Cuesta College, San Luis Obispo, CA
Students find their assigned groups of three to four students, and work cooperatively on an in-class activity worksheet to discuss the categories and causes of different types of eclipses.
Showing posts with label lunar eclipse. Show all posts
Showing posts with label lunar eclipse. Show all posts
20130609
Astronomy in-class activity: eclipses
Astronomy 210 In-class activity 5 v.13.06.09, fall semester 2013
Cuesta College, San Luis Obispo, CA
Students find their assigned groups of three to four students, and work cooperatively on an in-class activity worksheet to discuss the categories and causes of different types of eclipses.
Cuesta College, San Luis Obispo, CA
Students find their assigned groups of three to four students, and work cooperatively on an in-class activity worksheet to discuss the categories and causes of different types of eclipses.
20080918
Astronomy quiz question: in the penumbra of the Moon
Astronomy 210 Quiz 2, Fall Semester 2008
Cuesta College, San Luis Obispo, CA
[4.0 points.] An observer is located on the surface of the Earth, and this observer is also located in the penumbra of the Moon. What type of eclipse is seen by the observer?
(A) A total lunar eclipse.
(B) A partial lunar eclipse.
(C) An annular solar eclipse.
(D) A partial solar eclipse.
(E) A total solar eclipse.
Correct answer: (D)
Assuming that the umbra of the Moon never does pass over the observer (for which this would be response (E), a total solar eclipse), this will be only a partial solar eclipse. If the observer were in the "negative shadow" of the Moon (out past the umbra), then an annular solar eclipse would be observed (response (C)). Responses (A) and (B) correspond to the Moon itself being in the umbra or penumbra of the Earth, respectively.
Student responses
Section 70160
(A) : 5 students
(B) : 10 students
(C) : 0 students
(D) : 15 students
(E) : 3 students
"Difficulty level": 51%
Discrimination index (Aubrecht & Aubrecht, 1983): 0.78
Cuesta College, San Luis Obispo, CA
[4.0 points.] An observer is located on the surface of the Earth, and this observer is also located in the penumbra of the Moon. What type of eclipse is seen by the observer?
(A) A total lunar eclipse.
(B) A partial lunar eclipse.
(C) An annular solar eclipse.
(D) A partial solar eclipse.
(E) A total solar eclipse.
Correct answer: (D)
Assuming that the umbra of the Moon never does pass over the observer (for which this would be response (E), a total solar eclipse), this will be only a partial solar eclipse. If the observer were in the "negative shadow" of the Moon (out past the umbra), then an annular solar eclipse would be observed (response (C)). Responses (A) and (B) correspond to the Moon itself being in the umbra or penumbra of the Earth, respectively.
Student responses
Section 70160
(A) : 5 students
(B) : 10 students
(C) : 0 students
(D) : 15 students
(E) : 3 students
"Difficulty level": 51%
Discrimination index (Aubrecht & Aubrecht, 1983): 0.78
20080206
Astronomy quiz question: monthly solar and lunar eclipses
Astronomy 10 Quiz 2, Spring Semester 2008
Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q2.4
[3.0 points.] Which one of the following choices best describes what would happen if the orbit of the Moon around the Earth was not tilted with respect to the orbit of the Earth around the Sun?
(A) There would never be any solar or lunar eclipses of any type.
(B) There would only be annular solar eclipses, and partial lunar eclipses.
(C) There would be a solar eclipse and a lunar eclipse every month.
(D) The Moon would then always block the Sun, making a permanent solar eclipse.
(E) The Earth would then always be between the Sun and Moon, making a permanent lunar eclipse.
Correct answer: (C)
The reason why there is no solar eclipse and lunar eclipse every month is that the orbit of the Moon around the Earth is tilted, such that the new Moon does not usually pass directly between the Sun and the Earth, and the full Moon does not usually pass directly between the Earth and the Moon.
Student responses
Section 4160
(A) : 4 students
(B) : 6 students
(C) : 25 students
(D) : 1 student
(E) : 3 students
Student responses
Section 5166
(A) : 5 students
(B) : 6 students
(C) : 50 students
(D) : 3 students
(E) : 2 students
Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q2.4
[3.0 points.] Which one of the following choices best describes what would happen if the orbit of the Moon around the Earth was not tilted with respect to the orbit of the Earth around the Sun?
(A) There would never be any solar or lunar eclipses of any type.
(B) There would only be annular solar eclipses, and partial lunar eclipses.
(C) There would be a solar eclipse and a lunar eclipse every month.
(D) The Moon would then always block the Sun, making a permanent solar eclipse.
(E) The Earth would then always be between the Sun and Moon, making a permanent lunar eclipse.
Correct answer: (C)
The reason why there is no solar eclipse and lunar eclipse every month is that the orbit of the Moon around the Earth is tilted, such that the new Moon does not usually pass directly between the Sun and the Earth, and the full Moon does not usually pass directly between the Earth and the Moon.
