Complete Real Exam Questions With Correct Answers
( Verified Answers) Already Graded A+ | Guaranteed
Success!! | Newest Exam | Just Released!!
If the freezing point of ices of all types was at a much lower
temperature, what change would that imply for the formation of
our solar system? - ANSWER-The gas giants would have to
form at a larger distance.
Which of the following observations of an extrasolar planet
system would be inconsistent with our theory of planet
formation? - ANSWER-About half of the planets around a star
orbit in one direction, and half in the other direction.
The habitable zone is defined as a region around a star where
... - ANSWER-
planets could have liquid water on
their surface.
Which of these observations would suggest the presence of a
planet orbiting a
star? - ANSWER-A slight decrease in the brightness of a
star that repeats
,multiple times with regular
periods.
A "hot jupiter" is a gas giant with similar mass to jupiter, but ...
- ANSWER-it is
much closer to its star making its atmosphere
much hotter.
You are looking for extrasolar planets using the Doppler
technique. What features are most important for you to
measure? - ANSWER-The wavelengths of lines in the spectrum.
What type of extrasolar planet is most easily detected
by the Doppler
technique? - ANSWER-Jupiter-mass planets close
to their sun.
Why is Venus so much hotter than Earth? - ANSWER-Venus
has significant
amounts of carbon dioxide in its
atmosphere.
Which of the following shows evidence for ancient river beds? -
ANSWER-Mars.
What is the fundamental reason that Mars has become virtually
geologically dead (unlike the Earth which is geologically
active)? - ANSWER-Its relatively small mass.
, If the polar ice decreases, what would happen, and why? -
ANSWER-Warming,
because more sunlight is
absorbed.
What kind of thermal radiation does the Earth emit? - ANSWER-
infrared light
Why does increasing the amount a greenhouse gas increase the
temperature of
a planet? - ANSWER-Greenhouse gases absorb
infrared light.
What is the scientific evidence for human contributions to
global climate change? - ANSWER-Climate models show that
extra carbon dioxide contributed by humans is enough to
match the data.
Why is Mars so much colder than the Earth? - ANSWER-
Because Mars has a
very thin, diffuse
atmosphere.
Why didn't a planet form where the asteroid belt is now
located? - ANSWER
Gravitational tugs from Jupiter prevented material from
collecting together to
form a
planet.