EIS Reading Guide for Pages 113-117

Name______Date______pd.______

EIS Reading Guide for pages 113-117

Galileo’s Discoveries 1. What did people mean when they used the expression “A clockwork universe?”

2. What two things did Galileo notice about the moons he saw using the telescope?

3. According to Galileo’s Discoveries what two things did he conclude about the sun after tracking its sunspots?

4. List three pieces of evidence Galileo used to support his ideas about the sun and sunspots.

5. Why were Galileo’s discoveries so controversial and why might other scientists of his time be hesitant to come forward with new information?

Who Saw Them First 1. What ancient civilization recorded the first sunspots?

2. What astronomers are credited with discovering sunspots? (Last names only)

What are Sunspots 1. What is a sunspot? 2. Can sunspots be bigger than the earth’s diameter and what evidence can you provide to support your answer/

3. What significant finding did studying sunspots provide scientists?

4. Scientists found that at the equator the rotational period of the sun is about 25 days while at different latitudes it can be up to 35 days. What did scientists conclude from this information?

5. Why do sunspots form?

In your lab journal describe or diagram the “sun” as seen on page 117. Label each term below.

Core Radiation zone Convection zone Photosphere Chromosphere Sunspot Corona