# Howes Unit 1 Webquest.docx - Maggie Howes 1 What is...

• No School
• AA 1
• 7

This preview shows page 1 - 3 out of 7 pages.

Maggie Howes 1. What is totality and how large is it? Totality is when the moon entirely covers the sun from our point of view. A total solar eclipse only covers a small path as it moves across Earth. However the moon is far enough away in that path to totally block out the sun, even though its diame - ter is 400 times smaller than that of the sun. 2. Explain the relative sizes and distances from earth of the sun and moon as described in the movie. The Moon is relatively 400 times smaller than the sun. But it is also about 400 times closer making it appear about the same size in our sky as the sun. 3. How often on average do we have total solar eclipses? Explain the details of why this is the case. On average total solar eclipses occur every 18 months. Even though the moon passes between the sun and Earth every month its shadow does not always cross the Earth. This is because the moon’s orbit is slanted, meaning for the most part its shadow is above or below the Earth. 4. How long will we continue to see total solar eclipses? Why is that the case? We will continue to see total solar eclipses until the sun becomes a red giant. This will happen in a few billion years. We stop see -

Subscribe to view the full document.

Maggie Howes ing eclipses because the moon is also moving away from us this will occur in about a billion years. 5. Describe the terms umbra and penumbra including relative size and dark - ness. The umbra during an eclipse is the darker shadow where totality can be observed. The umbra creates a path of totality across Earth about 70 miles across. The closer to the middle the longer you can observe totality. The penumbra is
• Fall '19
• Ecliptic

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes