Foundations of Astronomy 11th Edition solutions

Foundations of Astronomy 11
If all elliptical galaxies had three different diameters, you would never see an elliptical galaxy with a circular outline on a photograph. True or false? Explain your answer. (Hint: Can a football ever cast a circular shadow?)

Foundations of Astronomy 11
If you visited another planetary system, would you be surprised to fi nd planets older than Earth? Why or why not?

Foundations of Astronomy 11
What is the difference between the Milky Way and the Milky Way Galaxy?

Foundations of Astronomy 11
How Do We Know? The evidence is overwhelming in support of the idea that the Grand Canyon was dug over a span of millions of years by the erosive power of the Colorado River and its tributary streams. Is that a catastrophic theory or an evolutionary theory?

Foundations of Astronomy 11
How does astronomy help answer the question, What are we?

Foundations of Astronomy 11
Does Tychos model of the universe explain the phases of Venus that Galileo observed? Why or why not?

Foundations of Astronomy 11
What evidence can you cite that disks of gas and dust are common around young stars?

Foundations of Astronomy 11
How does a contracting protostar convert gravitational energy into thermal energy?

Foundations of Astronomy 11
If a civilization lived on a planet in an E0 galaxy, do you think they would have a Milky Way band of starlight in their sky? Why or why not?

Foundations of Astronomy 11
In Ptolemys model, how do the epicycles of Mercury and Venus differ from those of Mars, Jupiter, and Saturn?

Foundations of Astronomy 11
Explain the different ways a giant molecular cloud can be triggered to contract.

Foundations of Astronomy 11
How does energy get from the core of a star, where it is generated, to the surface, where it is radiated into space?

Foundations of Astronomy 11
Why did Copernicus have to keep small epicycles in his model?

Foundations of Astronomy 11
Why do astronomers think the solar system formed about 4.6 billion years ago?

Foundations of Astronomy 11
How can Titan keep an atmosphere when it is smaller than airless Ganymede?

Foundations of Astronomy 11
Why is Jupiter more oblate than Earth? Do you expect all Jovian planets to be oblate? Why or why not?

Foundations of Astronomy 11
What evidence can you give that the corona has a very high temperature?

Foundations of Astronomy 11
Why did Plato propose that all heavenly motion was uniform and circular?

Foundations of Astronomy 11
Small telescopes are often advertised as 200 power or magnifi es 200 times. As someone knowledgeable about astronomical telescopes, how would you improve such advertisements?

Foundations of Astronomy 11
Why was the Hipparcos satellite able to make more accurate parallax measurements than ground-based telescopes?