How does the moon cause tides - The moon’s gravitational pull causes the oceans to bulge on the side facing the moon and on the opposite side, creating two tidal bulges. This pull creates high tides on the side of the Earth facing the moon and also on the opposite side, resulting in two high tides and two low tides each day. The combined influence of the moon’s gravity ...

 
The tides raised by the Sun are a bit less than half those raised by the Moon.) While this tide-generating force is very small, less than 10-6 newtons per kilogram of water, it is ever-present and acts in a coordinated manner over half of the globe, and in an opposite coordinated way over the other half of the globe. Tsunamis (sometimes .... Pdf textbooks free

Slightly longer days. The moon's gravitational pull slows down the Earth’s rotation, in a phenomenon known as "tidal braking" at a rate of 2.3 milliseconds each century, so — in theory — a ...The elliptical orbit of the moon has a major effect on Earth's tides. At perigee, the moon's gravitational pull is strongest, and the lunar tidal range is ...Composition. Atmosphere. Orbit and tides. Eclipses. Seasons. Exploration. The moon is Earth's most constant companion and the easiest …The actual tides we experience are a combination of the larger effect of the Moon and the smaller effect of the Sun. When the Sun and Moon are lined up (at new ...May 15, 2001 · Tides affect the earth's rotation in two sharply contrasting ways. One way, caused by tidal friction, produces an extremely slow secular change in rotation. The other way, caused by the continual movements of the tides about the planet, produces very small but very rapid changes in rotation. These rapid changes occur at exactly the same periods ... When the sun, moon and Earth are all lined up, the sun’s tidal force works with the moon’s tidal force. The combined pull can cause the highest and …A fundamental law in physics states that gravity affects all objects in exactly the same way based on their mass. We're also told that the gravity exerted by the Moon and the Sun are responsible for tides in the ocean, including when and where they occur, and how high or low they rise or fall at certain periods of the day. But if water has the …Types and Causes of Tidal Cycles –Diurnal, Semidiurnal, Mixed Semidiurnal; Continental Interference. If the Earth were a perfect sphere without large continents, all areas on the planet would experience two equally proportioned high and low tides every lunar day. The large continents on the planet, however, block the westward …The moon's "perigee" is the point in its orbit where it is nearest to the Earth. The moon's gravitational pull on Earth is the strongest when the moon is at the perigee, which results in greater tide variation than normal. This variation creates slightly higher high tides and slightly lower low tides. Conversely, the moon's "apogee" is the ... Figure 4: The Moon's gravity residual field at the surface of the Earth is known (along with another and weaker differential effect due to the Sun) as the tide generating force. This is the primary mechanism driving tidal action, explaining two simultaneous tidal bulges; Earth's rotation accounts further for the occurrence of two high tides per ... But the moons gravity still effects Earth and not just the oceans. Just like Jupiter effects Earth's orbit while the Sun is 99% of all mass in the solar system. The N body problem delves into just how hard it is to accurately predict multi gravity objects interacting with each other. Gravity Electrostatics cause tides. What causes a bulge to be created on the opposite side of the Earth or the “far side” from the moon? Changing Angles and Changing Tides Describe how changes in the relative positions of the moon and sun change in relation to the Earth? Most people know the tides are caused by the gravitational forces of the sun and the moon. But these two celestial bodies don't have an equal role in the Earth's tides says tide expert Professor ...The movement of water toward and away from the shore is illustrated by the movement of the green seaweed. Basically, tides are very long-period waves that move through the oceans in response to the forces exerted …5 Dec 2017 ... How the tides REALLY work · How do Tides Work? How does the Moon Cause the Tides? · The Big Misconception About Electricity · Space Science ...The terms rip tide and rip current are used interchangeably, but this is a misnomer. Tides are the rising and falling of water levels in the ocean. They are primarily caused by the moon's gravitational pull, and they change gradually and predictably every day. On the other hand, rip currents are caused by the shape of the shoreline itself, and ...Does the Moon