The cause of the phase of the Moon

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Which of the following statements about the cause of the phase of the Moon is correct? a) The phase of the Moon depends on the alignment of the Earth, Moon, and Sun, While half of the Moon is always illuminated by the Sun, it is not always the half that is facing the Earth. b) The Moon always receives the same amount of illumination; it’s just that in some alignments the Earth casts a larger shadow on the Moon making it change phase c) The phase of the Moon depends on the alignment of the Earth, Moon, and Sun. During some alignments, only a small portion of the Moon will receive light from the Sun so it will be something less than a full Moon

The rotational velocity of Jupiter

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Calculate the rotational velocity of Jupiter in kilometers per hour (km/h). Show your work. 40) Convert both
of the rotational velocities you determined in questions 20 and 21 to miles per hour (mi/hr), then calculate how
many times faster Jupiter rotates than the earth rotates. il km 0.62 mi] Show your work.

The orbital period of the planet

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There is a one-earth mass planet orbiting an M5 star of 0.2 Mo and luminosity 1×10-2 Lo. A) How close does the planet need to be to the star in order to receive the same amount of energy as the Earth receives from the sun? (The solar flux is 1.386×10 erg s-] cm-?) B) What is the orbital period of the planet at this distance? C) What is the magnitude of the radial velocity perturbation of the star? D) If the system is edge on to us, would we be likely to detect this planet using the radial velocity method?

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Space swap fundamental characters

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This week let’s explore a strange place where time and space swap fundamental characters, inside a black hole. Start with this article https://www.space.com/what-happens-black-hole-center Links to an external site. and then research either a gravastar or a Planck star. Your original post should contain at least the most interesting things you found in your research as well as one original opinion you have regarding those things and one question it raised for you.

You’re welcome to use any reputable scientific news source (major newspapers, Scientific American, Physics Today, National Geographic, etc.) or sites that aggregate astronomy news. Here are some good starting points:

  • Spaceref.com: Good Astronomy news site
  • Science Daily: Astronomy (and other science) news
  • Spaceflight Now: Cool news on space flights

For this discussion, it is especially important that you reference your source, but just like before, a URL is an acceptable reference for these discussions.

The arc of a secondary rainbow

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You are looking at the top of the arc of a secondary rainbow, using a telescope, with the sun at your back. You are able to see and follow an individual raindrop, as it falls from the top of the rainbow to the bottom of the rainbow. Discuss and explain the color of the raindrop as it falls from the rainbow top to the rainbow bottom.

Scientific notation 

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Please provide written explanations for all conceptual questions. Could one please show all of their work for any mathematical calculations so I can understand?

  1. The diameter of the Sun is 1.4  106 km, and the distance between the sun and the Epsilon Eridani star is 10.47 ly. Calculate how many Suns it would take, laid side by side, to reach the Epsilon Eridani star. Use scientific notation
  2. At what distance is an object if its parallax, as measured from either end of a 1000-km baseline, is (a) 1°; (b) 1; (c) 1(5 mars)?
  3. On November 1 at 11:00 P.M., you look toward the eastern horizon and see the bright star Mintaka rising. At approximately what time will Mintaka rise one week later, on November 8? Explain the answer.
  4. The photograph of the Earth shown below was taken by the crew of the Apollo 8 spacecraft as they orbited the Moon in 1968. A portion of the lunar surface is visible on the right-hand side of the photo. In this photo, the Earth is oriented with its North Pole approximately at the top. When this photo was taken, what was the phase of the Moon as seen from Earth? Explain the answer with a diagram.

5. What is the maximum possible angle of elevation of the Sun above the horizon at the North Pole? Explain

The star Nebula uses

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Start A Stellar Flowchart:: Decrease Word Bank 1. All stars begin in large 17. When a star’s core runs out Can need thinner once clouds of gas and dust are called: hydrogen and gravity begin Brown Dwarf collapsing the star. As the star Nebula uses, the pressure # Increase Decrease Increase Remains the same, and the temperature Neutron Star Gravity Black Dwarf making the core hot enough to:: Supergiant causes gas and dust Nebula a condense and spin start fusing helium and other heavy elements. While Dwarf #: Red Giant Supernova Main Sequence 3. What is this 18? As a massive star collapses Brown Dwarf Is the mass object called? into a black hole, the star’s volume Mass large enough to create a Planetary Red Giant protostar? Brown but the mass Nebula Planetary Nebula Black Hole thus making the density Gravity #: Black hole Pulsar Hydrogen 4. At 10 million K. J. Where on the H-R # Helium Hydrogen| #:

