Tides are caused by the gravitational forces of the moon and sun interacting with Earth's oceans, which creates two bulges of water that result in two high tides and two low tides each day. The changing positions and distances of the moon and sun relative to Earth cause variations in tide heights and times. Spring tides occur during new and full moons when the sun and moon are aligned, producing the highest tides, while neap tides happen when the sun and moon are at right angles, resulting in lower tides.
Seas and Oceans are dynamic ecosystems. Oceans are very vast bodies of water. Wind blowing on the surface of the ocean has the greatest effect on the movement of surface water. Vertical or horizontal movement of both surface and deep water masses happen in the world’s oceans. They are called as Ocean currents. Currents normally move in certain specific directions. Hence, they aid in the circulation of the moisture on Earth. Because ocean currents circulate water worldwide, they have a significant impact on the movement of energy and moisture between the oceans and the atmosphere. As a result, they are important to the world’s weather.
Waves are never ending dynamic surfaces created by the action of wind on ocean surfaces. Waves are undulations of the surface layers of bodies of sea waters. Large bodies of water are almost constantly in motion. Ocean surface are never calm and smooth.They are uneven, irregular, rough and restless. Sea waves are defined as undulations of seawater characterized by unique features. Waves are moving energy patterns. They travel along the interface between ocean and the atmosphere.
This is my second presentation. Me and my friend created this presentation. This presentation tropic is Indian shoreline classification. So all people watch this tropic and comment my fault for this tropic. And comments for new tropic name so i am help for help for any geography subject related tropic. THANK YOU
The subject of studying the physical, chemical and biological conditions of oceans is called as Oceanography.
It is an inter-disciplinary subject and an emerging area for marine engineering. It is the science of seas and oceans.
Seas and Oceans are dynamic ecosystems. Oceans are very vast bodies of water. Wind blowing on the surface of the ocean has the greatest effect on the movement of surface water. Vertical or horizontal movement of both surface and deep water masses happen in the world’s oceans. They are called as Ocean currents. Currents normally move in certain specific directions. Hence, they aid in the circulation of the moisture on Earth. Because ocean currents circulate water worldwide, they have a significant impact on the movement of energy and moisture between the oceans and the atmosphere. As a result, they are important to the world’s weather.
Waves are never ending dynamic surfaces created by the action of wind on ocean surfaces. Waves are undulations of the surface layers of bodies of sea waters. Large bodies of water are almost constantly in motion. Ocean surface are never calm and smooth.They are uneven, irregular, rough and restless. Sea waves are defined as undulations of seawater characterized by unique features. Waves are moving energy patterns. They travel along the interface between ocean and the atmosphere.
This is my second presentation. Me and my friend created this presentation. This presentation tropic is Indian shoreline classification. So all people watch this tropic and comment my fault for this tropic. And comments for new tropic name so i am help for help for any geography subject related tropic. THANK YOU
The subject of studying the physical, chemical and biological conditions of oceans is called as Oceanography.
It is an inter-disciplinary subject and an emerging area for marine engineering. It is the science of seas and oceans.
Lab 6 Tides and Coastal processes Goals1. Understand wha.docxsmile790243
Lab 6: Tides and Coastal processes
Goals:
1. Understand what causes tides.
2. Understand how deep-ocean waves change and break when they reach a coastline.
3. Understand how shoreline transport of sediment occurs and how it is affected by human activities.
Tides
Tides are actually waves that move through the oceans and large lakes. In the oceans, they have periods of several hours and wavelengths of 1000s of kilometers. Depending on the wave period that dominates in different parts of the world, some places have only one high and one low tide a day (diurnal tides), whereas others have two high (about equal to each other) and two low tides (also about equal to each other) known as semidiurnal. A third type is mixed tides with two highs and two lows a day with different heights, (a high high, a low high, a high low and a low low). California, as the rest of the west coast has mixed tides.
The gravitational pull of the Sun and the Moon causes tides on Earth. The gravitational influence of an object is directly related to its mass and its distance from another object. So even though the Sun has much more mass than the Moon, it is over 380 times farther away from the Earth than the Moon. Therefore, our little Moon wins out and has the most influence on the tides on Earth.
