Estimate how often galaxies collide in a galaxy cluster, i.e.,
the stellar component of one galaxy...
Estimate how often galaxies collide in a galaxy cluster, i.e.,
the stellar component of one galaxy passing through another.(Model
the average galaxy as a sphere with a radius of 10 kpc).
Draw the rotation curve of two spiral galaxies in one figure.
Each galaxy has a stellar disk that extends out to 20 kpc. Galaxy A
has twice as much mass within a radius of 20 kpc. Galaxy B shows
evidence for the presence of dark matter. Explain and be
quantitative?
10. The Hubble Age. Let's estimate the age of the
universe. Pick two galaxies, one 10 Mpc away, and one 100 Mpc away.
Calculate how fast each one is moving away from us, assuming a
Hubble constant of 70 km/sec/Mpc. Assume they have always been
moving at that speed and calculate how long (in years) it has taken
them to reach their present distance. Because the expansion is
uniform, it shouldn’t matter which galaxies you use. What is your
estimate...
describe the function of ONE component if a cell
membrane, how its shape is important for this role, how the
functional groups and intermolecular forces of attraction
contribute to its shape. 6 marks
2.How is it
possible for a trait to “skip generations” (i.e., one of your
traits was also in one of your grandparents, but not in either of
your parents) when every piece of DNA in you was also in one of
your parents? How do meiosis and fertilization play a role in this
phenomenon?
7. Why do Punnett squares not work for genes
located on mitochondrial or chloroplast DNA?
Explain (giving at least one example) how stable isotopes of
oxygen (i.e. 16O and 18O) can be used to measure the
paleotemperature of the ocean, specifically based on calcium
carbonate in “shells?”
how does serpentinite form? I.e. what type of
metamorphism?
What is one MAIN way to distinguish quartzite from marble since
they often look similar? Think about the physical properties you
used to test minerals.
Recall that children often overgeneralize grammatical rules at
one language milestone. Describe how the behaviorist, nativist, and
interactionist views would discuss this occurrence.