Student responses
Section 4160
(A) : 4 students
(B) : 6 students
(C) : 25 students
(D) : 1 student
(E) : 3 students
Student responses
Section 5166
(A) : 5 students
(B) : 6 students
(C) : 50 students
(D) : 3 students
(E) : 2 students
20080130
Astronomy clicker question: eclipse observing
Astronomy 10, Spring Semester 2008
Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q2.4
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the end of their learning cycle:
[0.3 points.] Consider a side view of the Moon and the Earth, their respective shadow zones, and the locations of an observer. The Sun is located to the left, far off of the page.
Which view of the Moon does this observer see?
Correct answer: (D)
The Moon is partially in the umbra and penumbra of the Earth, and this would correspond to a dark red/brown shadow, and a barely noticeable shadow on the surface of the Moon, respectively. Thus an observer on the Earth would see response (D).
However, many students chose response (A), the view of the Earth blocking the Sun, which is what would be seen from the surface of the Moon, in its northern hemisphere (the portion of the near side of the Moon that is in the penumbra).
Student responses
Section 5166
(A) : 18 students
(B) : 3 students
(C) : 1 student
(D) : 27 students
Section 4160
(A) : 4 students
(B) : 6 students
(C) : 0 students
(D) : 17 students
Cuesta College, San Luis Obispo, CA
Astronomy 10 learning goal Q2.4
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the end of their learning cycle:
[0.3 points.] Consider a side view of the Moon and the Earth, their respective shadow zones, and the locations of an observer. The Sun is located to the left, far off of the page.
Which view of the Moon does this observer see?
Correct answer: (D)The Moon is partially in the umbra and penumbra of the Earth, and this would correspond to a dark red/brown shadow, and a barely noticeable shadow on the surface of the Moon, respectively. Thus an observer on the Earth would see response (D).
However, many students chose response (A), the view of the Earth blocking the Sun, which is what would be seen from the surface of the Moon, in its northern hemisphere (the portion of the near side of the Moon that is in the penumbra).
Student responses
Section 5166
(A) : 18 students
(B) : 3 students
(C) : 1 student
(D) : 27 students
Section 4160
(A) : 4 students
(B) : 6 students
(C) : 0 students
(D) : 17 students
20070829
Total lunar eclipse: August 28, 2007
070828lunareclipse.jpgOriginally uploaded by Waifer X
Total lunar eclipse sequence, photographed through Cuesta College's Dobsonian-mounted 8" reflector using a point-and-shoot 4-megapixel digital camera (Pentax Optio S40).
20070302
Astronomy current events question: no west coast U.S. lunar eclipse
Astronomy 10L, Spring Semester 2007
Cuesta College, San Luis Obispo, CA
Students are assigned to read online articles on current astronomy events (skytonight.com, from Sky & Telescope magazine), and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
[0.2 points.] On March 3, 2007 there will be a lunar eclipse for observers in Europe, and observers on the east coast of North America. Why will observers on the west coast of North America not be able to see this happening? Circle your answer below.
(A) Observers on the west coast of North America are in the northern hemisphere.
(B) There will not be enough horizon illusion.
(C) The lunar eclipse will end before the Moon rises.
(D) The Moon will be too dark.
(E) The Moon will be too far away.
Correct answer: (C).
Student responses
Section 4137
(A) : 3 students
(B) : 3 students
(C) : 17 students
(D) : 1 student
(E) : 1 student
Section 4138
(A) : 2 students
(B) : 1 students
(C) : 15 students
(D) : 3 students
(E) : 1 student
Section 4139
(A) : 0 students
(B) : 2 students
(C) : 16 students
(D) : 1 student
(E) : 0 students
However, the August 28, 2007 lunar eclipse will be visible for nearly its entire duration for observers on the west coast of North America. Students (here at Cuesta College in San Luis Obispo, CA) will be looking forward to that event...hopefully.
Cuesta College, San Luis Obispo, CA
Students are assigned to read online articles on current astronomy events (skytonight.com, from Sky & Telescope magazine), and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
[0.2 points.] On March 3, 2007 there will be a lunar eclipse for observers in Europe, and observers on the east coast of North America. Why will observers on the west coast of North America not be able to see this happening? Circle your answer below.
(A) Observers on the west coast of North America are in the northern hemisphere.
(B) There will not be enough horizon illusion.
(C) The lunar eclipse will end before the Moon rises.
(D) The Moon will be too dark.
(E) The Moon will be too far away.
Correct answer: (C).
Student responses
Section 4137
(A) : 3 students
(B) : 3 students
(C) : 17 students
(D) : 1 student
(E) : 1 student
Section 4138
(A) : 2 students
(B) : 1 students
(C) : 15 students
(D) : 3 students
(E) : 1 student
Section 4139
(A) : 0 students
(B) : 2 students
(C) : 16 students
(D) : 1 student
(E) : 0 students
However, the August 28, 2007 lunar eclipse will be visible for nearly its entire duration for observers on the west coast of North America. Students (here at Cuesta College in San Luis Obispo, CA) will be looking forward to that event...hopefully.
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