AST1002 EXAM 2 QUESTIONS AND ANSWERS
2026 FULL PRACTICE TEST WITH VERIFIED
SOLUTIONS
◉ For lecture on "Waves", a sound wave can travel through ________..
Answer: molten rock, solid rocks
◉ How many times lower would the intensity of light from a given
star become if the star is 2 times farther away. Answer: 4 times
◉ visible wavelengths of electromagnetic radiation have a range of
wavelengths of. Answer: 400 nm to 700 nm.
◉ forms of light have what property in common? (Light in this case
refers to the whole spectrum, not just the visible range.. Answer: All
forms of light are electromagnetic radiation.
◉ What is the one fundamental difference between X rays and radio
waves?. Answer: the wavelengths of X rays and radio waves are very
different.
, ◉ ieces of metal are heated by varying amounts in a flame. The
hottest of the pieces will be the one that shows most prominently
which color?. Answer: blue
◉ What changes would you expect to see in the resulting spectrum
of emitted light from a piece of metal when it is heated slowly in an
intense flame from 500 K to 1500 K?. Answer: he intensity of
radiation would increase greatly, and the color would change from
red through white to blue.
◉ An ideal blackbody in physics and astronomy is an object that.
Answer: absorbs and emits electromagnetic radiation at all
wavelengths.
◉ According to the Doppler effect. Answer: the wavelength of light is
shifted to a shorter wavelength if the source of light is moving
nearer to the observer.
◉ The Doppler effect is the change in the wavelength of light caused
by the source. Answer: moving with respect to the observer.
◉ he dark absorption lines in the solar spectrum are caused by.
Answer: a cooler layer of gas overlying the hot solar surface, which
contains many elements, including hydrogen, helium, magnesium,
calcium, and iron.
2026 FULL PRACTICE TEST WITH VERIFIED
SOLUTIONS
◉ For lecture on "Waves", a sound wave can travel through ________..
Answer: molten rock, solid rocks
◉ How many times lower would the intensity of light from a given
star become if the star is 2 times farther away. Answer: 4 times
◉ visible wavelengths of electromagnetic radiation have a range of
wavelengths of. Answer: 400 nm to 700 nm.
◉ forms of light have what property in common? (Light in this case
refers to the whole spectrum, not just the visible range.. Answer: All
forms of light are electromagnetic radiation.
◉ What is the one fundamental difference between X rays and radio
waves?. Answer: the wavelengths of X rays and radio waves are very
different.
, ◉ ieces of metal are heated by varying amounts in a flame. The
hottest of the pieces will be the one that shows most prominently
which color?. Answer: blue
◉ What changes would you expect to see in the resulting spectrum
of emitted light from a piece of metal when it is heated slowly in an
intense flame from 500 K to 1500 K?. Answer: he intensity of
radiation would increase greatly, and the color would change from
red through white to blue.
◉ An ideal blackbody in physics and astronomy is an object that.
Answer: absorbs and emits electromagnetic radiation at all
wavelengths.
◉ According to the Doppler effect. Answer: the wavelength of light is
shifted to a shorter wavelength if the source of light is moving
nearer to the observer.
◉ The Doppler effect is the change in the wavelength of light caused
by the source. Answer: moving with respect to the observer.
◉ he dark absorption lines in the solar spectrum are caused by.
Answer: a cooler layer of gas overlying the hot solar surface, which
contains many elements, including hydrogen, helium, magnesium,
calcium, and iron.
