light.
Blue light has higher frequency than red light. Thus, blue light has: - CORRECT ANSWER higher energy
and shorter wavelength than red light.
radio waves are - CORRECT ANSWER a form of light
compared to an atom as a whole an atomic nucleus - CORRECT ANSWER is very tiny but has most of the
mass
some nitrogen atoms have 7 neutrons and some have 8 neutrons which makes these two forms of
nitrogen - CORRECT ANSWER isotopes of each other
sublimination is the process by which - CORRECT ANSWER solid material enters the gas phase
if you heat a rock until it glows its spectrum will be - CORRECT ANSWER a thermal radiation spectrum.
the set of spectral lines that we see in a stars spectrum depends on the star's - CORRECT ANSWER
chemical composition
compared to the sun a star whose spectrum peaks in the infared is - CORRECT ANSWER cooler than our
Sun.
a spectral line that appears at a wavelength of 321nm in the laboratory appears at a wavelength of
328nm in the spectrum of a distant object we say that the objects spectrum is - CORRECT ANSWER Red
shifted
power - CORRECT ANSWER the rate of energy transfer measured in watts (1watt= 1joule/s)
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