have a tidal effect on the atmosphere as well as the oceans? The Sciences. ... After all, it is the moon that causes the dominant tides in the ocean, not the sun. (The average lunar ...Tides are a natural occurrence that has a big impact on the world’s bodies of water, especially on fishing. Tides are the result of the gravitational pull of both the moon and the sun, and as such, create a regular schedule of rising and falling water levels. For fishermen, it’s important to understand how the tides work and how they will ...Earth’s tidal force upon the Moon has completed its job long ago: the Moon’s rotation has slowed so that its period of rotation exactly equals its period of revolution around Earth. Whenever this happens, an orbiting object will always show the same face to the body it orbits—it becomes tidally locked. In other words, as seen from …Composition. Atmosphere. Orbit and tides. Eclipses. Seasons. Exploration. The moon is Earth's most constant companion and the easiest …May 2, 2012. #1. I was talking to one of the underground guys today on the job and he brought up how the moon and it's cycles - new moon, old moon - affect how much dirt you will have either left over or not enough to backfill a trench. He couldn't remember which moon cycle meant which outcome - too much or too little dirt.What Cause Tides? Tides are caused by the gravitational attraction of what two celestial bodies? ... How does the moon create a bulge? What causes a bulge to be created on the opposite side of the Earth or the “far side” from the …Feb 24, 2020 · We know the Moon in our ocean tides – but how? Subscribe to ABC Science YouTube 👉 https://ab.co/2YFO4GoAustralians can watch Space Gandalf on Stargazing: Mo... How does gravity cause tides? •Moon's gravity pulls harder on near side of Earth than on far side. •Difference in Moon's gravitational pull from one side to the other “stretches” the Earth. •Water easier to deform àocean tidesAbstract Solid body tides on the Moon vary by about ±0.1 m each month. In addition to changes in shape, the Moon's gravity field and orientation in space are affected by tides. ... The pole tide for the Moon should cause distortions <0.2 mm. Appendix C enables these distortions to be calculated by substituting the degree 2 part of equation …High tides do not coincide with the location of the moon. This NASA image from the Apollo 8 mission shows the Earth viewed over the horizon of the moon. While the moon and sun cause tides on our planet, the gravitational pull of these celestial bodies does not dictate when high or low tides occur. Tides originate in the ocean and progress ... The Formation of Tides. The tide-raising forces, acting over a number of hours, produce motions of the water that result in measurable tidal bulges in the oceans. Water on the side of Earth facing the Moon flows toward it, with the greatest depths roughly at the point below the Moon. On the side of Earth opposite the Moon, water also flows to ... In a report released today, Andrew Semple from Echelon Wealth Partners reiterated a Buy rating on High Tide (HITI – Research Report), with... In a report released today, Andr... High tides do not coincide with the location of the moon. This NASA image from the Apollo 8 mission shows the Earth viewed over the horizon of the moon. While the moon and sun cause tides on our planet, the gravitational pull of these celestial bodies does not dictate when high or low tides occur. Tides originate in the ocean and progress ... Yes, the gravitational pull of the moon on earth causes the earth to bulge in its shape. Intern, the earth rotates, causing a centrifugal force. There are two bulges in the earth, and every time the earth rotates past each bulge, there will be a high tide. When the earth is not in one of the two bulges, there will be a low tide. The tides raised by the Sun are a bit less than half those raised by the Moon.) While this tide-generating force is very small, less than 10-6 newtons per kilogram of water, it is ever-present and acts in a coordinated manner over half of the globe, and in an opposite coordinated way over the other half of the globe. Tsunamis (sometimes ... Our moon does have a gravitational pull on the atmosphere as well, but like the sun’s impact on our ocean tides, it’s a much weaker effect than the heating provided by the sun. If the moon ...Spring Tides. The phases of the moon also affect tides. When the moon is at its full or new moon phase, high tides are at their highest, while low tides are lower than usual. Called spring tides, these tides occur when the sun, moon and the Earth all line up. The added gravity of the sun can make the oceans bulge more than at other times.: Get the latest Tide Water Oil stock price