In the process of nuclear fusion - two or more nuclei fuse or stick together to form a heavier
nucleus whose combined mass is slightly less than the original nucleus
Beneath the surface of which moon of Saturn is there evidence for the existence of a subsurface ocean
of liquid water? - Enceladus...
ASTRONOMY CSCC - EXAM 1
In the process of nuclear fusion - two or more nuclei fuse or stick together to form a heavier
nucleus whose combined mass is slightly less than the original nucleus
Beneath the surface of which moon of Saturn is there evidence for the existence of a subsurface ocean
of liquid water? - Enceladus
Apparent retrograde motion occurs when a planet appears to - move westward with respect to
background stars
A chemoautotroph gets its energy from - chemical reactions and its carbon from its environment
Abnormal forms of protein molecules called prions have one of the characteristics of living things in that
they - actively respond to external changes
According to Kepler's Second Law of planetary motion, a planet moves fastest in its orbit when it is -
at perihelion
According to the nebular theory for the formation of the solar system - planets should be rotating
in the same direction as they orbit the Sun
All organisms have finite lifetimes and eventually die. Which of the basic characteristics of life corrects
for this? - reproduction
Amino acids found in protein in life on Earth are - all left-handed molecules
Among the other planets, probably the most likely place to find evidence for life either now or in the
past is on - Mars
, Astrobiology as a field of scientific research, includes contributions from - many different scientific
disciplines
Astronomy has shown us that the fundamental laws of physics are - the same everywhere in the
universe
Compared to the Sun, older stars contain what proportion of elements heavier than hydrogen and
helium? - a lower proportion
Extraterrestrial life is defined to be - any kind of life found beyond the Earth
For most of human history it was believed that the Earth was at the center of the universe. This idea is
referred to as - geocentric
How are the "geological record" and the "fossil record" related? - the fossil record is part of the
geological record
Humanity has been thinking about the possibility of extraterrestrial life - throughout human
history since the time of the ancient Greeks
If the temperature of the Earth warms up how does the carbon dioxide cycle respond? - it speeds
up the formation of carbonate minerals in the oceans, thus pulling more carbon dioxide out of the
atmosphere
If we compress the entire history of the into one year, each day represents - a few tens of millions
of years
In order to have a global magnetic field, a planet must have - an electrically conducting fluid in its
interior which is undergoing convection and a
reasonably rapid rotation
In radioactive decay, the original nucleus before decay is referred to as the - parent isotope
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