As the Earth spins about its axis, centrifugal force keeps water balanced on all sides of the planet. However, the Moon's gravitational forces disrupt this balance by pulling the water towards the Moon. A double "bulge" is formed—one side pulling toward the Moon and the opposite side pulling away from it, just like swinging a water balloon causes it to stretch both toward AND away from your hand. The areas where the bulging occurs experience high tides.
Tides are predictable, but their periods do not coincide with the 24 hour Earth day. The Moon takes about 24 hours and 50 minutes to line up again exactly with the same point on the Earth. Therefore, the timing of the tides shifts almost an hour a day. Because the relative positions of the Sun, Earth and Moon change over the course a day, a month and a year, the absolute heights of diurnal, semidiurnal and mixed tides vary over these periods. For example, even within the same ~25 hour period, the heights of the semidiurnal tides are not exactly the same, although they are close. Even more significant changes are seen over a monthly cycle, with higher-than-normalspring tides (not named for the season but because the water "springs" higher than normal) and the lower-than-normalneap tides.
Exercise 1.
Let's investigate the causes of spring and neap tides. Go to this websitehttp://aspire.cosmic-ray.org/Labs/Tides/tides_simulator.html . Pick the student version because the teacher version has an annoying note in the middle of the simulation screen—the teacher version will not give you any more information than the student version to answer these questions. Click on the tide simulator. Click the box to turn on spring/neap ...
In this presentation, one will find more elaborative and detailed information on the topic of TIDES with full depth knowledge about its various aspects including the forces that act on it, how & when they act on it with illustrative images.
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. What are the 2 tides types?
Rather, the term is derived from the concept of the tide "springing forth." Spring tides occur twice each lunar month all year long without regard to the season. Neap tides, which also occur twice a month, happen when the sun and moon are at right angles to each other.
How to Create Map Views in the Odoo 17 ERPCeline George
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The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
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Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
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This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
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Impact of Ethnobotany in traditional medicine,
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Bio-prospecting tools for drug discovery,
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9. Tide Table
Puerto Galera, Philippines
Thu 6 Sep
HW LW HW LW
01:17 08:00 14:05 18:45
1.0 m 0.2 m 0.5 m 0.3 m
Wed 12 Sep
HW LW HW
06:37 15:35 23:06
1.0 m 0.1 m 0.6 m
12. Tides
• Tides are caused by slight variations in gravitational
attraction between the Earth, the moon and the sun in
geometric relationship with locations on the Earth's
surface.
• Tides are periodic primarily because of the cyclical
influence of the Earth's rotation.
• Tide- EoE
13. Tides
• Basically, tides are very long-period waves that move through the
oceans in response to the forces exerted by the moon and sun.
• Tides originate in the oceans and progress toward the coastlines
where they appear as the regular rise and fall of the sea surface.
• When the highest part, or crest of the wave reaches a particular
location, high tide occurs; low tide corresponds to the lowest part
of the wave, or its trough. The difference in height between the
high tide and the low tide is called the tidal range.
• http://oceanservice.noaa.gov/education/tutorial_tides/tides01_intr
o.html
NOAA
14. Tides
• Gravity is one major force that creates tides.
In 1687, Sir Isaac Newton explained that
ocean tides result from the gravitational
attraction of the sun and moon on the oceans
of the earth
15. Brief Review of Gravity
• Newton’s law of universal gravitation states
that the gravitational attraction between two
bodies is directly proportional to their
masses, and inversely proportional to the
square of the distance between the bodies
16. Brief Review of Gravity
• F = G(mass1*mass2)/D2
• F - gravitational force between 2 bodies
• G – gravitational constant
• mass1 – mass of the first object
• mass2– mass of the second object
• D – distance between the two objects
17. Causes of Tides
• The Sun is 27 million times larger than the
Moon
• The Sun is 390 times farther from the Earth
than the Moon
• Thus, the Moon has twice the tide generating
force as the Sun
18.
19. Causes of Tides
• The gravitational attraction between the Earth and the
moon is strongest on the side of the Earth that
happens to be facing the moon, simply because it is
closer.
