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[solution]: Project Stage 3 (due at the end of week 7) (8% of course


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Project Stage 3 (due at the end of week 7) (8% of course grade)

 


 

The remaining 90 points are available for the components described below.

 


 

1. Due to friction with Earth's atmosphere, a large static electric charge could build up on our

 

plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field? Explain

 

why or why not. (15 points)

 


 

2. Upon entering Earth's atmosphere, a fragment is heated to high temperature by frictional forces.

 

What would happen to any ice contained within a fragment? What type of phase change would this be?

 

Is this type of change considered a chemical change or a physical change? Explain. (10 points)

 


 

3. As the fragment falls through the atmosphere, it is heated and some of the material is vaporized.

 

Explain how you could determine the composition of this hot vaporized material from the light it emits.

 

(15 points)

 


 

4. If the asteroid fragment contains carbon, it may burn when entering Earth's atmosphere. What is the

 

most likely compound to result from this process? Which type of chemical bond would result from this

 

process? Of the types chemical reactions studied in this course, which type would this be? Be sure to

 

fully explain all of your answers. (20 points)

 


 

5. Asteroids can be classified into two broad groups based on their composition and location: carbonrich asteroids dominate the outer part of the asteroid belt, whereas metal-rich asteroids dominate the

 

inner part of the belt. Analysis of the fragment we have discussed in this project reveals that it contains

 

nearly equal amounts of metals and carbon. Can you conclude that the original whole asteroid had a

 

similar composition? Can you conclude with a high degree of confidence that the asteroid originated in

 

the middle regions of the asteroid belt? Explain your reasoning. If you would need more data from the

 

asteroid analysis, what would you like to see? (20 points)

 


 

6. The Law of Conservation of Energy tells us that ?energy cannot be created nor destroyed.? At the

 

center of our Solar System is the Sun, and the Sun is constantly generating energy allowing our Earth to

 

have habitable conditions for life to exist. What is the source of the Sun?s energy? Does the Law of

 

Conservation of Energy apply here? Explain your answer. (10 points)

 


 

 


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