and detailed information including news, historical charts and realtime prices. Indices Commodities Currencies StocksJun 18, 2021 · The moon’s gravitational pull acts on the earth. This force of gravity creates tidal pull. The gravitational pull causes the earth to bulge on the side closest to the moon. It also bulges on the other side of the earth. As a result, oceans rise. The bulging areas experience high tides. The other areas experience low. 6 Feb 2020 ... And during both full and new moons, when the earth, moon and sun all line up, their gravitational powers combined cause these more extreme tides ... What causes sea tides on Earth, and how is the Moon involved? The changing gravitational pull between Earth and the moon is what creates the tides. In fact, this type of gravitational force is referred to as tidal force. Although we think of Earth as spherical, the moon’s gravitational pull stretches Earth into a slightly oval shape. This distortion of Earth’s shape is negligible on solid land.Our moon does have a gravitational pull on the atmosphere as well, but like the sun’s impact on our ocean tides, it’s a much weaker effect than the heating provided by the sun. If the moon ...The primary force behind the creation of tides is the gravitational pull exerted by the Moon on Earth. The Moon's gravitational attraction is strongest on the side of the Earth facing the Moon and weaker on the opposite side. This difference in gravitational force creates what we know as tidal bulges.Moon phases are what of the moon we can see from Earth. Lunar tides are caused by the moon's gravity pulling on the water on Earth. High tide occurs when the moon is directly in line with the body of water in question. Low tide occurs when the body is perpendicular to the force of gravity. Solar tides are caused the same way as lunar …Time to take out your camera: tonight's full moon in the Northern Hemisphere will be the biggest it's been in 15 years. Time to take out your camera: tonight's full moon in the Nor... Tides. Wind is the primary force that causes ocean surface waves, but it does not cause the tides. Tides are the daily changes in the level of the ocean water at any given place. The main factors that causes tides are the gravitational pull of the Moon and the Sun (Figure 14.10). 16 Sept 2014 ... USA TODAY had a great explanation of the lunar influence on tides back in 2007: "During both new and full moon phases, the gravitational ...Dec 19, 2015 · Our moon does have a gravitational pull on the atmosphere as well, but like the sun’s impact on our ocean tides, it’s a much weaker effect than the heating provided by the sun. If the moon ... Summary. The moon’s gravitational pull causes the oceans to bulge on the side facing the moon and on the opposite side, creating two tidal bulges. This pull …Both the moon and sun affect the tides, but since the moon is much closer to the earth (384,400 km instead of 149,600,000 km), it has more than twice the effect ...7 Feb 2023 ... The researchers are unsure exactly how the moon causes the plasma tides, but their current best guess is that the moon's gravity causes ...Tidal currents are the only type of current affected by the interactions of the Earth, sun, and moon. The moon’s force is much greater than that of the sun because it is 389 times closer to the … The moon's gravity is not the only force that affects the tides. The sun's gravity also affects the tides, but to a lesser extent. The sun's gravity causes the Earth's oceans to bulge out on the side of the Earth that is facing the sun. This bulge is called the solar tide. The solar tide is considerably smaller than the lunar tide. In a nutshell, they're primarily caused by the moon's gravitational pull upon the Earth. That force can have two separate components. It can pull matter "vertically," by which we mean perpendicularly to the Earth's surface. And it can also pull things "horizontally" — i.e., in a direction that runs parallel to the face of our planet.It’s this differing balance that causes the tides, by virtue of creating a bidirectional tidal bulge that draws the waters of the ocean out both in the direction of the Moon and in the direction away from the Moon, relative to directions normal to the Earth– Moon axis (Figure 6-3). (The solid Earth undergoes the same effect, as what are ... Tides are the periodic rising and falling of ocean waters caused by the gravitational forces of the sun and moon. The vertical motion of tides is accompanied by a horizontal movement of ocean waters called tidal currents. Oceanographers say that tides rise and fall, while tidal currents ebb (during a falling tide) and flood (during a rising ... US states along the Gulf of Mexico are already struggling with a toxic algae bloom killing marine life. The coming hurricane could make things worse. There’s usually not even a sli...It is known that the Moon causes tides. Given that the human body is 60%-70% water, is there any research that shows that the tides affect humans in any tangible way? If this is not the appropriate place to ask, then please let me know a …Sep 25, 2019 · Tides are the rise and fall of sea levels. At some parts of the day there will be more water in one location and at other parts of the day there will be less. The tidal effect, as its known, doesn ... 