1404_Ch 3 Assignment Done

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Lone Star College System, Woodlands *

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1404

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Astronomy

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Dec 6, 2023

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docx

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PHYS 1404: Chapter 3 – Moon Phases and Eclipses –Assignment © 2018-2023 Lone Star College. All Rights Reserved. Write your Name. Do not alter header or question numbers. Abide by LSC Academic Integrity. Name: Alexis Diaz 1. How long in days does it take for the moon to circle the sky and return to the same place (relative to the fixed stars) and what is it called? 30 days and sidereal month 2. The time from new moon to new moon is one Lunar period and it is 29 days. 3. Explain why a synodic period longer than a sidereal period? the earth orbits the sun at the same time the moon goes through its phases. 4. Explain the difference between total lunar eclipse, partial lunar eclipse and penumbral lunar eclipse. The difference between a total lunar eclipse and a partial lunar eclipse is determined solely by how much of the moon’s face passes through the dark, umbral shadow of the earth. When the moon does not pass through any part of the umbra, but passes through the penumbra only, then the eclipse may be called partial, or it may be called penumbral. 5. Explain why Moon appear reddish during a total lunar eclipse and not go completely dark? the only sunlight reaching the Moon passes through Earth's atmosphere. 6. At midnight, what phase of moon would you find on the eastern horizon? Last quarter 7. Explain why do we always see the same face of the moon from Earth? the period of rotation of the moon on its axis is equal to the period of its revolution around the earth 8. The umbra is the darkest part of the Earth’s shadow. 9. Which do you have a better chance of seeing, a total solar eclipse or a total lunar eclipse? Why ? Lunar eclipses are more widely visible because Earth casts a

PHYS 1404: Chapter 3 – Moon Phases and Eclipses –Assignment © 2018-2023 Lone Star College. All Rights Reserved. Write your Name. Do not alter header or question numbers. Abide by LSC Academic Integrity. much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse 10. During a total solar eclipse, the faint outermost layer of the sun called the corona becomes visible. 11. Solar eclipses can only occur during a New moon, and lunar eclipses can only occur during a Full moon. 12. After one Saros cycle, the pattern of eclipses repeats. However, a particular eclipse won’t be visible in the same location on Earth from one cycle to the next. Why is this? because the Saros period is not equal to a whole number of days 13. Go to “current events” tab in your course. Read “How NASA has prepared to scoop up an asteroid sample landing in the desert”. Write 10 - 15 sentence summary of this article. NASA's first asteroid sample return mission, the OSIRIS-REx mission, is set to reach Earth after nearly 2½ years of travel across space. The sample, originally collected from the near-Earth asteroid Bennu, could reveal insights about the formation of our solar system and how life on Earth began. The mission team has been rehearsing how to retrieve the sample, which is estimated to have collected up to 8.8 ounces of material from Bennu. The sample will help shed light on the formation of our solar system 4.5 billion years ago and how life on Earth began. The capsule will enter Earth's atmosphere at 10:42 a.m. ET, traveling about 27,650 miles per hour (44,498 kilometers per hour). The decision to release the capsule depends on the

PHYS 1404: Chapter 3 – Moon Phases and Eclipses –Assignment © 2018-2023 Lone Star College. All Rights Reserved. Write your Name. Do not alter header or question numbers. Abide by LSC Academic Integrity. spacecraft's trajectory, which determines the safety of humans within the landing zone, the capsule's ability to survive the angle, the temperature of reentry, and accuracy of landing. Once the capsule releases, OSIRIS-REx will make a divert maneuver that sets it on a path around the sun as it targets another asteroid, Apophis, for a rendezvous in 2029. After landing, a helicopter will carry the sample in a cargo net and deliver it to a temporary cleanroom established at the range in June. A team will prepare the sample container for transport on a C-17 aircraft to NASA's Johnson Space Center in Houston on September 25. Details about the sample will be revealed to the public through a NASA broadcast from Johnson on October 11. The sample will reveal information about the formation and history of our solar system, as well as the role of asteroids in helping develop habitable planets such as Earth. Scientists believe that asteroids such as Bennu crashed into Earth early during their formation, delivering elements like water. 14. Go to “current events” tab in your course. Read “Blood moons explained: Why the moon turns red during lunar eclipses”. Write 10 - 15 sentence summary of this article. A total lunar eclipse occurs when the moon passes directly through Earth's innermost shadow, causing it to change color from white to "blood" red. This change in color is attributed to the light passing through the Earth's atmosphere, which is preferentially filtered and diverted into the Earth's shadow, resulting in the moon appearing red or "blood" color. This change in

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PHYS 1404: Chapter 3 – Moon Phases and Eclipses –Assignment © 2018-2023 Lone Star College. All Rights Reserved. Write your Name. Do not alter header or question numbers. Abide by LSC Academic Integrity. color earned the term "blood moon" in astronomy. Predicting the color of the moon during a total lunar eclipse can be difficult due to certain conditions in Earth's atmosphere, such as the amount of dust and clouds in the atmosphere. If there are extra particles from a recent volcanic eruption, the moon will appear a darker shade of red. To visualize this change in color, imagine standing on the surface of the moon during a total lunar eclipse, where you would see every sunrise and sunset happening on Earth at the same time. Total lunar eclipses are one of the easiest celestial events to witness in the night sky, as long as cloud-free conditions are present. These eclipses typically last for several hours and are visible across a large area of the globe, allowing millions of people to witness the moon turn red every time they happen.

1404_Ch 3 Assignment Done

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