AST TEST PAPER 2026 STUDY GUIDE
REVIEW
◉ An astronomer observes two ordinary stars. The first one turns
out to be twice as hot as the second. This means that the first one
radiates:
A
twice as much energy as the second
B
roughly the same amount of energy as the second
C
half as much energy as the second
D
about 16 times the energy of the second
E
this problem cannot be solved with just the information we were
given Answer: D
◉ When white light passes from the air into a different medium such
as glass, it:
A
is dispersed into different colors
, B
is reflected backwards
C
is refracted (bent)
D
is Doppler shifted
E
more than one of the above Answer: E
◉ An artist who likes working with sources of light decides to make
a modern sculpture out of electrified glass tubes that contain very
thin (rarified) neon gas. When the sculpture is finished, and the
electricity is turned on, the tubes glow with a rich red color. What we
are seeing is:
A
a continuous spectrum
B
an absorption spectrum
C
an emission spectrum
D
a Doppler shift
E
REVIEW
◉ An astronomer observes two ordinary stars. The first one turns
out to be twice as hot as the second. This means that the first one
radiates:
A
twice as much energy as the second
B
roughly the same amount of energy as the second
C
half as much energy as the second
D
about 16 times the energy of the second
E
this problem cannot be solved with just the information we were
given Answer: D
◉ When white light passes from the air into a different medium such
as glass, it:
A
is dispersed into different colors
, B
is reflected backwards
C
is refracted (bent)
D
is Doppler shifted
E
more than one of the above Answer: E
◉ An artist who likes working with sources of light decides to make
a modern sculpture out of electrified glass tubes that contain very
thin (rarified) neon gas. When the sculpture is finished, and the
electricity is turned on, the tubes glow with a rich red color. What we
are seeing is:
A
a continuous spectrum
B
an absorption spectrum
C
an emission spectrum
D
a Doppler shift
E
