1.Gravitational pull of the moon and sun 2.Centripetal force of the rotating Earth Tides are generated by:

Slides:

Advertisements

Similar presentations

Advertisements

© 2011 Pearson Education, Inc. CHAPTER 9 Tides. © 2011 Pearson Education, Inc. Chapter Overview Tides are the rhythmic rise and fall of sea level. Tides.

© 2011 Pearson Education, Inc. CHAPTER 9 Tides. © 2011 Pearson Education, Inc. What are Tides? Tides – periodic raising and lowering of ocean sea level.

Tides are generated by: the gravitational pull of the moon and sun - moon has 2x greater gravitational pull than the sun - sun is 10 million x more massive.

Unit 8 - Tides.

© 2011 Pearson Education, Inc. CHAPTER 9 Tides. © 2011 Pearson Education, Inc. Tidal Range Spring Tides Largest Tidal Range Full and New Moon Neap Tides.

Earth Science: 16.2B Tides Tides.

Lesson 10: Tides Physical Oceanography

Essentials of Oceanography 7th Edition

Chapter 10: Tides Fig Fig

Essentials of Oceanography

TIDES. What is a tide? A tide is the periodic rise and fall of a body of water due to gravitational interactions between the sun, moon and Earth The wavelength.

TIDES. Tides The periodic short term changes in the height (rise or fall) of the ocean surface at a particular place Caused by a combination of –Distance.

Physics 003b. Seawater Physics Temperature Light Sound Buoyancy Dissolved gasses Waves Tides.

Moon & Tides By Diana L. Duckworth Rustburg High School Campbell County, VA.

TIDES Chapter A tide has a waveform. - Shallow water wave (large L compared to water depth). -Crest of wave is high tide. -Trough.

Ocean Waves Capillary Gravity Wind generated Tides Tsunamis Seiches.

Our Planet Earth Seasons, Moon Phases and Ocean Tides The Earth, Moon and Sun System.

Tides. What are they: Tides are daily changes in level of ocean surface. Discovered by Sir Isaac Newton. Causes: Gravitational pull of the moon and sun.

Tides!!!!!!!!!!!. Tides Periodic, short-term changes in ocean height Periodic, short-term changes in ocean height.

The Tides Chapter 11. Tidal Range Tide Patterns Diurnal tide T = 1 day One high and one low per day.

Tides Cause Tides- daily variations in sea level

Solar and Lunar Eclipses Eclipses. Solar Eclipse During a solar eclipse, the moon blocks our view of the Sun. It only happens during a new moon. The shadow.

TIDES. Tides  Tides are long period waves that move in the ocean in response to the gravitational force of the sun and the moon.  Tides originate in.

Chapter 9: Tides Physical Oceanography. Last chapter you learned about waves How do you differentiate between a deep-water and shallow-water wave? What.

Tides. Tides are the rhythmic rise and fall of the ocean’s water at a fixed location Tides are extremely large waves –High tide is the crest of the wave.

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

The word "tides" is a generic term used to define the alternating rise and fall in sea level with respect to the land, produced by the gravitational attraction.

*Refer to Chapter 12 in your Textbook. Learning Goals: 1. I can explain how tidal waves are generated. 2. I can differentiate between the various types.

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

High or Low - What Causes Tides?. Last lesson we learned about waves How do you differentiate between a deepwater and shallow-water wave? What is the.

Tides Oceans 11. What causes tides? Winds and currents move the surface water causing waves. Winds and currents move the surface water causing waves.

Tides. Cyclical rise and fall of the oceans in response to the forces exerted by the moon and sun. Cyclical rise and fall of the oceans in response to.

TIDES Chapter 10. Study Plan Tides are the longest of all Ocean Waves Tides are the longest of all Ocean Waves Tides are forced waves formed.

Tides. Bay of Fundy ► Boats can only travel at higher tides ► Some of the highest tides in the world.

TIDES AND THE MOON. Check out this Website! Watch the video below to help explain tides and the moon! Moon and Tides video:

Ch Tides. Why tides occur Refers to cyclic rise and fall of sea water. Refers to cyclic rise and fall of sea water. Variations in gravitational.

Tides. What causes tides? Tides are created by the imbalance between two forces: 1. Gravitational force of the Moon and Sun on Earth If mass increases.

Tides Physical Oceanography

Waves and Water Dynamics

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

Tides Tides are the daily change in sea level of the ocean.

Tides Periodic rising and falling of ocean waters caused by the gravitational pull of the sun, moon & Earth. Also affected by: Shape and depth of ocean.

Tides 1. What are tides? 2. What force(s) drive the tides?

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

Tides Tides are daily changes in the elevation of the ocean surface (sea level) Ocean tides result from the gravitational attraction exerted upon Earth.