3 Aug 2020 ... Simple answer: The water on the opposite side from the moon isn't bulging away from the moon, the Earth is being pulled toward the moon from ...Waves cause the ocean to move all day long. And #... If you’ve ever spent a day at the beach, you’ve probably noticed that the ocean water is constantly moving. Waves cause the ocean to move ...Moon phases are what of the moon we can see from Earth. Lunar tides are caused by the moon's gravity pulling on the water on Earth. High tide occurs when the moon is directly in line with the body of water in question. Low tide occurs when the body is perpendicular to the force of gravity. Solar tides are caused the same way as lunar … The theoretical amplitude of oceanic tides caused by the Moon is about 54 centimetres (21 in) at the highest point, which corresponds to the amplitude that would be reached if the ocean possessed a uniform depth, there were no landmasses, and the Earth were rotating in step with the Moon's orbit. The Sun similarly causes tides, of which the ... Tides are the rise and fall of sea levels around the world. There are two high tides and two low tides each day. The size of the high and low tides change over the month. During a full moon or a ... The Moon and Earth exert a gravitational pull on each other. On Earth, the Moon’s gravitational pull causes the oceans to bulge out on both the side closest to the Moon and the side farthest from the Moon. These bulges create high tides. The low points are where low tides occur. The Moon’s gravitational pull on Earth, combined with other ...The force of the Moon and the spin of the Earth cause two tidal bulges to form, one that follows the Moon, and one on the opposite side of the planet. These two tidal bulges move around the Earth with a period of 12.5 hours. When the buldge moves over a coast, a high tide occurs, and when a bulge is not over a coast, a … The theoretical amplitude of oceanic tides caused by the Moon is about 54 centimetres (21 in) at the highest point, which corresponds to the amplitude that would be reached if the ocean possessed a uniform depth, there were no landmasses, and the Earth were rotating in step with the Moon's orbit. The Sun similarly causes tides, of which the ... The height of those tides also follows roughly two-week cycles – the 14.8 day “spring-neap cycle”, which is driven by the combined pull of the Moon and Sun, and the 13.7-day “declination ...A nugget of wisdom that Warren Buffett has passed along more than once to Berkshire Hathaway investors is this: "You only find out who is… By clicking "TRY IT", I agree to r... Over the rest of the globe gravity and inertia are in relative balance. Because water is fluid, the two bulges stay aligned with the moon as the Earth rotates (Ross, D.A., 1995). The sun also plays a major role, affecting the size and position of the two tidal bulges. The tides raised by the Sun are a bit less than half those raised by the Moon.) While this tide-generating force is very small, less than 10-6 newtons per kilogram of water, it is ever-present and acts in a coordinated manner over half of the globe, and in an opposite coordinated way over the other half of the globe. Tsunamis (sometimes ...The rise and fall of tides are caused primarily by the moon. Though much smaller, the moon exerts 2.25 times the amount of gravitational pull on the oceans as does the sun. This is due to it being so much closer to Earth. When tides fall, the water goes from the poles to the equator. The spinning Earth creates …Jan 10, 2024 · The primary force behind the creation of tides is the gravitational pull exerted by the Moon on Earth. The Moon's gravitational attraction is strongest on the side of the Earth facing the Moon and weaker on the opposite side. This difference in gravitational force creates what we know as tidal bulges. The moon's smaller gravitational exertion in comparison to the sun's is contravened by its proximity to Earth. For instance, the moon is 2.17 times more effective than the massive sun in raising tides on Earth. When the moon does have an effect on weather, it is usually an indirect one. A variety of factors overwhelm the moon’s …Intertidal Zones and Species. In the intertidal zone, species experience significant changes in moisture levels. The high tide may place plants …The gravitational pull of the moon gives rise to the tidal force. This force generates bulges in the water bodies on the earth, and these bulges are commonly ... The theoretical amplitude of oceanic tides caused by the Moon is about 54 centimetres (21 in) at the highest point, which corresponds to the amplitude that would be reached if the ocean possessed a uniform depth, there were no landmasses, and the Earth were rotating in step with the Moon's orbit. The Sun similarly causes tides, of which the ... The theoretical amplitude of oceanic tides caused by the Moon is about 54 centimetres (21 in) at the highest point, which corresponds to the amplitude that would be reached if the ocean possessed a uniform depth, there were no landmasses, and the Earth were rotating in step with the Moon's orbit. The Sun similarly causes tides, of which the ...New Moon. This is the invisible phase of the Moon, with the illuminated side of the Moon facing the Sun and the night side facing Earth. In this phase, the Moon is in the same part of the sky as the Sun and rises and sets with the Sun. Not only is the illuminated side facing away from the Earth, it’s also up during the day!Summarize that the Moon's gravitational pull creates two high and low tides for most coastal areas on Earth each day. As the Earth spins, the tide flows in and ...Local governments and travel agencies are making the most of the world's most lucrative tourists being stuck close to home. On previous Lunar New Year holidays, Gelato Fu could be ...How does gravity cause tides? •Moon's gravity pulls harder on near side of Earth than on far side. •Difference in Moon's gravitational pull from one side to the other “stretches” the Earth. •Water easier to deform àocean tidesUS states along the Gulf of Mexico are already struggling with a toxic algae bloom killing marine life. The coming hurricane could make things worse. There’s usually not even a sli...Feb 24, 2020 · We know the Moon in our ocean tides – but how? Subscribe to ABC Science YouTube 👉 https://ab.co/2YFO4GoAustralians can watch Space Gandalf on Stargazing: Mo... The eight Moon phases: 🌑 New: We cannot see the Moon when it is a new moon. 🌒 Waxing Crescent: In the Northern Hemisphere, we see the waxing crescent phase as a thin crescent of light on the right. 🌓 First Quarter: We see the first quarter phase as a half moon. 🌔 Waxing Gibbous: The waxing gibbous phase is … Tides are the periodic rising and falling of ocean waters caused by the gravitational forces of the sun and moon. The vertical motion of tides is accompanied by a horizontal movement of ocean waters called tidal currents. Oceanographers say that tides rise and fall, while tidal currents ebb (during a falling tide) and flood (during a rising ... Posted 11.19.02. NOVA. In this animated interactive, see how the motion of the Earth creates inertial forces that combine with the gravity of the moon and sun to produce ocean tides on our planet ...Lunar tides create deformation on the ocean's water surface due to the combined effect of gravitational and centrifugal forces (Fig. 14.5). This deformation ...Tides are the rise and fall of sea levels around the world. There are two high tides and two low tides each day. The size of the high and low tides change over the month. During a full moon or a ...The Moon’s gravity pulls upwards on Earth’s water, causing it to bulge out in the direction of the Moon. On the other side of the Earth, a high tide is produced where the Moon’s pull is weakest. As the Earth rotates on its axis, the areas directly in line with the Moon experience high tides.Dec 2, 2022 · Historical Date: November 23, 2020. An enduring myth about the Moon is that it doesn't rotate. While it's true that the Moon keeps the same face to us, this only happens because the Moon rotates at the same rate as its orbital motion, a special case of tidal locking called synchronous rotation. The animation shows both the orbit and the ... Along many of the rocky shorelines in the United States, visitors can observe unique natural habitats called tide pools. Tide pools provide an up-close look at some of the marine l...The combined forces of gravity, the Earth's rotation, and other factors usually cause two high tides and two low tides each day. Photos: Exploring the Moon 1 of 8It takes the Earth an extra 50 minutes to “catch up” to the moon. Tides are very long waves that move across the oceans. They are caused by the gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun. When the highest point in the wave, or the crest, reaches a coast, the coast experiences a high tide.

