What are some experiences you have had with waves?

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Ocean Waves and Tides.

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Presentation transcript:

What are some experiences you have had with waves? Bell Ringer Question 12/13/11 What are some experiences you have had with waves?

Learning Targets 1). You must understand what produces ocean waves. 2). You need to understand that waves pass energy not water. 3). You must understand and be able to explain how tides form. 4). You need to be able to explain what causes high and low tides.

Wave Properties What Is a Wave? Characteristics Rhythmic movement that carries energy In the ocean, waves are generated by wind moving over the water’s surface. Crest: Highest Point Trough: Lowest Point Wavelength: Distance from crest to crest or trough to trough.

Weird Waves How Waves Work Important Ideas Waves Pass on Energy http://www.onr.navy.mil/focus/ocean/images/motion/ani_waves.gif How Waves Work Important Ideas Waves Pass on Energy Water moves up and down but it will return to its original position. http://www.youtube.com/watch?v=TiIrkyRx3ms Energy moves forward Water Does NOT move Forward DEMO.

Come up with a memory clue for wave, crest, and trough. Reflection Break Come up with a memory clue for wave, crest, and trough.

Tides Change From Place to Place What is a Tide? Tides Change From Place to Place Periodic Rise and Fall in Sea Level (Sea Level: height of ocean) High Tide Highest Water ever rises Low Tide Lowest level of water

Cause of Tides What causes Tides? Gravitational Attraction between the Earth, Moon, and Sun. Gravitational Attraction decreases with distance. Force pulling the water towards the Moon or Sun.

Lunar Tide Solar Tide Caused by the Moon More intense because the moon is closer to the Earth Gravitational Pull is more intense Caused by Sun Less intense Sun is farther away from the Earth Combined These Tides Can Be Extreme

Tides Video If the Sun and Moon are in a straight line and pulling on the Earth = High Tides If the Sun and Moon are not in a straight line = low tides http://www.youtube.com/watch?v=kHvBUDk7kkQ Combined Effects = High Tides

Come up with a memory clue for Tides, Lunar Tide, and Solar Tide. Reflection Time Come up with a memory clue for Tides, Lunar Tide, and Solar Tide.

On Your Notes… Write Down the Chapter You Feel the Most Confident About Going Into Your Final

Now… Write Down What Chapter You Feel The Least Confident about Going Into Your Final.