Description

ES 110 – Earth & Astronomical Science

Homework #7

Part one

Chapter 23 – Light, Astronomical Observations and The Sun

1)         Review Question (2 pt.)

What is the electromagnetic spectrum?  What wavelength has the highest energy?

2)         Review Question (2 pt.)

What can be learned about a star (or other celestial objects) from a dark-line/absorption spectrum?

3)         Review Question (2 pt.)

Describe how astronomers determine whether a star is moving toward or away from Earth.

4)         Review Question (2 pt.)

Why do astronomers seek to design telescopes with larger and larger mirrors?  Why does the size of the mirror matter?

5)         Website Learning (2 pts)

Check out the following website: http://www.explainthatstuff.com/electromagnetic-spectrum.html

Read through the information on the various wavelengths of the EM spectrum.  Pick the ones that interest you the most!  In 3-4 sentences describe two of the wavelengths and tell me what you learned, in your OWN words

 6)         Review Question (5 pt.)

Describe the Sun in as much detail as you can…what does it look like, what features does it have, etc.  Your description should be about 1-2 paragraphs and don’t use sources other than your textbook and lecture notes, summarizing what you have learned (in other words don’t got do an internet search, just show me what you have learned!).

7)         Review Question (2 pt.)

Explain how a sunspot can be very hot and yet appear dark.  Use your thinking caps!

8)         Review Question (1 pt.)

What “fuel” does the Sun consume?

9)         Lecture Review Question (1 pt)

What is the most inefficient method of heat transfer within the interior of the sun?  Hint:  Think about what the sun is made of….GAS!  So what method of heat transfer is least efficient in a gas?

10)   Astronomy & Earth Science: Bringing it together (6 pts, 2pts each)

Time to brainstorm a bit here, and bring in what you have learned so far in this class.  Explain in detail (use your thinking caps!) a few ways that the sun is an important aspect of the following:

1. The Geosphere
2. The formation of the Solar System
3. The Biosphere