• This attraction causes the water on this “near side” of
Earth to be pulled toward the moon.
• As gravitational force acts to draw the water closer to
the moon, inertia attempts to keep the water in place.
– But the gravitational force exceeds it and the water is
pulled toward the moon, causing a “bulge” of water on the
near side toward the moon
21. Causes of Tides
• The sun also plays a major role, affecting the
size and position of the two tidal bulges. The
interaction of the forces generated by the
moon and the sun can be quite complex.
• Over time, the positions of the Sun and Moon
change relative to the Earth’s equator. The
changes in their relative positions have a
direct effect on daily tidal heights and tidal
current intensity.
22. Causes of Tides
• As the moon revolves around the Earth, its
angle increases and decreases in relation to
the equator.
– This is known as its declination.
• The two tidal bulges track the changes in lunar
declination, also increasing or decreasing their
angles to the equator.
• http://oceanservice.noaa.gov/education/tutor
ial_tides/media/tide04_400.gif
23. Causes of Tides
• Similarly, the sun’s relative position to the equator
changes over the course of a year as the Earth rotates
around it. The sun’s declination affects the seasons as
well as the tides.
• During the vernal and autumnal equinoxes—March 21
and September 23, respectively—the sun is at its
minimum declination because it is positioned directly
above the equator.
• On June 21 and December 22—the summer and winter
solstices, respectively—the sun is at its maximum
declination, i.e., its largest angle to the equator
24. Causes of Tides
• Most coastal areas, with some exceptions, experience
two high tides and two low tides every lunar day
• Similarly, a lunar day is the time it takes for a specific
site on the Earth to rotate from an exact point under
the moon to the same point under the moon.
– Unlike a solar day, however, a lunar day is 24 hours and 50
minutes.
– The lunar day is 50 minutes longer than a solar day
because the moon revolves around the Earth in the same
direction that the Earth rotates around its axis. So, it takes
the Earth an extra 50 minutes to “catch up” to the moon
25. Causes of Tides
• http://oceanservice.noaa.gov/education/tutorial
_tides/media/tide05a_300.gif
• Since the Earth rotates through two tidal “bulges”
every lunar day, we experience two high and two
low tides every 24 hours and 50 minutes.
Here, we see the relationship between the tidal
cycle and the lunar day. High tides occur 12 hours
and 25 minutes apart, taking six hours and 12.5
minutes for the water at the shore to go from
high to low, and then from low to high.
26. Causes of Tides
• The moon is a major influence on the Earth’s
tides, but the sun also generates considerable
tidal forces.
• Solar tides are about half as large as lunar
tides and are expressed as a variation of lunar
tidal patterns, not as a separate set of tides
28. Causes of Tides
• When the sun, moon, and Earth are in alignment
(at the time of the new or full moon), the solar
tide has an additive effect on the lunar
tide, creating extra-high high tides, and very
low, low tides—both commonly called spring
tides.
• One week later, when the sun and moon are at
right angles to each other, the solar tide partially
cancels out the lunar tide and produces moderate
tides known as neap tides.
• During each lunar month, two sets of spring tides
and two sets of neap tides occur
29. Causes of Tides
• http://oceanservice.noaa.gov/education/tutor
ial_tides/media/tide06a_450.gif
30. Causes of Tides
• Just as the angles of the sun, moon and Earth
affect tidal heights over the course of a lunar
month, so do their distances to one another.
• Because the moon follows an elliptical path
around the Earth, the distance between them
varies by about 31,000 miles over the course
of a month
32. Causes of Tides
• . Once a month, when the moon is closest to
the Earth (at perigee), tide-generating forces
are higher than usual, producing above-
average ranges in the tides.
• About two weeks later, when the moon is
farthest from the Earth (at apogee), the lunar
tide-raising force is smaller, and the tidal
ranges are less than average
33. Causes of Tides
• A similar situation occurs between the Earth
and the sun. When the Earth is closest to the
sun (perihelion), which occurs about January 2
of each calendar year, the tidal ranges are
enhanced. When the Earth is furthest from
the sun (aphelion), around July 2, the tidal
ranges are reduced