Nebula Diagram is the star? 10. Stars lose Iron and begin to fuse into Carbon Helium Main and the star begins throughout their lifetimes through various events. Over millions of Main Io shine. years, this lost material eventually forms new nebulae Sequence which eventually forms new stars Hydrogen bums in the Is it a Hydrogen burns:: Black Dwarf core via proton Iwasaive star Massive In core via a chain reaction of low mass carbon-nitrogen- start oxygen cycle:: White Dwarf 6. The core eventually runs out of hydrogen. The core 7. What is the 11. The core eventually runs contracts, heats up and largest element out of hydrogen. The care 12. What is the begins burning helium? The a low mass star contracts, heats up and largest element begins bumping helium. The a massive star Neutron Star outer layers expand and cool can create in its outer layers expand and cool can create in its off. The star in now called a: Ca off. The star is now called a core by fusion? Red Giant :: Carbon Supergiant Iron :: Gravity 8. Eventually the red giant sheds its outer Layers. This 13. Eventually as gravity gaseous object is called a crushes the atoms together, the nudel repel each other 16. A neutron star may #: Hydrogen releasing an explosive appear to emit flashes Planetary shock wave expelling the of radiation. This outer layers of the star. This neutron star is called a: #: Mass explosion is called a: Pulsar 9. Now just the core remains There is no more fusion and Type II the star just shines by residual energy. This small, 14. Star collapses. 15. Intense pressure Remain the hot object is now called &: The gravitational pull is fuses elections with Same so great, nothing can protons dealing White – escape . This object Is the mass that can no longer be 15 times neutrons. This extremely seen is called a: greater than dende object is called a: he mass of :: Helium 10. Once the star cools off our Sun? Neutron completely it is called a Black Star hole Iron Black :: Pulsar Type II Supernova

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Advantages and disadvantages of apparent solar time

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Make a list of each main phase of the Moon, describing roughly when the Moon rises and sets for each phase. During which phase can you see the Moon in the middle of the morning? In the middle of the afternoon? 4. What are the advantages and disadvantages of apparent solar time? How is the situation improved by introducing mean solar time and standard time? 5.

What are the two ways that the tilt of Earth’s axis causes the summers in the United States to be warmer than the winters? 6. Why is it difficult to construct a practical calendar based on the Moon’s cycle of phases? 7. Explain why there are two high tides and two low tides each day. Strictly speaking, should the period during which there are two high tides be 24 hours? If not, what should the interval be? 8. What is the phase of the Moon during a total solar eclipse? During a total lunar eclipse? 9. On a globe or world map, find the nearest marked latitude line to your location. Is this an example of a great circle? Explain. 10. Explain three lines of evidence that indicate that the seasons in North America are not caused by the changing Earth-Sun distance as a result of Earth’s elliptical orbit around the Sun. 11. What is the origin of the terms “a.m.” and “p.m.” in our timekeeping? 12. Explain the origin of the leap year. Why is it necessary?

The force of gravity between two objects

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Question 1 1 pts Ancient civilizations had no idea what caused the ocean tides, or any idea what it was related to. O True O False D Question 2 1 pts The force of gravity between two objects increases as the distance between those objects increases. O True O False Question 3 1 pts In the image below, why do the red arrows have different lengths? Moon Earth O The strength of the gravitational force of the Moon varies depending on where you are on Earth. O The different lengths don’t mean anything. O They show how much water moves on the Earth. The arrows show where the tides occur. D Question 4 1 pts Why do the oceans demonstrate the largest tidal changes compared to other materials on Earth? O Water is attracted to the Moon. O The force of gravity on the water is stronger than on other materials. O Rock is actually more affected by the tides than water. O Water is liquid and can flow easily. D Question 5 1 pts The Moon is as a result of tidal that slowed the rotation rate of the Moon slowly over time. O speeding up, friction O tidally locked, friction O slowing down, light O getting closer to Earth, forcing D Question 6 1 pts There are high and low tides as the Earth rotates under the tidal every day. O two, bulges O two, friction O three, forces O four, bulges

Angle of elevation of the Sun

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The diameter of the Sun is 1.4  106 km, and the distance between the sun and the Epsilon Eridani star is 10.47 ly. Calculate how many Suns it would take, laid side by side, to reach the Epsilon Eridani star. Use scientific notation.

At what distance is an object if its parallax, as measured from either end of a 1000-km baseline, is (a) 1°; (b) 1; (c) 1(5 mars)?

On November 1 at 11:00 P.M., you look toward the eastern horizon and see the bright star Mintaka rising. At approximately what time will Mintaka rise one week later, on November 8? Explain your answer.

The photograph of the Earth shown below was taken by the crew of the Apollo 8 spacecraft as they orbited the Moon in 1968. A portion of the lunar surface is visible at the right-hand side of the photo. In this photo, the Earth is oriented with its North Pole approximately at the top. When this photo was taken, what was the phase of the Moon as seen from Earth? how would it be explained In a diagram

What is the maximum possible angle of elevation of the Sun above the horizon at the North Pole? Explain your answer.

A key concept is that astronomy has influence outside the field of science. Astronomy actually plays a much larger role in our lives than many people think. We use words like month and disaster (literally “disaster,” or “against the stars”), or refer to the days of the week (which are named after the Sun, Moon, and the five easily visible planets), without consciously making the connection to the Moon, the star, or the planets. Let me give you an example: Cars – Ford Taurus, Chevy Nova, Subaru, Mercury. Please mention at least a few words