Tides Tide- the rise and fall in sea level is called.

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

Tides Gravity- pull or attraction between objects; varies with mass of object Centrifugal force- because the earth and moon are rotating simultaneously.

Ocean Waves and Tides Ocean Tides.

Biggest ocean waves of all

16.2: Waves and Tides.

A Rising tide lifts all boats

Lesson 4.2: Tides *Refer to Chapter 12 in your Textbook.

Lesson 10: Tides Physical Oceanography

Tides Periodic rising and falling of ocean waters caused by the gravitational pull of the sun, moon & Earth. Also affected by: Shape and depth of ocean.

Lesson 10: Tides Physical Oceanography

Tides Science 8.

Tides Tides are daily changes in the elevation of the ocean surface (sea level) Ocean tides result from the gravitational attraction exerted upon Earth.

Presentation transcript:

1.Gravitational pull of the moon and sun 2.Centripetal force of the rotating Earth Tides are generated by:

the gravitational pull of the moon and sun - moon has 2x greater gravitational pull than the sun - sun is 10 million x more massive than the moon and is 390 times farther away

Centripetal force

CENTRIPETAL GRAVITATIONAL FORCE GRAVITATIONAL & CENTRIPETAL

Diurnal Tide: 24 hr 50 min cycle Semi Diurnal Tide: 12 hr 25 min cycle Mixed Tide: 12 hr 25 min cycle Tidal Cycles

High water: a water level maximum ("high tide") Low water: a water level minimum ("low tide") Tidal range: the difference between high and low tide Spring Tide: full moon and new moon (14.77 days) Neap Tide: 1 st quarter and 3 rd quarter (14.77 days) Description of tides Intertidal zone High tide Low tide

The monthly tidal cycle (29½ days) About every 7 days, Earth alternates between: –Spring tide Alignment of Earth-Moon-Sun system (syzygy) Lunar and solar bulges constructively interfere Large tidal range –Neap tide Earth-Moon-Sun system at right angles (quadrature) Lunar and solar bulges destructively interfere Small tidal range

Earth-Moon-Sun positions and the monthly tidal cycle Spring Tide Highest high tide and lowest low tide Neap Tide Moderate tidal range

Tidal Patterns Semidiurnal tides- two high and two low per day; Cape Cod, MA (high latitudes) Diurnal tides- one high and one low per day; Mobile, AL (low latitudes) Mixed pattern tides- Two high and two low tides per day BUT with successive high tide levels that are VERY DIFFERENT from each other; Hawaii (mid latitudes) Type of tide depends on: Position on the globe Water depth Contour- shape of ocean basins

Location of Tide Types World Map

The Bay of Fundy: Site of the world’s largest tidal range

Alma at High Tide Alma at Low Tide Bay of Fundy

La Rance tidal power plant at St. Malo, France.

Tidal bore = a true tidal wave Wall of water that moves upriver Caused by an incoming high tide Occurs in some low-lying rivers Can be large enough to surf or raft

Corals exposed to air at extreme low tide

bio/mbweb.html Tidal Information HAWAIIAN ISLANDS Mean Spring Mean Tide Station Latitude Longitude Range Range Level Predictions SAND ISLAND, MIDWAY ISLANDS 28° 12.7' 177° 21.6' PredictionsPredictions Laysan Island 25° 46' 171° 45' PredictionsPredictions East Island, French Frigate Shoals 23° 47' 166° 13' PredictionsPredictions Nonopapa, Niihau Island 21° 52' 160° 14' PredictionsPredictions Kauai Island Waimea Bay 21° 57' 159° 40' PredictionsPredictions Port Allen, Hanapepe Bay 21° 54' 159° 35' PredictionsPredictions NAWILIWILI 21° 57.4' 159° 21.6' PredictionsPredictions Hanamaulu Bay 22° 00' 159° 20' PredictionsPredictions Hanalei Bay 22° 13' 159° 30' PredictionsPredictions Oahu Island Haleiwa, Waialua Bay 21° 36' 158° 07' PredictionsPredictions Waianae 21° 27' 158° 12' PredictionsPredictions HONOLULU 21° 18' 157° 52' PredictionsPredictions Hanauma Bay 21° 17' 157° 42' PredictionsPredictions Waimanalo 21° 20' 157° 42' PredictionsPredictions MOKUOLOE 21° 26.2' 157° 47.6' PredictionsPredictions Waikane, Kaneohe Bay 21° 30' 157° 51' PredictionsPredictions

Inquiry 1.Which has the greatest tidal effect– sun or moon? 2.Where is the greatest tidal range located? 3.Which lunar phase produces moderate tides? 4.How is a tidal bore created?