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

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Presentation transcript:

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

Lesson 4.2 Learning Targets: Explain how tidal waves are generated. Differentiate between the various types of tides. Describe an intertidal habitat.

Tidal Generated Waves: The gravitational pull from the Sun and Moon causes high and low tides Moon has a greater influence because it is closer to Earth

Tides Differ Around the World: One high tide and one low tide each day = Diurnal Two two high tides and two low tides each day = Semi-diurnal

Spring and Neap Tides: Spring Tides: occur when the Sun, Moon, and Earth are in a straight line Occurs at new and full moons Have the greatest effect on tides Neap Tides: occur when the Sun, Moon, and Earth make a right angle Occurs at 1st and 3rd quarter moons

Spring and Neap Tides:

Extreme Tides: Bay of Fundy- Nova Scotia, Canada Largest tidal range in the world Approximately 48-55 ft (FL is about 4 ft)

Tidal Bores: Occur when incoming tides produce a wave that flows into a narrow area (river, bay) Only occur in a few places around the world

Intertidal Habitat: “Tide Pools” Covered with water during high tide, and exposed to air during low tide Must adapt to harsh conditions like waves & drying out