ASTR 95294

subject Type Homework Help
subject Pages 6
subject Words 714
subject Authors Eric Chaisson, Steve McMillan

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page-pf1
A featureless spectrum, such as a rainbow, is said to be ________.
The terrestrial planets have mantles of ________ materials and iron rich cores.
Contrast the observed visible mass of the Galaxy with its suspected total. Explain the
difference.
In Newton's first law, the ________ of a body causes it to resist changes in its motion
page-pf2
Our seasons are a consequence of the Earth's 23.5 degree ________.
Why were elements heavier than helium not produced during the Big Bang?
When a low-mass star runs out of hydrogen in its core, it gets brighter. Why?
page-pf3
________ radiation is trapped close to our surface by the greenhouse effect.
How long does the synodic month take, and how it this observed?
The cantaloupe skin terrain of Triton is thought to be due to ________.
In what two ways is the orbit of Triton unusual?
page-pf4
A star system where we observe the magnitude to increase and decrease is an
________.
Explain three advantages the Hubble Space Telescope has over all ground-based
telescopes.
________ objects are found at opposite ends of the bi-polar jets expelled in the
protostar's T-Tauri phase.
page-pf5
What are two advantages of CCDs over photographic films for astronomy?
A photosphere appears on a protostar near the end of stage ________.
Rigel, a blue supergiant, is 17 times more massive than the Sun and, therefore, is likely
________ in age.
page-pf6
Why is our Sun not forming carbon and heavier elements yet?
Because it has a higher percentage of ________, Neptune appears even bluer than
Uranus.
Contrast the orbits of comets and asteroids.

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