Dec 2, 2022 · Historical Date: November 23, 2020. An enduring myth about the Moon is that it doesn't rotate. While it's true that the Moon keeps the same face to us, this only happens because the Moon rotates at the same rate as its orbital motion, a special case of tidal locking called synchronous rotation. The animation shows both the orbit and the ... . New balance kawhi 2

how does the moon cause tides

The Moon’s gravity causes our oceans to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides. The low points are where low tides occur. Tides have a significant effect on the weather, affecting the movement of ocean currents. In turn, this affects the weather through the …The ratio of the Sun or Moon tidal forces on Earth is 0.465. The tidal stretch of the human body (standing) changes its height by the fraction 10-16, an amount 1000 times smaller than the atom’s diameter. By comparison, the body’s weight’s stress causes a fractional change in body height of 10-2.Most people know that the moon’s gravitational influence has an effect on the tides on Earth, but some scientists also believe that the presence of the moon played an important rol...Low tide is when the ocean waters reach their maximum ebb in a location. Low tides are caused by the gravitational pull of the moon and occur every 12 hours, 26 minutes. The averag...Oct 19, 2023 · Some freshwater rivers and lakes can have . tides, too. A high tide that is significantly higher than normal is called a king tide. It often accompanies a new moon and when the moon is closest to the Earth.The moon’s gravitational pull on the Earth and the Earth’s rotational force are the two main factors that cause high and . low tides. During spring tides, Earth, the Moon, and the Sun are aligned and the tidal effects add. (Recall that the tidal forces cause bulges on both sides.) Figure \(\PageIndex{1c}\) shows the relative positions for the smallest tides, called neap tides. The extremes of both high and low tides are affected. Spring tides occur during the new or …A neap tide —seven days after a spring tide—refers to a period of moderate tides when the sun and moon are at right angles to each other. A spring tide is a common historical term that has nothing to do with the season of spring. Rather, the term is derived from the concept of the tide "springing forth." Spring tides occur twice each lunar ...In a nutshell, they're primarily caused by the moon's gravitational pull upon the Earth. That force can have two separate components. It can pull matter "vertically," by which we mean perpendicularly to the Earth's surface. And it can also pull things "horizontally" — i.e., in a direction that runs parallel to the face of our planet.The terms rip tide and rip current are used interchangeably, but this is a misnomer. Tides are the rising and falling of water levels in the ocean. They are primarily caused by the moon's gravitational pull, and they change gradually and predictably every day. On the other hand, rip currents are caused by the shape of the shoreline itself, and ...Hello and welcome back to Equity, TechCrunch’s venture capital-focused podcast, where we unpack the numbers behind the headlines. This week we were back to full strength, with Dann...Chapter 3 - Detailed Explanation of the Differential Tide Producing Forces. The tide-raising forces at the earth's surface thus result from a combination of basic forces: (1) the force of gravitation exerted by the moon (and sun) upon the earth; and (2) centrifugal forces produced by the revolutions of the earth and moon (and earth and sun) around their …The Sun’s gravity pulls on Earth’s water, while the Moon’s gravity pulls on the water in the same places. The high tide produced by Sun adds to the high tide produced by the Moon. So spring tides have higher than normal high tides. This water is shown on the picture as the gray bulges on opposite sides of the Earth.Sun's Tidal Effect. Even though the Sun is 391 times as far away from the Earth as the Moon, its force on the Earth is about 175 times as large.Yet its tidal effect is smaller than that of the Moon because tides are caused by the difference in gravity field across the Earth. The Earth's diameter is such a small fraction of the Sun-Earth distance that the …May 15, 2001 · Tides affect the earth's rotation in two sharply contrasting ways. One way, caused by tidal friction, produces an extremely slow secular change in rotation. The other way, caused by the continual movements of the tides about the planet, produces very small but very rapid changes in rotation. These rapid changes occur at exactly the same periods ... The Short Answer: Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.The tides raised by the Sun are a bit less than half those raised by the Moon.) While this tide-generating force is very small, less than 10-6 newtons per kilogram of water, it is ever-present and acts in a coordinated manner over half of the globe, and in an opposite coordinated way over the other half of the globe. Tsunamis (sometimes ...The Moon's gravity pulls the oceans (and us) towards it, but the Sun and the Earth also have an effect on the tides. The Moon's gravity is strongest when it is new or full, and the Sun's … The ratio of the Sun or Moon tidal forces on Earth is 0.465. The tidal stretch of the human body (standing) changes its height by the fraction 10-16, an amount 1000 times smaller than the atom's diameter. By comparison, the body's weight's stress causes a fractional change in body height of 10-2. The height of those tides also follows roughly two-week cycles – the 14.8 day “spring-neap cycle”, which is driven by the combined pull of the Moon and Sun, and the 13.7-day “declination ...Learn how the moon's gravitational pull creates the tidal force that causes Earth and its water to bulge out on opposite sides. Find out how the sun, weather, and other factors affect …Tidal interaction between the barred spiral galaxy NGC 169 and a smaller companion. The tidal force or tide-generating force is a gravitational effect that stretches a body along the line towards and away from the center of mass of another body due to spatial variations in strength in gravitational field from the other body. It is responsible for the tides and ….

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